All Wiring Diagrams for Chevrolet Express LT 2014 1500 model

AIR CONDITIONING

Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Express LT 2014 1500

List of elements for Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Express LT 2014 1500:

(behind right kick panel) g304
(behind right side of dash, on hvac) air temperature actuator
A/c
Bi-lev
Blower motor (on right rear of engine compt, on evaporator case)
Blower motor relay
Blower motor resistor assembly (at right rear of engine compt, on evaporator case)
Def
Defogger control ind
Defogger switch
Defogger system
Evaporative emission system leak detection pump (6.6l)
F2 x1
Floor
Front auxiliary hvac control assembly
Frt blwr fuse 74 40a
G102 (6.6l: left front lower side of engine block) (4.8l, 5.3l & 6.0l: on left rear of engine) (4.3l: right rear of engine)
G102 (left front lower side of engine block)
G348
Hot at all times
Hot w/ run relay k1 energized
Hvac 1 fuse 14 20a
Hvac 2 fuse 13 10a
Hvac cntrl fuse 25 10a
Hvac control switch assembly
Interior lights system
J102
J249
J314
Logic
Max a/c
Med
Mix-blend
Off
Passenger compartment fuse block
Rear blwr fuse 29 30a
Red
Splice block jx348 (attached to lower right "b" pillar part of g348)
Tan
Underhood fuse block (on left side of engine compt)
Vent
W/ electric rear window defogger & power mirrors
X100
X205
X407
X409

Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Express LT 2014 1500

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List of elements for Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Express LT 2014 1500:

(attached to left inner frame rail, near fuel pump assembly) coolant heater fuel pump
(behind left kick panel) g302
(right front of engine compt, attached to bottom of coolant surge tank) (6.6l) engine coolant level switch
(w/o rv upfitter: in body harness, 31 cm from x304 breakout) (w/ rv upfitter: in body harness, 32 cm from x308 breakout)
5v ref
A/c low pressure switch (on side of accumulator)
Auxiliary air temperature actuator (on auxiliary hvac assembly)
Auxiliary blower motor (on auxiliary hvac)
Auxiliary blower motor high speed relay (left rear of passenger compt, attached to hvac module)
Auxiliary blower motor low speed relay (left rear of passenger compt, attached to auxiliary hvac module)
Auxiliary blower motor medium speed relay (left rear of passenger compt, attached to auxiliary hvac module)
Auxiliary blower motor resistor (on auxiliary heater motor)
Auxiliary mode door actuator
Batt +
Computer data lines system
Coolant heater (6.6l w/ auxiliary fuel fired heater) (attached to left front inner frame rail)
Coolant heater air temperature sensor
Coolant heater blower motor
Coolant heater combustion sensor
Coolant heater control module
Coolant heater glow plug
Coolant heater overheat temperature sensor
Coolant heater temperature sensor
Coolant level sw sig
Driver information center (dic) display
Engine coolant temperature gauge
Foh mdl fuse 15a
Fuel pump
G400 (on inner left rear frame rail)
G402 (on top of left "d" pillar)
Gnd
Hot at all times
Instrument panel cluster (ipc)
J244
J308 (w/o rv upfitter: in body harness, 5 cm from x304 breakout) (w/ rv upfitter: in body harness, 22 cm from x308 breakout)
J310
J311 (w/o rv upfitter: in body harness, 41 cm from x304 breakout) (w/ rv upfitter: in body harness, 22 cm from x308 breakout)
J402
J405
J411
J412
J413 (in rear hvac harness, 24 cm from auxiliary blower motor breakout)
Logic
Low ref
Low spd gmlan serial data
Provisional
Serial +
Serial -
Serial data
Tan
Underhood fuse block (on left side of engine compt)
Volt
X100
X305
X319
X407

Manual A/C Wiring Diagram, Cargo Van (3 of 3) for Chevrolet Express LT 2014 1500

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List of elements for Manual A/C Wiring Diagram, Cargo Van (3 of 3) for Chevrolet Express LT 2014 1500:

(4.3l: at left front of engine) (4.8l, 5.3l & 6.0l: at lower right front of engine) (6.6l: top front of engine) a/c compressor clutch
(engine chassis harness, 4 cm from engine control module (ecm) x1 breakout) j145
(in chassis harness, 15 cm from coolant heater breakout) j119
+ - gmlan data
12v ref
4.3l
4.8l, 5.3l & 6.0l
5v ref
5v ref 1
6.6l
A/c cmprsr fuse 18 15a
A/c compressor clutch relay 40
A/c refrigerant pressure sensor
A/c request sig
Body control module (bcm) (behind lower right side of dash)
Clutch rly ctrl
Computer data lines system
Cooling fan assembly (6.6l) (behind radiator)
Ctrl spd sig
Electronic brake control module (ebcm) (on left frame rail, near center of vehicle)
Engine control module (ecm) (left side of engine compt)
Engine coolant temperature (ect) sensor (4.8l, 5.3l & 6.0l: at left front of engine) (4.3l: on left side of engine) (6.6l turbo: top of engine, near thermostat housing)
Except 6.6l
Fan cltch (ev) fuse 10a
G102 (6.6l: left front lower side of engine block) (4.8l, 5.3l & 6.0l: on left rear of engine) (4.3l: right rear of engine)
Gmlan (+)
Gmlan (-)
Hot at all times
Hot w/ pwr/trn relay 49 energized
J102
Low ref
Pnk
Press sens
Sens sig
Serial data
Speed sig
Tan
Underhood fuse block (on left side of engine compt)
W/ auxiliary fuel fired heater
W/o auxiliary fuel fired heater
X100
X101
X111
X142

Manual A/C Wiring Diagram, Passenger Van (1 of 3) for Chevrolet Express LT 2014 1500

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List of elements for Manual A/C Wiring Diagram, Passenger Van (1 of 3) for Chevrolet Express LT 2014 1500:

(19 cm from x303 breakout)
(39 cm from x303 breakout)
(64 cm from x303 breakout)
(behind right kick panel) g304
(behind right side of dash, on hvac) air temperature actuator
A/c
Auxiliary hvac control processor (w/ rv upfitter & swb passenger) (center front of headliner)
Bi-lev
Blower motor (on right rear of engine compt, on evaporator case)
Blower motor relay
Blower motor resistor assembly (at right rear of engine compt, on evaporator case)
Def
Defogger ind
Defogger switch
Defogger system
Evaporative emission system leak detection pump (6.6l)
F2 x1
Floor
Front auxiliary hvac control assembly
Frt aux mod sig
Frt blwr fuse 74 40a
Frt temp dual sig
G102 (6.6l: left front lower side of engine block) (4.8l, 5.3l & 6.0l: on left rear of engine) (4.3l: right rear of engine)
G102 (left front lower side of engine block)
G348
G401 (on top of right "d" pillar)
Gnd
Hot at all times
Hot w/ run relay k1 energized
Hvac 1 fuse 14 20a
Hvac 2 fuse 13 10a
Hvac cntrl fuse 25 10a
Hvac control switch assembly
Ign
Interior lights system
J102
J249
J305
J306
J307
J314
J330
J354
Logic
Max a/c
Med
Mix blend
Mix blend def
Off
Passenger compartment fuse block
Rear
Rear auxiliary hvac control assembly
Rear blwr fuse 29 30a
Red
Rr air temp mtr ctrl
Rr aux air mod sig
Rr aux air temp sig
Rr aux blwr mtr ctrl sw frt aux blwr mtr ctrl sw
Rr aux mod mtr sig
Splice block jx348 (attached to lower right "b" pillar part of g348)
Tan
Underhood fuse block (on left side of engine compt)
Vent
W/ electric rear window defogger & power mirrors
W/ rv upfitter
W/o rv upfitter
X100
X205
X206
X407
X409
X420

Manual A/C Wiring Diagram, Passenger Van (2 of 3) for Chevrolet Express LT 2014 1500

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List of elements for Manual A/C Wiring Diagram, Passenger Van (2 of 3) for Chevrolet Express LT 2014 1500:

(attached to left inner frame rail, near fuel pump assembly) coolant heater fuel pump
(behind left kick panel) g302
(right front of engine compt, attached to bottom of coolant surge tank) (6.6l) engine coolant level switch
(w/ rv upfitter: in body harness, 22 cm from x308 breakout)
(w/ rv upfitter: in body harness, 32 cm from x308 breakout)
5v ref
A/c low pressure switch (on side of accumulator)
Auxiliary air temperature actuator (on auxiliary hvac assembly)
Auxiliary blower motor (on auxiliary hvac)
Auxiliary blower motor high speed relay (left rear of passenger compt, attached to hvac module)
Auxiliary blower motor low speed relay (left rear of passenger compt, attached to auxiliary hvac module)
Auxiliary blower motor medium speed relay (left rear of passenger compt, attached to auxiliary hvac module)
Auxiliary blower motor resistor assembly (on auxiliary heater motor)
Auxiliary mode door actuator
Batt +
Computer data lines system
Coolant heater (6.6l w/ auxiliary fuel fired heater) (attached to left front inner frame rail)
Coolant heater air temperature sensor
Coolant heater blower motor
Coolant heater combustion sensor
Coolant heater control module
Coolant heater glow plug
Coolant heater overheat temperature sensor
Coolant heater temperature sensor
Coolant level sw sig
Driver information center (dic) display
Engine coolant temperature gauge
Foh mdl fuse 15a
Fuel pump
G400 (on inner left rear frame rail)
G402 (on top of
Gnd
Hot at all times
Instrument panel cluster (ipc)
J244
J308 (w/o rv upfitter: in body harness, 5 cm from x304 breakout) (w/ rv upfitter: in body harness, 22 cm from x308 breakout)
J310
J311
J402
J405
J411
J412
J413 (in rear hvac harness, 24 cm from auxiliary blower motor breakout)
Left "d" pillar)
Logic
Low ref
Low spd gmlan serial data
Provisional
Serial +
Serial -
Serial data
Tan
Underhood fuse block (on left side of engine compt)
Volt
X100
X205
X305
X319
X407

Manual A/C Wiring Diagram, Passenger Van (3 of 3) for Chevrolet Express LT 2014 1500

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List of elements for Manual A/C Wiring Diagram, Passenger Van (3 of 3) for Chevrolet Express LT 2014 1500:

(4.3l: at left front of engine) (4.8l, 5.3l & 6.0l: at lower right front of engine) (6.6l: top front of engine) a/c compressor clutch
(engine chassis harness, 4 cm from engine control module (ecm) x1 breakout) j145
(in chassis harness, 15 cm from coolant heater breakout) j119
+ gmlan data
12v ref
4.3l
4.8l, 5.3l & 6.0l
5v ref
5v ref 1
6.6l
A/c cmprsr fuse 18 15a
A/c compressor clutch relay 40
A/c refrigerant pressure sensor
A/c request sig
Body control module (bcm) (behind lower right side of dash)
Clutch rly ctrl
Computer data lines system
Cooling fan assembly (6.6l) (behind radiator)
Ctrl spd sig
Electronic brake control module (ebcm) (on left frame rail, near center of vehicle)
Engine control module (ecm) (left side of engine compt)
Engine coolant temperature (ect) sensor (4.8l, 5.3l & 6.0l: at left front of engine) (4.3l: on left side of engine) (6.6l: top of engine, near thermostat housing)
Except 6.6l
Fan cltch (ev) fuse 10a
G102 (6.6l: left front lower side of engine block) (4.8l, 5.3l & 6.0l: on left rear of engine) (4.3l: right rear of engine)
Gmlan (+)
Gmlan (-)
Hot at all times
Hot w/ pwr/trn relay 49 energized
J102
Low ref
Pnk
Press sens
Sens sig
Serial data
Speed sig
Tan
Underhood fuse block (on left side of engine compt)
W/ auxiliary fuel fired heater
W/o auxiliary fuel fired heater
X100
X101
X111
X142

Rear A/C Wiring Diagram, Provisions for Chevrolet Express LT 2014 1500

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List of elements for Rear A/C Wiring Diagram, Provisions for Chevrolet Express LT 2014 1500:

(behind lower right side of dash) body control module (bcm)
Dimming ctrl
G347
Harness, 5 cm from air temperature actuator connector breakout) j250
Hot at all times
Hot w/ run relay k1 energized
Hvac 2 fuse 13 10a
J356 (in body harness, 20 cm from underhood fuse block breakout)
Passenger compartment fuse block
Provisional
Rear blwr fuse 29 30a
Splice block jx347 (in body harness, attached to lower left "b" pillar)
X319
X407
X409

Anti lock Brakes Wiring Diagram with JL4 1 of 2 for Chevrolet Express LT 2014 1500

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12v ref
4.3l
5.3l, 4.8l & 6.0l
5v ref
6.6l
Abs mdl fuse 2 40a
Abs mtr fuse 1 50a
Brk sw fuse 13 10a
Can bus hi
Can bus hi data
Can bus lo
Can bus lo data
Computer data lines system
Electronic brake control module (ebcm) (on left frame rail, near center of vehicle)
Engine control module (ecm) (left side of engine compt)
Except 6.6l
G300 (on left frame rail, near ebcm)
Gnd
Hi spd gmlan data +
Hi spd gmlan data-
Hot at all times
Hot w/ run/crnk relay 15 energized
Ipc fuse 10 10a
J103
J315
Left front wheel speed sensor (wss) (on inside of left front wheel)
Left rear wheel speed sensor (wss) (at left rear wheel hub)
Lf wheel spd sens
Lo ref
Low ref
Lr wheel speed sens
Multi-axis acceleration sensor (on floor between front seats)
Pnk
Radio
Red
Rf wheel spd sens
Right front wheel speed sensor (wss) (on inside of right front wheel)
Rr wheel speed sens
Serial data enable
Spd sig vehicle
Steering angle sens
Steering phase a
Steering phase c
Steering sens sig
Stop lamp switch (behind left side of dash, above brake pedal)
Str/whl snsr fuse 29 10a
Tan
Underhood fuse block (on left side of engine compt)
Vehicle spd sig
Vehicle speed signal
X100
X101
X105
X107 c5
X200
X221
X318
X413

Anti lock Brakes Wiring Diagram with JL4 2 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
A12
A14
A16
Abs ind
Body control module (bcm) (behind lower right side of dash)
Brake booster fluid flow alarm switch (in power steering pump outlet hose)
Brake booster fluid pressure alarm switch (w/ brake warning indicate system) (in power steering pump inlet hose)
Brake fluid level switch (at left rear of engine compt)
Brake ind
Brake pressure differential switch (on brake valve, near front of ebcm)
Brake warning indicator ctrl
Brk fluid level sensor sig
Computer data lines system
Dimming ctrl
E10
Exterior lights system
G103 (4.3l: left rear of engine) (4.8l, 5.3l & 6.0l: on right rear of engine) (6.6l: left front lower side of engine block)
G300 (on left frame rail, near ebcm)
G302 (behind left kick panel)
Gnd
Heavy duty
Ign volt
Instrument panel cluster (ipc)
Interior lights system
J101
J202
J231 (in instrument panel harness, 5 cm from x200 breakout towards instrument panel cluster)
J244
J248
J250 (in dash harness, 5 cm from air temperature actuator connector breakout)
J315
Light duty
Lo spd gmlan
Logic
Low stability ind
Park brake switch (under left side of dash)
Pnk
Prk brk sw
Right rear wheel speed sensor (wss) (at right rear wheel hub)
Serial data
Steering sens a
Steering sens b
Steering sens c
Steering wheel speed/ position sensor (at base of steering column)
Tan
Tcc brake sig
Traction control switch
Traction sw
Vdc ind
X100
X101
X141
X200
X220
X414

Anti lock Brakes Wiring Diagram without JL4 for Chevrolet Express LT 2014 1500

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(on left frame rail, near ebcm) g300
4.3l
5.3l, 4.8l & 6.0l
6.6l
Abs ind
Abs mdl fuse 2 40a
Abs mtr fuse 1 50a
Body control module (bcm) (behind lower right side of dash)
Brake booster fluid flow alarm switch (in power steering pump outlet hose)
Brake booster fluid pressure alarm switch (w/ brake warning indicate system) (in power steering pump inlet hose)
Brake fluid level switch (at left rear of engine compt)
Brake ind
Brake pressure differential switch (on brake valve, near front of ebcm)
Brake warning indicator ctrl
Brk fluid level sensor sig
Brk sw fuse 13 10a
Computer data lines system
Electronic brake control module (ebcm) (on left frame rail, near center of vehicle)
Engine control module (ecm) (left side of engine compt)
Except 6.6l
Exterior lights system
G103 (4.3l: left rear of engine) (4.8l, 5.3l & 6.0l: on right rear of engine) (6.6l: left front lower side of engine block)
G300 (on left frame rail, near ebcm)
G302 (behind left kick panel)
Gnd
Heavy duty
Hi spd gmlan bus +
Hi spd gmlan bus -
Hot at all times
Hot w/ run/crnk relay 15 energized
Instrument panel cluster (ipc)
Ipc fuse 10 10a
J101
J231 (in instrument panel harness, 5 cm from x200 breakout towards instrument panel cluster)
J244
J315
Left front wheel speed sensor (wss) (on inside of left front wheel)
Lf wheel speed sens
Light duty
Lo spd gmlan
Logic
Low ref
Park brake switch (under left side of dash)
Pnk
Prk brk sw
Rf wheel spd sens
Right front wheel speed sensor (wss) (on inside of right front wheel)
Serial data enable
Stop lamp switch (behind left side of dash, above brake pedal)
Tan
Tcc brake sig
Underhood fuse block (on left side of engine compt)
Vehicle spd sig
Vehicle speed signal
X100
X101
X107
X141
X220
X221

Forced Entry Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Cargo door unlock relay
Cargo dr unlck fuse 33 15a
Chime module (behind left center of dash)
Closed sw sig
Computer data lines system
Door lock relay
Door unlock relay
Driv door lock rly
Driv door lock sig
Driv door unlock sig
Driver door unlatch relay
Dvr dr unlck fuse 36 15a
Frt dr lck fuse 31 15a
Frt pass dr unlck fuse 34 15a
G100 (on left front of engine compt)
G302 (behind left kick panel)
G347
G348
Ground
Hood ajar switch (w/ remote engine start)
Hot at all times
J100
J247
J248
Left rear side door jam switch (w/ hinged door) (at left "b" pillar)
Lf door ajar sw
Lf door open sw
Liftgate ajar sw sig
Lo spd
Lo spd gmlan serial data x3
Lr door open sw
Mega fuse 125a
Nca
Pass door lock sw
Radio
Rear dr lck fuse 32 15a
Rear open sw
Rear pass dr unlck fuse 35 15a
Remote control door lock receiver (rcdlr) (behind center of dash)
Rf door ajar sw
Rf door open sw
Rfa/tpm fuse 21 10a
Right rear side door jam switch (w/ cargo passenger) (at right "b" pillar)
Rr door open sw
Serial data
Serial data bus +
Serial data bus -
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Sw sig
Tan
Underhood fuse block (on left side of engine compt)
W/ commercial tradesman
W/ hinged door
W/o commercial tradesman
X150
X318

Forced Entry Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(in body harness, 40 cm from x306 breakout)
(in body harness, near front passenger seat, 20 cm from x306)
(in right front door harness, 5 cm from passenger outside rearview mirror breakout)
A11
B11
C10
C11
C12
Cargo door latch assembly (w/ cargo/passenger) (in right rear cargo door)
Cargo/ passenger
Computer data lines system
Cutaway
Driver door latch assembly (at rear of driver door)
Driver door lock switch
Driver information center (dic) display
G347
G348
G401 (on top of right "d" pillar)
Instrument cluster (ipc)
J322
J323
J501 (w/ electronic side door lock control)
J601 (w/ electronic side door lock control)
J901 (w/ electronic side door lock control) (in rear cargo door harness, 35 cm from x902)
Left body sliding door jamb contact plate (at left "b" pillar)
Left rear side door lock actuator (w/ left rear hinged side door & rear sliding side door) (rear of left door)
Logic
Low spd gmlan serial data
Passenger door latch assembly (at rear of front passenger door)
Passenger door lock switch
Rear cargo door lock switch
Right body sliding door jamb contact plate (at right "b" pillar)
Right rear side door lock actuator (w/ rear hinged side door & rear sliding side door) (hinged: at left side of right door)
Security indicator
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Tan
W/ hinged door
W/ hinged doors
W/ sliding doors
X318
X400
X500
X600

Pass Key Wiring Diagram for Chevrolet Express LT 2014 1500

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4.3l
4.8l, 5.3l & 6.0l
6.6l
Acc
Batt pos volt
Bcm 3 fuse 10a
Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Closed sw signal
Computer data lines system
Content theft deterrent control module (tdm) (in steering column, near ignition key cylinder housing)
Driver information center display
Engine control module
G100 (on left front of engine compt)
G302 (behind left kick panel)
Gnd
Hood ajar switch (w/ remote engine start)
Hot at all times
Hot w/ run/crank relay 15 energized
Ign sw (dlis)/pk3 fuse 22 2a
Ign volt
Ignition switch
Instrument cluster
Ipc fuse 10a
J100
J202
J203
J205
J244
Lo spd data
Lock
Logic
Nca
Pnk
Run
Security ind
Serial data +
Serial data -
Serial data bus +
Serial data bus -
Start
Sw signal
Tan
Underhood fuse block (on left side of engine compt)
X1 h7
X150
X200 b1
X3 a4

Body Control Modules Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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4.3l/5.3l
Accessory wakeup serial data
Anti-theft system
Backlight dimm ctrl
Batt pos volt
Bcm 1 fuse 59 10a
Bcm 2 fuse 58 10a
Bcm 3 fuse 26 10a
Bcm 4 fuse 9 10a
Bcm 5 fuse 7 10a
Bcm 6 fuse 72 10a
Body control module (bcm) (behind lower right side of dash)
Brake sw sense sig
Brk pos sense 5v ref
Brk pos sense low ref
Cargo lamp
Computer data lines system
Crtsy lp ctrl batt pos volt batt pos volt
Cruise control system
Cruise ctrl dimm sig
Dimm sw sig
Dimm volt ref
Exterior lights system
Fl dome rel ctrl
Front pass dr lk sw ctrl
G103 (4.3l: left rear of engine) (5.3l: on right rear of engine)
G302 (behind left kick panel)
Gnd
Hdlp high beam rly ctrl
Hdlp low beam ctrl
Headlights system
High speed serial data bus (+)
High speed serial data bus (-)
Hood ajar sw sig
Hot at all times
Ign volt
Instrument cluster system
Interior lights system
J248
L trailer turn sig lamp
Local interconnect network 3
Low speed gmlan serial data
Power distribution system
R trailer turn sig lamp
Rf turn sig lamp ctrl
Run/crank rly coil ctrl
Serial data communication enable
Tan
Trunk release ctrl
Trunk, tailgate, fuel doors system
Underhood fuse block (on left side of engine compt)
W/ commercial tradesman sales package &
W/o commercial tradesman sales package &
Windshield washer rly ctrl
Wiper mtr park sw sig
Wiper/washer system

Body Control Modules Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(or 690)
12 volt ref
5v ref
A/c request signal
A/t shift lock ctrl
Acc
Air conditioning system
Alarm enable signal
Ambient light sens sig
Anti-lock brakes system
Anti-theft system
Backup lamp rly ctrl
Batt pos volt
Bcm 7 fuse 8 10a
Bkup lp sply volt
Body control module (bcm) (behind lower right side of dash)
Chmsl ctrl
Courtesy lamp ctrl
Courtesy lamps ctrl
Cruise control & sound systems
Cruise control system
Cruise ctrl sw sig
Current sens sig
Defeat sw sig
Dimm ctrl
Door locks & anti-theft systems
Drv door lock sw lock sig
Drv door lock sw unlock sig
Drv dr lock rly unlock ctrl
Exterior lights system
Flash to pass sw sig
Front wind wiper sw hi sig
Hdlp dimm low beam sig
Hdlp low beam rly ctrl
Hdlp off sig
Hdlp on sig
Headlights system
Hood cld sw sig
Horn rly ctrl
Horns system
Hot at all times
Ign volt
Ignition switch
Instrument cluster system
Interior lights system
J205
Key-in switch
L turn haz sw sig
Lf door ajar sw sig
Lf door open sw sig
Lf turn sig lamp ctrl
Liftgate ajar sw sig
Lo ref
Low ref
Lr door open sw sig
Lr turn sig lamp ctrl
Navigation system
Off
Park brake sw sig
Park lamp ctrl
Park lamps sig
Pass door lock sw lock ctrl
Pass dr lock sw unlock ctrl
Pnk
Power distribution system
R turn haz sw sig
Rear access open sw sig
Rf door ajar sw sig
Rf door open sw sig
Rr door open sw sig
Rr turn sig lamp ctrl
Run
Shift interlock system
Sound systems
Start
Starting/ charging system
Steering wheel ctrl sig
Stop lamps ctrl
Tan
Tap up/tap down sw sig
Tcc brake sig
Tow/haul switch signal
Traction ctrl sw sig
Transmissions system
Underhood fuse block (on left side of engine compt)
Washer switch signal
Wiper high sw sig
Wiper low sw sig
Wiper sw sig 2
Wiper/washer system
X200

Computer Data Lines Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
4.3l
4.8l, 5.3l & 6.0l
6.6l
Acc wake up serial data
B10
Chime module (behind left center of dash)
Content theft deterrent module (in steering column, near ignition key cylinder housing)
Cutaway
Data bus (+)
Data bus (-)
Data link connector (dlc) (under left side of dash)
Data link resistor
Data serial
Digital radio receiver (s-band digital audio system) (left side of dash)
E13
Engine control module (ecm) (left side of engine compt)
Hot at all times
Inflatable restraint front passenger presence system (pps) sensor (on passenger's seat harness, near breakout for seat adjuster switch)
Inflatable restraint sensing & diagnostic module (sdm) (under left front seat)
Inflatable restraint vehicle rollover sensor (if equipped) (front center floor board, between front seats)
Instrument cluster
J244
Jx250 (in dash harness, 20 cm from underhood pass through grommet)
Light duty w/o recreational vehicle, upfitter sales package
Ltr/dlc fuse 73 20a
Nitrogen oxides sensor 1 (top left rear side of engine)
Nitrogen oxides sensor 2 (middle of diesel particulate filter)
Radio
Rear parking assist control module (if equipped)
Reductant sensor module (above reductant tank)
Remote control door lock receiver (rcdlr) (if equipped) (behind center of dash)
Serial data
Splice pack jx200 (in dash wiring harness, 10 cm from underhood pass- through grommet breakout)
Tan
Underhood fuse block (on left side of engine compt)
W/ radio
W/ uys
W/o radio
W/o uys
X100
X101
X115
X200
X3 g1
X306
X318
X395

Computer Data Lines Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(6.6l)
(in engine harness, 15 cm from x101 breakout) j115
(left rear of engine) (6.6l) glow plug control module (gpcm)
4.3l & 5.3l
4.8l & 6.0l
5.3l
6.6l
Acc wake up serial data
Automatic transmission (6 speed a/t)
Body control module (bcm) (behind lower right side of dash)
Brake control
Comm
Control solenoid value assembly
Coolant heater (6.6l w/ fuel fired auxiliary heater) (attached to left inner frame rail, near fuel pump assembly)
Data bus (+)
Data bus (+) data bus (-) x2
Data bus (-)
Data bus (-) data bus (+)
Data comm
Data enable
Electronic brake control module (ebcm) (on left frame rail, near center of vehicle)
Enable
Except
Except 5.3l
Except 6.6l
Fuel pump flow control module (at rear of vehicle, attached to left rear frame rail)
Ign
J119 (w/ fuel fired auxiliary heater) (in chassis harness, 15 cm from coolant heater breakout)
J319 (in chassis harness, 7 cm from ecbm breakout)
Serial data
Tan
Transmission control module (tcm) (4 speed a/t) (left front corner of engine compt)
Vehicle communication interface module (vcm) (below steering column)
W/ active
W/ active brake control
W/ fuel fired auxiliary heater
W/ vehicle communication system
W/o active
W/o active brake control
W/o fuel fired auxiliary heater
W/o vehicle communication system
X100
X101
X101 d1
X105
X107
X174
X174 r

Cruise Control Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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(or pnk)
12v ref
4.3l
4.8l, 5.3l & 6.0l
5v ref 1
5v ref 2
6.6l
A13
A17
Accelerator pedal position (app) sensor (under left side of dash)
App sen 1 sig
App sen 2 sig
Batt +
Bcm 2 fuse 10a
Body control module (bcm) (behind lower right side of dash)
Brake low ref
Brake pedal position (bpp) sensor (top of brake pedal assembly)
Brake sens sig
Brake sig
Computer data lines system
Cruise control ind dimming sig
Cruise control switch signal
Cruise ind
Ecm batt fuse 10a
Engine control module (ecm)
Except 4.3l
G103 (4.3l: left rear of engine) (4.8l, 5.3l & 6.0l: on right rear of engine)
G109 (lower right front of engine)
G302 (behind left kick panel)
Gmlan ser data
Ground
Hi spd gmlan ser data bus(+)
Hi spd gmlan ser data bus(-)
Hot at all times
Hot w/ run/crank relay 15 energized
Ign
Inflatable restraint steering wheel module coil (at top of steering column)
Instrument panel cluster (ipc)
Ipc fuse 10a
J101
J160
J244
J248
Logic
Low ref
Pnk
Ser data bus(+)
Ser data bus(-)
Sply volt
Tac motor ctrl 1
Tac motor ctrl 2
Tan
Throttle body (except 6.6l) (4.8l, 5.3l & 6.0l: on left side of throttle body)
Tp sens 1 sig
Tp sens 2 sig
Underhood fuse block (on left side of engine compt)
X100
X103
X107
X200

Cruise Control Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(in steering wheel harness, near x200 connector)
(or pnk)
6.6l
Automatic transmission (6 speed a/t)
Automatic transmission assembly
Brake sig
Cancel
Computer data lines system
Control solenoid valve assembly
Cruise switch
Data bus +
Data bus -
Exterior lights system
Hot w/ run/crank relay 15 energized
Iss sig
J127
J135
J209
Left steering wheel control switch
Lo ref
Pnk
Red
Res+
Set-
Sound systems
Tan
Trans fuse 15a
Transmission control module (4 speed a/t)
Transmission control module (tcm)
Transmission input shaft speed (oss) sensor
Transmission input shaft speed sensor
Transmission output shaft speed (oss) sensor
Transmission output shaft speed sensor (right rear side of transmission)
Underhood fuse block (on left side of engine compt)
Vss high sig
Vss low sig
W/ radio redundant steering wheel control
W/o radio redundant steering wheel control
X100
X101
X174

Defoggers Wiring Diagram for Chevrolet Express LT 2014 1500

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(w/ rear window defogger & power mirrors) hvac control switch assembly
A x2
Defogger ind
Driver outside rearview mirror (in driver door)
G302 (behind left kick panel)
G304 (behind right kick panel)
G347
G348
G401 (on top of right "d" pillar)
G402 (on top of left "d" pillar)
Ground
Hot at all times
Hvac cntrl fuse 10a
Ign
J247
J249
J401
J500
J600
J902
Left rear defog- ger grid
Left rear defogger grid
Logic
Mega fuse 125a
Nca
Osrvm htr fuse 20a
Passenger compartment fuse block
Passenger outside rearview mirror (in right front passenger door)
Rear defog fuse 18 30a
Rear defog relay k5 (w/ electric rear window defogger & power mirrors)
Rear window defogger switch
Right rear defog- ger grid
Right rear defogger grid
Rr defog rly pwr
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Underhood fuse block (on left side of engine compt)
W/ stationary rear window door
W/ swing out rear window door
X1 a
X1 c4
X1 e2
X2 a
X3 d
X411 d
X411 e
X412 b
X500
X600
X901 a
X901 b
X902 a
X902 b

4 3L VIN X Engine Performance Wiring Diagram 1 of 3 for Chevrolet Express LT 2014 1500

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(behind lower right side of dash) body control module
(cutaway: in chassis harness, 87 cm from ebcm connector breakout) (passenger/cargo: in chassis harness, 44 cm from ebcm connector breakout)
(in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 2
(in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 2
5v ref 2
A/c refrigerant pressure sensor
Acc wak ser data
Accelerator pedal position (app) sensor (under left side of dash)
Air conditioning system
Anti-lock brakes system
App sens 2 sig
App sensor 1 sig
Batt pos volt
Brake lo ref
Brake pedal position (bpp) sensor (top of brake pedal assembly)
Brake sens sig
Brk sens sply
Clutch rly ctrl
Computer data lines system
Data serial gmlan lo spd
Driver information center display
Ecm batt fuse 19 10a
Ecm ign/ glow plug mdl ign fuse 30 15a
Engine control module (ecm)
Fuel lvl sens sig
Fuel pump & sender assembly (on fuel tank)
Fuel tank pressure (ftp) sensor (on fuel tank)
G400 (on inner left rear frame rail)
Gmlan ser data+
Gmlan ser data-
Ho2s hi sig
Ho2s lo ctrl
Ho2s lo sig
Hot at all times
Hot w/ run/ crnk relay 15 energized
Ign volt
Instrument cluster
J301
Logic
Low ref
Maf sens sig
Malfunction indicator lamp
Mil ctrl
Nca
Pnk
Pnk pnk
Press sens sig
Pressure ind low engine oil
Pump rly ctrl
Pwrtrn rly ctrl
Starter rly ctrl
Starting/ charging system
Tan
Tan c
Tos signal
Transmissions system
Underhood fuse block (on left side of engine compt)
Vss signal
X100
X101
X103

4 3L VIN X Engine Performance Wiring Diagram 2 of 3 for Chevrolet Express LT 2014 1500

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(in engine harness, 16 cm from underhood fuse block x1 breakout) j123
(on top of engine, near throttle body) evaporative emission (evap) canister purge solenoid
5v ref 1
Brk aply sens sig
Brk sw fuse 13 10a
Cnstr vent sol fuse 56 10a
Ecm pwr/trn fuse 78 10a
Engine control module (ecm)
Engine oil pressure (eop) sensor (on top rear of engine)
Evap sol ctrl
Evaporative emission (evap) canister vent solenoid valve (near front of fuel tank)
Exterior lights system
Fuel pump relay
G102 (right rear of engine)
G103 (left rear of engine)
Gas fuel pump fuse 24 30a
Hot at all times
Hot w/ run/ crnk relay 15 energized
Iat sens sig
Ign volt
J101
J102
J151
Maf/ cnstr vent fuse 64 15a
Manifold absolute pressure (map) sensor (attached to intake manifold tube)
Mass air flow (maf)/intake air temperature (iat) sensor (attached to air intake duct)
O2 snsr 1 (pre)/cls fuse 77 10a
O2 snsr 2 (post) fuse 62 10a
Odd ign/inj fuse 65 20a
Park/neutral sig
Pnk
Pwr/trn relay 49
Stop lamp switch (behind left side of dash, above brake pedal)
Tan
Tcc brake sig
Transmissions system
Underhood fuse block (on left side of engine compt)
V6 fuel inj fuse 75 15a
X100
X101
X221

4 3L VIN X Engine Performance Wiring Diagram 3 of 3 for Chevrolet Express LT 2014 1500

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(at top of engine) central sequential fuel injection (central sfi)
(inside intake manifold at cylinder) fuel injectors
5v ref 1
5v ref 2
Camshaft position (cmp) sensor (part of distributor, top rear of engine)
Ckp sens sig
Cmp sens sig
Crankshaft position (ckp) sensor (on lower front of engine, near crankshaft)
Ect sens sig
Engine control module (ecm)
Engine coolant temperature (ect) sensor (on left side of engine)
Evap sol ctrl
G103 (left rear of engine)
Gen field sig
Gen on sig
Gnd
Gnd e
Heated oxygen sensor (ho2s) bank 1 sensor 1 (in exhaust pipe, in front of catalytic converter)
Heated oxygen sensor (ho2s) bank 2 sensor 1 (in exhaust pipe, in front of catalytic converter)
Ho2s hi sig
Ho2s lo ctrl
Ho2s lo sig
Ic 1 ctrl
Ic 2 ctrl
Ic 3 ctrl
Ic1 ctrl b
Ic3 ctrl c
Ign volt f
Ignition control module (icm) (on top right side of engine, ic2 ctrl at ignition coil)
Inj 1 ctrl
Inj 2 ctrl
Inj 3 ctrl
Inj 4 ctrl
Inj 5 ctrl
Inj 6 ctrl
J101
J102
J120
J150
Knock sensor (ks) 1
Knock sensor (ks) 2
Ks 1 sig
Ks 2 sig
Low ref
Low ref d
Map sens sig
Nca
Pnk
Red
Sens sig
Starting/charging system
Tac mtr 1
Tac mtr 2
Tan
Throttle body
Tp sens 1
Tp sens 2
X176

5 3L VIN 4 Engine Performance Wiring Diagram 1 of 5 for Chevrolet Express LT 2014 1500

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(5.3l)
(cutaway: in chassis harness, 87 cm from ebcm connector breakout) (passenger/cargo: in chassis harness, 44 cm from ebcm connector breakout)
(in engine harness, 16 cm from underhood fuse block x1 breakout) j123
(in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 2
(in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 2
(in instrument panel harness, 5 cm from x200 breakout towards instrument panel cluster) j231
(or pnk)
5.3l
5v ref 1
5v ref 2
A/c refrigerant pressure sensor
Acc ser data
Accelerator pedal position (app) sensor (under left side of dash)
Anti-lock brakes system
App sens 1 sig
App sens 2 sig
Batt pos volt
Brake pedal position (bpp) sensor (top of brake pedal assembly)
Brk sens sig
Brk sens sply
Brk sw fuse 13 10a
Comp sens sig
Computer data lines system
Cutaway
Ecm batt fuse 19 10a
Ecm ign/ glow plug mdl ign fuse 30 15a
Ect sens sig
Engine control module (ecm)
Except 5.3l
Exterior lights system
Fuel level sens
Fuel pump & sender assembly (on fuel tank)
Fuel tank pressure (ftp) sensor (on fuel tank)
G103 (on right rear of engine)
Gmlan data+
Gmlan data-
Ho2s hi sig
Ho2s lo sig
Hot at all times
Hot w/ run/ crnk relay 15 energized
Iat sens sig
Ign volt
J101
J301
Low ref
Maf sens sig
Mass air flow (maf)/intake air temperature (iat) sensor (attached to air intake duct)
Park/neutral sig
Pnk
Press sens sig
Pwrtrn rly ctrl
Relay ctrl
Start rly ctrl
Starting/ charging system
Stop lamp switch (behind left side of dash, above brake pedal)
Tan
Tcc brake sig
Transmissions system
Underhood fuse block (on left side of engine compt)
Vss
X100
X101
X103
X128
X221

5 3L VIN 4 Engine Performance Wiring Diagram 2 of 5 for Chevrolet Express LT 2014 1500

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(on left rear of engine) g102
(on right rear of engine) g103
(or pnk)
4.8l
5.3l
Air conditioning system
Clutch rly ctrl
Cnstr vent sol fuse 56 10a
Computer data lines system
Driver information center display
Ecm pwr/trn fuse 78 10a
Engine control module (ecm)
Engine coolant radiator temperature sensors
Evap sol ctrl
Evaporative emission (evap) canister vent solenoid (near front of fuel tank)
Even ign/ inj fuse 79 20a
Flex fuel fuse 15a
Fuel pump relay 38 (4.8l)
G400 (on inner left rear frame rail)
Gas fuel pump fuse 24 30a
Gmlan ser data
Gnd
Ho2s hi sig
Ho2s lo ctrl
Hot at all times
Ic 1 ctrl
Ic 2 ctrl
Ic 3 ctrl
Ic 4 ctrl
Ic 5 ctrl
Ic 6 ctrl
Ic 7 ctrl
Ic 8 ctrl
Instrument cluster
J101
J102
Lo spd
Logic
Low engine oil pressure ind
Low ref
Maf/ cnstr vent fuse 64 15a
Malfunction indicator lamp
Mil ctrl
O2 snsr 1 (pre)/cls fuse 77 10a
O2 snsr 2 (post) fuse 62 10a
Odd ign/inj fuse 65 20a
Pnk
Pwr/trn relay 49
Tan
Tos sig
Transmissions system
Underhood fuse block (on left side of engine compt)
X100
X101
X127
X150

5 3L VIN 4 Engine Performance Wiring Diagram 3 of 5 for Chevrolet Express LT 2014 1500

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(at rear of vehicle, attached to left rear frame rail) (5.3l) fuel pump flow control module
(at top left of engine)
(in odd ignition/coil module jumper harness, on top left side of engine)
5v ref
Body control module (behind lower right side of dash)
Brake lo ref
Brake sens sig
Computer data lines system
Fcsm batt fuse 36 20a
Fscm ign fuse 6 10a
G102 (on left rear of engine)
G300 (on left frame rail, near ebcm)
Gmlan data +
Gmlan data -
Gnd
Hot at all times
Hot w/ run/ crnk relay 15 energized
Ign volt
Ignition coil/module 1
Ignition coil/module 3
Ignition coil/module 5
Ignition coil/module 7
J102
J182
J184 (in odd ignition/coil module jumper harness, on top left side of engine)
J187
J315
Low ref
Nca
Pnk
Pnk d
Pump ctrl
Red c
Relay ctrl
Sens sig
Serial data
Spark plug
Tan
Underhood fuse block (on left side of engine compt)
X126

5 3L VIN 4 Engine Performance Wiring Diagram 4 of 5 for Chevrolet Express LT 2014 1500

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(at top right of engine)
(in even ignition/coil module jumper harness, on top right side of engine)
(in even ignition/coil module jumper harness, on top right side of engine) j183
(on left side of intake manifold)
(on right side of intake manifold)
C10
Engine oil pressure (eop) sensor (on top rear of engine)
Fuel composition sensor
Fuel injector 1
Fuel injector 2
Fuel injector 3
Fuel injector 4
Fuel injector 5
Fuel injector 6
Fuel injector 7
Fuel injector 8
Fuel rail pressure (fpr) sensor
G102 (on left rear of engine)
G103 (on right rear of engine)
Ignition coil/module 2
Ignition coil/module 4
Ignition coil/module 6
Ignition coil/module 8
J101
J102
J185
J188
Nca
Pnk
Pnk d
Red c
Spark plug
Tan
X101
X127

5 3L VIN 4 Engine Performance Wiring Diagram 5 of 5 for Chevrolet Express LT 2014 1500

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(on top of engine, near throttle body) evaporative emission (evap) canister purge solenoid valve
5v ref 1
5v ref 2
Camshaft position (cmp) sensor (front of engine)
Cen field sig
Ckp sens sig
Cmp sens sig
Crankshaft position (ckp) sensor (on lower right rear of engine, near starter motor)
Ect sens sig
Engine control module (ecm)
Engine coolant temperature (ect) sensor (at left front of engine)
Gen on sig
Heated oxygen sensor (ho2s) bank 1 sensor 1 (in exhaust pipe, in front of catalytic converter)
Heated oxygen sensor (ho2s) bank 2 sensor 1 (in exhaust pipe, in front of catalytic converter)
Ho2s hi sig
Ho2s lo ctrl
Ho2s lo sig
Inj 1 ctrl
Inj 2 ctrl
Inj 3 ctrl
Inj 4 ctrl
Inj 5 ctrl
Inj 6 ctrl
Inj 7 ctrl
Inj 8 ctrl
Knock sensor (ks) 1
Knock sensor (ks) 2
Ks 1 sig
Ks 2 sig
Low ref
Manifold absolute pressure (map) sensor (at top rear of engine, on intake manifold)
Map sens sig
Pnk
Pnk d
Pre sens sig
Sol ctrl
Starting/ charging system
Starting/charging system
Tac mtr ctrl 1
Tac mtr ctrl 2
Tan
Tan a
Throttle body
Tp sens 1 sig
Tp sens 2 sig
X177

Backup Lamps Wiring Diagram for Chevrolet Express LT 2014 1500

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(4.8l, 5.3l & 6.0l: on right rear of engine) (6.6l: left front lower side of the engine block) (4.3l: left rear of engine) g103
(provisional)
All times
Automatic transmission
Automatic transmission assembly (6 speed a/t)
Automatic transmission internal mode switch (ims)
Aux/trlr bck/up fuse 10a
Backup alarm (rear of vehicle on frame)
Bck/up lamp pcb relay k7
Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Bus - data
Computer data lines system
Control solenoid valve assembly
Cutaway
D3 x3
Data bus +
Data bus - x3
G302 (behind left kick panel)
G400 (on inner left rear frame rail)
G401 (on top of right "d" pillar)
G402 (on top of left left "d" pillar)
Gmlan hi spd
Gnd
H x405
Hi spd gmlan data bus +
Hi spd gmlan serial data bus (+)
Hi spd gmlan serial data bus (-)
Hot at
J101
J247
J402
J403
J410
Left backup lamp (cargo/ passenger)
Left tail/ stop & turn signal lamp
Mega fuse 125a
Nca
Park/neutral position (pnp) switch
Power distribution system
Red
Relay ctrl x2
Right backup lamp (cargo/ passenger)
Right tail/ stop & turn signal lamp
Sig a
Sig b
Sig c
Tail lamp bck/up fuse 10a
Tan
Trailer connector (if equipped)
Trans rng sw sig a
Trans rng sw sig b
Trans- mission control module (tcm)
Transmission control module (tcm) (left front corner of engine compt)
Underhood fuse block (on left side of engine compt)
W/ electrical backup alarm
X1 e2
X1 j5
X175
X401
X401 f
X402

Exterior Lamps Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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(in dash harness, 13 cm from radio breakout) j245
(in dash harness, 6 cm from radio breakout) j246
(provisional)
A x419
Alarm enable sig
Aux prk lamp fuse 15a
B3 x600
Bcm 6 fuse 10a
Bcm3 fuse 10a
Bcm5 fuse 10a
Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Brake sig
Cargo/ passenger
Center high mounted stop lamp (chmsl)
Chmsl ctrl
Computer data lines system
Cutaway
Data bus (-)
Data bus (+)
Driver outside rearview mirror (in driver door)
Frt prk lamp fuse 10a
G302 (behind left kick panel)
G347
G348
G401 (on top of right "d" pillar)
G402 (on top of left "d" pillar)
Gnd
Ground distribution system
Hazard sw sig
Hazard switch
Hazard warning switch
Hot at all times
J202
J248
J403
J403 (w/o rear window defogger)
J410
J500
J600
J902 (w/ rear window defogger)
Left
Left tail/stop & turn signal lamp
Lf turn sig lp ctrl
License plate lamp
Lr turn sig lp ctrl
Lt rear park lamp fuse 10a
Mega fuse 125a
Nca
Park lamp ctrl
Park lamps sig
Passenger outside rearview mirror (in right front passenger door)
Prk lamp relay k3
Rf turn sig lp ctrl
Right
Right tail/stop & turn signal lamp
Rr turn sig lp ctrl
Rt rear prk lamp fuse 10a
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Stop lamps ctrl
Tan
Trailer tow circuit
Trlr prk lamp fuse 15a
Under- hood fuse block (on left side of engine compt)
Upftr park lamp fuse 10a
W/ ambulance & recreational vehicle sales package
W/ folding mirrors
X1 a5
X1 b5
X1 g3
X2 b4
X200
X3 j2
X318
X320
X320 x
X401
X402
X402 a
X412
X412 c (w/o rear window defogger)
X500

Exterior Lamps Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(in engine harness, 16 cm from underhood fuse block x1 breakout) j123
(in forward lamp harness, 48 cm from left headlamp breakout) j121
(on inner left rear frame rail) g400
(provisional)
4 speed a/t
4.3l
6 speed a/t
6.6l
A x221
A5 x101
Auto
Automatic transmission
Aux stop lamp fuse 15a
Brk sw fuse 10a
Computer data lines system
Control solenoid valve assembly
Cutaway
E x405
Engine control module (ecm)
Except 4.3l
G100 (on left front of engine compt)
G101 (on right front of engine compt)
G102 (4.8l, 5.3l & 6.0l: on left rear of engine) (6.6l: left front lower side of the engine block) (4.3l: right rear of engine)
G302 (behind left kick panel)
Head
Headlamp & panel dimmer switch
Hot at all times
Hot w/ run/crank relay 15 energized
Ign
Instrument panel cluster (ipc)
Ipc fuse 10a
J100
J102
J110
J231 (in instrument panel harness, 5 cm from x200 breakout towards instrument panel cluster)
J248
J402
Left front side marker lamp
Left park/ turn signal lamp
Left turn ind
Logic
N x174
Off
Park
Pnk
Right front side marker lamp
Right park/ turn signal lamp
Right turn ind
Ser data
Stop lamp switch (behind left side of dash, above brake pedal)
Stop lamps pcb relay
Transmission control module (tcm) (left front corner of engine compt)
Underhood fuse block (on left side of engine compt)
X1 c7
X100
X2 a4
X2 e2
X2 f3
X3 a1
X3 c5
X3 h7
X3 j4
X4 c
X405 c
X405 f
X405 g

Trailer Tow Wiring Diagram for Chevrolet Express LT 2014 1500

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Backup lamps circuit
Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
G302 (behind left kick panel)
G400 (on inner left rear frame rail)
Hot at all times
Hot w/ prk lamp relay k3 energized
J247
J460 (except 5.3l w/ backup alarm)
Left trailer stop/turn signal lamp relay
Lt stop/ trn trlr fuse 10a
Lt trailer turn signal lamp
Right trailer stop/turn signal lamp relay
Rt stop/ trn trlr fuse 10a
Rt trailer turn signal lamp
Trailer connector
Trlr prk lamp fuse 15a
Trlr wrg fuse 11 30a
Trlr wrg fuse 30a
Underhood fuse block (on left side of engine compt)
X1 b2
X2 a7
X2 e3
X2 e4
X3 b5
X3 c4
X3 d4
X3 g3

Ground Distribution Wiring Diagram 1 of 5 for Chevrolet Express LT 2014 1500

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(4.3l) ignition control module (icm)
(6.6l) cooling fan motor
(6.6l) engine oil level (eol) switch
(6.6l) evaporative emission system leak detection pump
(6.6l) fan cltch (ev) relay
(6.6l) fuel pressure regulator 1 shield
(6.6l) fuel pressure regulator 2 shield
(6.6l) glow plug control module (gpcm)
(6.6l) wait to start indicator
(in odd ignition/coil module jumper harness, on top left side of engine)
(manual a/c) a/c compressor clutch
(w/ chrome grille radiator) left high beam headlamp
(w/ chrome grille radiator) left low beam headlamp
(w/ engine remote start) hood ajar switch
(w/o chrome grille radiator) left headlamp
4.3l/6.6l
4.8l/5.3l/6.0l
Auxiliary battery
Battery
Battery current sensor (except 6.6l)
Blower motor resistor assembly
Crnk relay
Exhaust gas recirculation valve shield
Fuel injector control module
Fuel pump relay
G100 (on left front of engine compt)
G102 (4.3l: right rear of engine) (4.8l, 5.3l & 6.0l: on left rear of engine) (6.6l: left front lower side of engine block)
G104 (right side of engine)
G105 (on right front frame rail, in engine compt)
G106 (on right front of engine compt)
G110 (lower left front of engine)
G120
G305 (6.6l) (left center outer frame rail, near secondary battery)
Horn assembly
Ignition coil 1
Ignition coil 2
Ignition coil 3
Ignition coil 4
Ignition coil 5
Ignition coil 6
Ignition coil 7
Ignition coil 8
Ignition run relay
J100
J102 (engine harness, 6 cm from map sensor breakout)
J176
J179 (in lpg main harness, at ground to lpg control module & wait to start lamp)
J183 (in even ignition/ coil module jumper harness, on top right side of engine)
J369 (in lpg chassis harness, 7.5 cm from primary fuel level sensor)
Jumper harness, 9 cm from x110 connector)
Left front marker lamp
Left park/turn signal lamp
Lpg bypass solenoid valve
Lpg control module
Nca
Primary fuel level sensor
Run/ crnk relay
Secondary fuel level sensor
Stop lamp relay
Underhood fuse block (on left side of engine compt)
Underhood lamp
W/ 3 tank vehicle kit & lpg
W/ 4 tank complete vehicle kit
W/ 4 tank vehicle kit & lpg
Wait to start indicator
Windshield wiper motor
Windshield wiper relay
Wiper diode
Wiper hi diode
X100
X109
X126
X127
X142

Ground Distribution Wiring Diagram 2 of 5 for Chevrolet Express LT 2014 1500

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(4 speed a/t) automatic transmission assembly
(4 speed a/t) transmission control module (tcm)
(6 speed a/t) automatic transmission assembly
(6.6l) multi- function intake air sensor
(except 6.6l) engine control module (ecm)
(except 6.6l) mass air flow (maf)/ intake air temperature (iat) sensor
(heavy duty) brake fluid level switch
(if equipped) backup alarm
(in lpg chassis harness, 30.5 cm from primary liquid propane delivery module)
(not used) g
(w/ dedicated cng) cng control module
4.3l/ 5.3l
4.8l & 6.0l
4.8l, 6.ol, 4.3l w/o hd truck trailer
5.3l w/ hd truck trailer w/o backup alarm
6.6l
Body control module (bcm)
C10
Control solenoid valve assembly
Coolant heater
Coolant heater fuel pump
Engine control module (ecm)
Except 5.3l w/ hd truck trailer
Except 5.3l w/ hd truck trailer & backup alarm
Exhaust gas recirculation (egr) valve shield
Fuel compo- sition sensor
Fuel cut off solenoid valve
Fuel filter pressure switch
Fuel heater
Fuel pressure regulator 1 shield
Fuel pressure regulator 2 shield
Fuel pump
Fuel pump & level sensor assembly
G103 (4.3l: left rear of engine) (4.8l, 5.3l & 6.0l: on right rear of engine) (6.6l: left front lower side of engine block)
G109 (6.6l) (lower right front of engine)
G350 (rear of transmission case)
G400 (on inner left rear frame rail)
Glow plug control module (gpcm)
H x1
Intake air valve shield
J160 (in engine harness, 5.5 cm from x110 breakout)
J161 (in engine harness, 6.5 cm from engine control module x2 connector breakout)
J162 (in engine harness, 10 cm from g109 breakout)
J163 (in engine harness, 23 cm from g109 breakout)
J316 (in transmission harness, 20 cm (7.87 in) from x174)
J402 (cutaway: in chassis harness, 24 cm from g400 breakout) (passenger/cargo: in chassis harness, 16 cm from g400 breakout)
J430 (in lpg fuel tank harness, 1778mm from x350) x350
Nca
Park/ neutral position (pnp) switch
Primary lpg pump assembly
Reductant line heater
Reductant pump
Reductant sensor module
Reductant tank heater
Secondary lpg pump assembly
Trailer connector b
W/ 3 tank complete vehicle kit & lpg
W/ 4 tank complete vehicle kit
W/ cargo 6.6l, except 5.3l w/ hd truck trailer & backup alarm
W/ dedicated cng
W/ fuel fired auxiliary heater
W/o dedicated cng
X1 (4.8l/ 5.3l/ 6.0l)
X101
X174
X2 (4.3l)
X305
X316
X350
X395
X405

Ground Distribution Wiring Diagram 3 of 5 for Chevrolet Express LT 2014 1500

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(6.6l) engine coolant level switch
(if equipped) telematics button assembly
(if equipped) telematics communication interface module
(in dash harness, 36 cm from x200 breakout) j247
(in dash harness, 5 cm from inflatable restraint i/p module connector breakout)
(not used) c
(w/ active brake control) traction control switch (tcs)
(w/ brake warning indicator) brake booster fluid flow alarm switch
(w/ cigarette lighter ashtray) cigar lighter receptacle (w/o cigarette lighter ashtray) center console accessory power receptacle 1
(w/ digital audio) digital radio receiver
(w/ electric rear window defogger & power mirrors) rear defog relay k5
(w/o radio) chime alarm control module
Air temperature door actuator
Ambient light sensor
Bck/up lamp pcb relay k7
Body control module (bcm)
Cargo door unlock relay
Center console accessory power receptacle 2
Communication system
Compass module
Content theft deterrent module
Courtesy lamps provision relay
Data link connector (dlc)
Door lock relay
Door unlock relay
Driver door unlatch relay
Driver information center (dic) switch
G301 (behind left kick panel)
G302 (behind left kick panel)
G304 (behind right kick panel)
Headlamp & panel dimmer switch
Heavy duty
Horn switch
Hvac control switch assembly
Ignition power provision relay
Inflatable restraint front passenger presence system (pps) sensor
Inflatable restraint sensing & diagnostic module (sdm)
Inside rearview mirror
Instrument panel cluster (ipc)
J202 (in steering column harness, 25 cm from x200 connector)
J210 (in steering wheel harness, near x200 connector)
J244 (in instrument panel harness, 5 cm from x200 breakout towards instrument cluster panel)
J248 (in dash harness, 8 cm from x200 breakout)
J264 (in steering column harness, 29 cm from x200)
J265 (in instrument panel harness)
J271 (in instrument panel harness, 7.5 cm from vehicle communication interface module breakout)
Left steering wheel controls switch
Nca
Passenger air bag disable indicator
Passenger air bag disable switch
Passenger compartment fuse block
Radio
Rap relay k6
Rear parking assist control module
Rearview camera
Redundant radio steering wheel controls
Remote control door lock receiver (rcdlr)
Right steering wheel controls switch
Rollover sensor
Run relay k1
Rv upfitter
Shift lock control solenoid actuator
Steering wheel air bag coil
Steering wheel speed/ position sensor
Tow/ haul switch
Turn signal/ multi-function switch
W/ automatic electronic cruise control
W/ automatic electronics cruise control &
W/ compass display
W/ radio
W/ rear window defogger & power mirrors
W/ redundant radio steering wheel control
W/ remote keyless entry & low tire pressure indicator
W/ uys
W/ vehicle
W/o automatic electronics cruise control &
W/o manual suppression switch & rv upfitter
W/o uys
W/o vehicle
Windshield washer fluid pump
Windshield wiper motor
X100
X141
X2 passenger compartment fuse block
X200
X205
X222
X306
X318
X403

Ground Distribution Wiring Diagram 4 of 5 for Chevrolet Express LT 2014 1500

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(if equipped) auxiliary blower motor switch
(if equipped) driver seat adjuster switch
(if equipped) passenger seat adjuster switch
(not used) c
(w/ auxiliary heater plumbing & wiring) (not used) b
(w/ cargo passenger) right rear door side jam switch
(w/ hinged door) left rear door side jam switch
Auxiliary hvac control module
Cm from front courtesy breakout)
Cutaway upfitter
Dome lamp
Driver door latch assembly
Driver door lock switch
Driver outside rearview mirror
Driver window switch
E x319
Front auxiliary hvac control assembly
Front dome/ reading lamps
G347 (on bottom of left "b" pillar)
G348 (right side of passenger compt, lower right of "b" pillar)
If equipped
J500 (in left front door harness, 6 cm from left front door speaker breakout)
J501 (in left front door harness, 7 cm from left front door speaker breakout)
J600 (in right front door harness, 7 cm from right front door speaker breakout)
J601 (in right front door harness, 5 cm from passenger outside rearview mirror breakout)
Left sunshade
Left vanity mirror lamp
Nca
Outside rearview mirror switch
Passenger door latch assembly
Passenger door lock switch
Passenger outside rearview mirror
Passenger window switch
Rear auxiliary hvac control assembly
Right sunshade
Right vanity mirror lamp
Rv upfitter
Rv upfitter (not used) p
Splice block jx347
Splice block jx348
W/ electric side door lock control
W/ power mirrors & windows
W/ rear a/c & front vanity mirror w/o rv upfitter
W/ rear a/c & rv upfitter
W/ rear a/c & rv upfitter & swb passenger
W/ rear a/c w/o rv upfitter
W/o electric side door lock control
W/o power mirrors & windows
W/o rear a/c & front vanity mirror w/ cutaway upfitter
X205
X306
X307
X320
X321
X409
X500
X600

Ground Distribution Wiring Diagram 5 of 5 for Chevrolet Express LT 2014 1500

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(5.3l) fuel pump control module
(cargo w/o rv upfitter) dome lamp
(light duty) brake pressure differential switch
(w/ chrome grille radiator) right high beam headlamp
(w/ chrome grille radiator) right low beam headlamp
(w/o chrome grille radiator) right headlamp
Auxiliary air temperature actuator
Auxiliary blower motor
Auxiliary mode actuator
B x409
Center high mounted stop lamp (chmsl)
Dome lamp
Door window
Door window w/ stationary rear
Electronic brake control module (ebcm)
Front cargo fluorescent work lamp
Fuel filter pressure switch
G101 (on right front of engine compt)
G111 (6.6l)
G300 (on left frame rail, near ebcm)
G401 (on top of right "d" pillar)
G402 (on top of left "d" pillar)
G403 (w/ commercial tradesman sales package) (on center of left "d" pillar)
J110 (in forward lamp harness, 12 cm from left headlight connector breakout)
J300 (in prp/uf2 harness, 42 cm from left front side front access panel actuator)
J315 (in chassis harness, 10 cm from g300 breakout)
J330 (in rear headliner harness, 30 cm from x420)
J403 (in body harness, 6 cm from g401 breakout)
J410 (in body harness, 47 cm from x401 breakout)
J411 (in rear hvac harness, 6 cm from auxiliary blower motor connector breakout)
J901 (in rear cargo door harness, 35 cm from x902)
J902 (in right rear door harness, 19 cm from license lamp connector breakout)
Left backup lamp
Left front access panel fluorescent work lamp
Left front side front access panel actuator
Left front side rear access panel actuator
Left rear access panel fluorescent work lamp
Left rear defogger grid
Left rear side front access panel actuator
Left rear side rear access panel actuator
Left tail/stop & turn signal lamp
License plate lamp
Middle dome/ reading lamps
Nca
Passenger
Rear auxiliary hvac control assembly
Rear cargo door latch assembly
Rear cargo door lock switch
Rear cargo fluorescent work lamp
Rear dome/ reading lamps
Right access panel fluorescent work lamp
Right backup lamp
Right front marker lamp
Right park/turn signal lamp
Right rear defogger grid
Right side front access panel actuator
Right side rear access panel actuator
Right tail/stop & turn signal lamp
W/ auxiliary heater & rear a/c
W/ auxiliary heater w/o rear a/c
W/ auxiliary heater, rear a/c & rear window defogger
W/ cargo lamps
W/ electric side door lock control
W/ rear a/c
W/ rear a/c & swb
W/ rear window defogger
W/ swing out rear
W/o active brake control w/ active brake control
W/o auxiliary heater & rear a/c
W/o electric side door lock control
W/o rear window defogger
X400
X401
X402
X409
X411
X412
X420
X901
X902

Headlights Wiring Diagram for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
Ambient light sensor (on top of instrument panel)
Ambient sens sig
Auto
Body control module (bcm) (behind lower right side of dash)
Computer data lines system
Drl 1 fuse 67 15a
Drl 2 fuse 66 10a
Drl pcb relay k19
Ftp
Fusible link 2
G100 (on left front of engine compt)
G101 (on right front of engine compt)
G302 (behind left kick panel)
Gnd
Head
Head lamp high beam relay
Headlamp & panel dimmer switch
Headlamp lo sig
Headlamp sw sig
Hi beam rly ctrl
High beam ind
Hot at all times
Hot w/ run/crnk relay 15 energized
Ign
Instrument panel cluster (ipc)
Ipc fuse 10 10a
J100
J110
J202
J248
Left headlamp
Left high beam headlamp
Left low beam headlamp
Lo beam ctrl
Lo beam rly ctrl
Logic
Low
Low beam pcb relay k6
Lt hi beam fuse 51 10a
Lt lo beam fuse 53 10a
Off
Park
Park brake switch (under left side of dash)
Park brk sw sig
Park lamps sig
Pnk
Red
Right headlamp
Right high beam headlamp
Right low beam headlamp
Rt hi beam fuse 52 10a
Rt lo beam fuse 54 10a
Serial data
Switch off sig
Switch on sig
Turn signal/ multi-function switch
Underhood fuse block (on left side of engine compt)
W/ chrome grille
W/o chrome grille
X200
X220

Horn Wiring Diagram for Chevrolet Express LT 2014 1500

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(w/ automatic electronics cruise control & redundant radio steering wheel controls) j210
A x1
A1 x200
Body control module (bcm) (behind lower right side of dash)
G102 (4.3l: right rear of engine) (4.8l, 5.3l & 6.0l: on left rear of engine) (6.6l: left front lower side of engine block)
G302 (behind left kick panel)
Horn assembly (at left front of engine compt)
Horn fuse 16 20a
Horn relay ctrl
Horn switch (in steering wheel)
Horn/ wash pcb relay k5
Hot at all times
Inflatable restraint steering wheel module coil (at top of steering column)
J102
J264
Tan
Underhood fuse block (on left side of engine compt)
X1 a
X1 b4
X2 a
X2 k

Instrument Cluster Wiring Diagram 1 of 3 for Chevrolet Express LT 2014 1500

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(if equipped) electronic compass module
Abs ind
Air bag ind
Ajar sw sig
Ambient air temperature sensor (w/ outside temperature display) (behind front grille, on radiator support)
B11
Batt pos volt
Belt ind
Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Brake ind
Charge ind
Cmps fuse 19 10a
Computer data lines system
Cruise ind
Dic sw sig
Driver information center (dic) display
Engine controls system
Engine coolant level switch (6.6l) (right front of engine compt, attached to bottom of coolant surge tank)
Engine coolant temperature gauge
Fuel gauge
G302 (behind left kick panel)
Gmlan serial
Gnd
High beam ind
Hot at all times
Hot w/ run relay k1 energized
Hot w/ run/crank relay 15 energized
Ign volt
Ind ctrl
Ind lamp (mil) malfunction
Instrument panel cluster (ipc)
Ip cluster fuse 23 10a
Ipc fuse 10 10a
J244
Left turn ind
Lf door ajar sw
Liftgate
Logic
Low engine oil pressure gauge
Low fuel ind
Low ref
Low stability ind
Lr door open sw
Mil ctrl
Network 3
Odometer
Park brake switch (under left side of dash)
Pass off ind
Pass on ind
Pass seat belt
Passenger seat
Pnk
Pressure ind low oil
Prnd 321
Rf door ajar sw
Right turn ind
Rr door open sw
Seat belt ind
Security ind
Sens sig
Seo fuse 27 10a
Speedometer
Sw sig
Switch sig
Tire pressure ind
Tow/haul ind
Traction control ind
Underhood fuse block (on left side of engine compt)
Volts gauge
W/ brake warning indicator system
W/ odometer security wiring provision (seo)
W/o odometer security wiring provision (seo)
Wait to start ind (diesel)
X100
X150
X205
X220
X318

Instrument Cluster Wiring Diagram 2 of 3 for Chevrolet Express LT 2014 1500

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(or 6049)
4.3l
4.8l/5.3l/6.0l
5v ref 2
6.6l
C12
Cargo door latch assembly (w/ cargo/passenger) (in right rear cargo door)
Computer data lines system
Data bus(+)
Data bus(-)
Driver door latch assembly (at rear of driver door)
Driver information center (dic) switch
Engine control module (ecm) (left side of engine compt)
G302 (behind left kick panel)
G347
G348
G401 (on top of right "d" pillar)
Hinged door)
Illumi- nation
Interior lights system
J244
J501 (w/ electronic side door lock control))
J601 (w/ electronic side door lock control)
J901 (w/ electronic side door lock control)
Left sliding door ajar switch (w/ left rear
Low ref
Passenger door latch assembly (at rear of front passenger door)
Person- alization
Pnk
Right sliding door ajar switch (w/ cargo/passenger)
Sens sig
Set/ reset
Splice pack jx347 (in body harness, attached to lower left "b" pillar)
Splice pack jx348 (in body harness, attached to lower right "b" pillar part of g348)
Switch sig
Tan
Trip/ fuel
Vehicle info
W/ brake warning indicator system
Water in fuel sensor
X101
X107
X174
X316 b
X318
X400
X500
X600

Instrument Cluster Wiring Diagram 3 of 3 for Chevrolet Express LT 2014 1500

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4.3l
4.3l, 4.8l & 6.0l (vin g)
4.8l/5.3l/6.0l
5.3l
5v ref
6.0l (vin b)
6.6l
Alternative fuel tank pressure sensor
B x141
B4 x101
Brake booster fluid flow alarm switch (in power steering pump outlet hose)
Brake booster fluid pressure alarm switch (in power steering pump inlet hose)
Brake pressure differential switch (on brake valve, near front of ebcm)
Cng control module (6.0l(vin b)) (forward of left rear spring on frame)
Cng fuel vehicle
Compt)
Engine controls system
Engine oil level switch (on left side of oil pan)
Engine oil pressure (eop) sensor (except 6.6l: on top rear of engine) (6.6l: lower left side of engine)
Fuel level sensor (on fuel tank)
Fuel pump & sender assembly (on fuel tank)
Fuel pump relay sig
G103 (4.3l: left rear of engine) (6.6l: left front lower side of engine block) (4.8l, 5.3l & 6.0l: on right rear of engine)
G110 (lower left front of engine)
G300 (on left frame rail, near ebcm)
G302 (behind left kick panel)
Heavy duty
J101
J244
J301 (cutaway: in chassis harness, 87 cm from ebcm connector breakout) (passenger/cargo: in chassis harness, 44 cm from ebcm connector breakout)
J315
J369
Light duty
Low ref
Lpg control module (6.0l(vin b)) (on tank control box)
Lpg fuel vehicle w/ 3 tank
Lpg fuel vehicle w/ 4 tank
Pressing
Primary fuel level sensor
Primary sig fuel sender
Red
Secondary fuel level sensor
Secondary sig fuel sender
Sensing
Tan
W/ brake warning indicator system
X100
X101
X110
X141
X350

Courtesy Lamps Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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(in body harness, 15 cm from x306 breakout) j331
(or 690)
(provisional)
(w/ rear a/c & front vanity mirror w/o rv upfitter) j314
All times
Body control module (bcm) (behind lower right side of dash)
C12
C7 x3
Cargo
Cargo/passenger
Computer data lines system
Courtesy lamps provision relay
Courtesy lp ctrl
Ctsy lp ctrl
Data bus (+)
Data bus (-)
Defeat sw sig
Dome
Fl dome rly ctrl
Front dome/ reading lamps
G102 (except 6.6l & 4.3l: on left rear of engine) (6.6l: left front lower side of the engine block) (4.3l: right rear of engine)
G302 (behind left kick panel)
G348
G401 (on top of right "d" pillar)
G401 (passenger) (on top of right "d" pillar)
G402 (cargo) (on top of left "d" pillar)
Harness, 11 cm from right sunshade breakout) j332
Headlamp & panel dimmer switch
Hot at
J102
J247
J248
J302
J330
J407 (in rear headliner harness, 44 cm from x420)
J901 (w/ electronic side door lock control)
K x405
Left sunshade (on upper left of headliner)
Lf dr ajar sw sig
Liftgate ajar sw sig
Lr dr open sw sig
Middle dome/ reading lamps
Passenger
Passenger compartment fuse block
Passenger/cargo w/o rv upfitter
R x320
Reading
Rear cargo door latch assembly (in right rear cargo door)
Rear dome/ reading lamps (passenger) dome lamp (cargo)
Red
Rf dr ajar sw sig
Right sunshade (on upper right of headliner)
Rr dr open sw sig
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Tan
Underhood fuse block (on left side of engine compt)
Underhood lamp
Upfitter aux 1 fuse (w/ cutaway, ambulance & rv upfitters) 50a
Upftr ctsy lamp fuse 15a
W/ commercial tradesman sales package & cargo lamp
W/ cutaway
W/ cutaway & cargo w/o rv upfitter
W/ left & right sunshade mirror
W/ rv upfitter
W/ rv upfitter, left & right sunshade mirror
W/o rv upfitter
X1 e1
X100
X109
X2 h7
X205
X205 h
X304
X318
X400
X417
X420
X500
X600

Courtesy Lamps Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(at left "b" pillar) (w/ commercial tradesman sales package & cargo lamp) dome fluorescent work lamps relay
(in prp/uf2 harness, 7 cm from breakout for rear fuse block) j312
(w/ electronic side door lock control) j501
Dome fluorescent work lamps fuse 10a
Driver door latch assembly (at rear of driver door)
Front cargo fluorescent work lamp
G347
G348
G403 (on center of left "d" pillar)
J348
J350 (in prp/uf2 harness, 12 cm from left front dome fluorescent work lamp connector)
J601 (w/ electronic side door lock control)
Left front access panel fluorescent work lamp
Left rear access panel fluorescent work lamp
Left sliding door ajar switch (w/ left rear hinged door)
Passenger door latch assembly (at rear of front passenger door)
Rear body fuse block (on left "b" pillar)
Rear cargo fluorescent work lamp
Red
Right access panel fluorescent work lamp
Right sliding door ajar switch (cargo/ passenger)
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)

Instrument Illumination Wiring Diagram for Chevrolet Express LT 2014 1500

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(at top of steering column) inflatable restraint steering wheel module coil
(in instrument panel harness, 70 cm from radio) j207
(in steering wheel harness, near x200 connector) j208
(not used)
(w/ power mirrors & power windows)
A15
A4 x1
A7 x2
Auto
Auxiliary blower motor switch (if equipped)
Battery pos volt
Bcm 1 fuse 10a
Bcm 2 fuse 10a
Body control module (bcm) (behind lower right side of dash)
C2 x1
Computer data lines system
Data bus (+)
Data bus (-)
Dimming ctrl
Driver door lock switch
Driver information center (dic) switch
Driver window switch
Front auxiliary hvac control assembly
G301 (behind left kick panel)
G302 (behind left kick panel)
G304 (behind right kick panel)
G347
G348
H2 x3
Headlamp & panel dimmer switch
Headlamps off sig
Heavy duty
Hot at all times
Hvac control assembly
Ip dimming volt ref
Ipl dimmer sw sig
Ipl dimming ctrl
J210
J244
J248
J249
J250 (in dash harness, 5 cm from air temperature actuator connector breakout)
J265
J314
J355 (in upfitter hvac control harness, 11 cm from auxiliary hvac control processor connector breakout)
J356 (in body harness, 20 cm from underhood fuse block breakout)
J5 x2
J600
Left steering wheel control switch
Off
Park head
Park lamps sig
Passenger air bag disable switch (w/ manual suppression)
Passenger compartment fuse block
Passenger door lock switch
Passenger window switch
Pnk
Radio
Rear auxiliary hvac control assembly
Right steering wheel control switch
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Str/whl/ snsr fuse 2a
Tan
Tow/haul switch
Traction control switch (tcs) (w/ active brake control)
Underhood fuse block (on left side of engine compt)
W/ automatic electronic cruise control
W/ automatic electronic cruise control & redundant radio steering wheel control
W/ auxiliary heater & w/o rear a/c
W/ electric side door lock
W/ power operated window
W/ rear auxiliary controls
W/ redundant radio steering wheel control
W/ rv upfitter
W/o rear auxiliary controls
W/o redundant radio steering wheel control
W/o rv upfitter
X1 a6
X200
X205
X319
X420
X500
X600

Navigation Wiring Diagram with UYS 1 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
(w/ vehicle communication system) j271 (w/o vehicle communication system) j248
Antenna
Antenna in
Anti-lock brakes system
Body fuse block (under left front seat)
Camera sig +
Camera sig -
Coax
Computer data lines system
G4 x1
Gnd
Hot at all times
Interior lights system
Led dimming ctrl
Lf mid out (+)
Lf mid out (-)
Lo ref
Lo serial data
Low ref
Lr mid out (+)
Lr mid out (-)
Navigation antenna
Navigation system
Pnk
Radio
Rdo/ chime fuse 20 15a
Rf mid out (+)
Rf mid out (-)
Rr mid out (+)
Rr mid out (-)
Tan
Usb cable
Usb receptacle
Vehicle spd sig
Voice sig
X10
X318

Navigation Wiring Diagram with UYS 2 of 2 for Chevrolet Express LT 2014 1500

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(in body harness, 10 cm from x415 breakout) j451
(in body harness, 10 cm from x419 breakout) j450
(not used)
(or pnk)
(or pnk) e
12v ref
A11
Antenna in
B12
Bare
Body control module (bcm) (behind lower right side of dash)
C12
Cellular phone & navigation antenna
Coax
Computer data lines system
Cruise control system
Cutaway, upfitter
Drain wire
Hi spd gmlan serial data bus (+)
Hi spd gmlan serial data bus(-)
Info
J452 (in body harness, 46 cm from x417 breakout)
J453 (in body harness, 52 cm from x417 breakout)
Left front door speaker
Left rear cargo door speaker
Left rear trim panel speaker (if equipped)
Lo gmlan serial data
Lo ref
Mute
Passenger/ cargo
Pnk
Right front door speaker
Right rear cargo door speaker
Right rear trim panel speaker (if equipped)
Right steering wheel control switch
Seek down
Seek up
Source
Steering wheel air bag coil
Steering wheel ctrl
Tan
Telematics communication interface control module (under driver knee bolster panel)
Voice sig
Vol down
Vol up
W/ ambulance/ rv upfitters
X200
X320
X400
X411
X415
X500
X600

Navigation Wiring Diagram without UYS 1 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
(w/ vehicle communication system) j271 (w/o vehicle communication system) j248
Antenna
Antenna in
Anti-lock brakes system
Bare
Body fuse block (under left front seat)
Camera sig +
Camera sig -
Cellular phone & navigation antenna
Coax
Computer data lines system
Drain wire
Gnd
Hi spd gmlan serial data bus (+)
Hi spd gmlan serial data bus(-)
Hot at all times
Interior lights system
J270
Led dimming ctrl
Lf mid out (+)
Lf mid out (-)
Lh audio sig (+)
Lh audio sig (-)
Lo ref
Lo serial data
Lr mid out (+)
Lr mid out (-)
Navigation antenna
Navigation system
Radio
Rdo/ chime fuse 20 15a
Rf mid out (+)
Rf mid out (-)
Rh audio sig (+)
Rh audio sig (-)
Rr mid out (+)
Rr mid out (-)
Spd sig
Tan
Telematics communication interface control module (under driver knee bolster panel)
Usb cable
Usb receptacle
Voice sig
X1 g4
X10
X318

Navigation Wiring Diagram without UYS 2 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
(in body harness, 10 cm from x415 breakout) j451
(in body harness, 10 cm from x419 breakout) j450
(not used)
(or pnk)
(or pnk) e
12v ref
A11
Antenna in
B12
Bare
Batt positive volt
Body control module (bcm) (behind lower right side of dash)
C12
Cellular phone & digital radio antenna
Coax
Computer data lines system
Cruise control system
Cutaway, upfitter
Digital radio receiver (left side of dash)
Drain wire
Gnd
Info
J271
J452 (in body harness, 46 cm from x417 breakout)
J453 (in body harness, 52 cm from x417 breakout)
Left front door speaker
Left rear cargo door speaker
Left rear trim panel speaker (if equipped)
Lh audio sig (+)
Lh audio sig (-)
Lo gmlan serial data
Lo spd gmlan serial data
Mute
Passenger/ cargo
Pnk
Rh audio sig (+)
Rh audio sig (-)
Right front door speaker
Right rear cargo door speaker
Right rear trim panel speaker (if equipped)
Right steering wheel control switch
Seek down
Seek up
Source
Steering wheel air bag coil
Steering wheel ctrl
Tan
Vol down
Vol up
W/ ambulance/ rv upfitters
X200
X320
X400
X411
X415
X500
X600

Parking Assistant Wiring Diagram for Chevrolet Express LT 2014 1500

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(in the rear bumper harness, 15 cm from left rear corner object alarm sensor) j421
Batt pos volt
Computer data lines system
G302 (behind left kick panel)
Ground
Hot at all times
J244
J420 (in the rear bumper harness, 57 cm from the right rear middle object alarm sensor)
Left middle rear object sensor (rear bumper cover)
Left outer rear object sensor (rear bumper cover)
Lo spd gmlan serial data
Lr corner obj sens sig
Lr middle object sens sig
Obj sens low ref
Obj sens sply volt
Rear parking assist control module
Right middle rear object sensor (rear bumper cover)
Right outer rear object sensor (rear bumper cover)
Rpa fuse 10a
Rr corner object sens sig
Rr middle object sens sig
Underhood fuse block (on left side of engine compt)
X115
X202
X408

Rear View Camera Wiring Diagram with UYS for Chevrolet Express LT 2014 1500

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Backup lamp sply volt
Bare
Body control module (bcm) (behind lower right side of dash)
Camera shield
Camera sig +
Camera sig -
G302 (behind left kick panel)
Ground distribution system
Hot w/ ignition run relay energized
Isrvm rvcm fuse 10a
J244
J334
J410 (in body harness, 47 cm from x401 breakout)
J411 (in rear hvac harness, 6 cm from auxiliary blower motor connector breakout)
J907
J908
J910
Nca
Passenger compartment fuse block
Pnk
Radio
Rear camera vision sig +
Rear camera vision sig -
Rearview camera (right rear door in license plate trim)
Run/crank ign volt 1
Sig gnd
Underhood fuse block (on left side of engine compt)
X329
X403

Rear View Camera Wiring Diagram without UYS for Chevrolet Express LT 2014 1500

Krijg toegang tot alle bedradingsschema's auto

Backup lamp sply volt
Bare
Bare c
Bare h
Body control module (bcm) (behind lower right side of dash)
Camera shield
Camera sig +
Camera sig -
G302 (behind left kick panel)
Ground distribution system
Hot w/ ignition run relay energized
Inside rearview mirror
Isrvm rvcm fuse 10a
J244
J334
J370 (in body harness, 31 cm from fuse block)
J371 (in the body harness, 33 cm from yaw and lateral accelerometer sensor)
J372
J907
J908
J990
Logic
Mirror display
Nca
Passenger compartment fuse block
Pnk
Radio
Rear camera vision sig +
Rear camera vision sig -
Rearview camera (right rear door in license plate trim)
Run/crank ign volt 1
Sig gnd
Underhood fuse block (on left side of engine compt)
X204
X329
X403

Power Distribution Wiring Diagram 1 of 5 for Chevrolet Express LT 2014 1500

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(on left side of engine compt) underhood fuse block
30a
4 speed a/t
4.3l/ 5.3l
4.8l & 6.0l
50a
6 speed a/t
6.6l
Abs mdl fuse 2 40a
Abs mtr fuse 1 50a
Automatic transmission assembly
Aux pwr outlet fuse 25 20a
Auxiliary battery
Auxiliary generator
Battery
Bcm 1 fuse 59 10a
Bcm 2 fuse 58 15a
Bcm 3 fuse 26 10a
Bcm 4 fuse 9 10a
Bcm 5 fuse 7 10a
Bcm 6 fuse 72 10a
Bcm 7 fuse 8 10a
Blower motor resistor
Body control module (bcm)
Center console 1 accessory power receptacle
Center console 2 accessory power receptacle
Cigar lighter receptacle
Cnstr vent sol fuse 56 10a
Control solenoid valve assembly
Coolant heater (6.6l w/ auxiliary fuel fired heater)
Cutaway, ambulance &
Data link connector (dlc)
Ecm batt fuse 19 10a
Electrical provisions
Electronic brake control module (ebcm)
Engine control module (ecm)
Evaporative emission (evap) vent solenoid valve
Except 6.6l
Fcsm batt fuse 36 20a
Foh mdl fuse 35 15a
From cmps fuse 19 (diagram 4 of 5)
From run relay k1 (diagram 4 of 5)
Frt blwr fuse 74 40a
Fuel pump control module (5.3l)
Fuse 28
Fusible link 1
Fusible link 2
Fusible link 3
Fusible link 4
Fusible link 5 (w/ dual generator 145a & ambulance upfitter)
G302 (behind left kick panel)
G304 (behind right kick panel)
Generator
Glow plug control module (gpcm)
Instrument panel cluster (ipc) (w/ odometer security wiring provision (seo))
Intake air heater (iah)
J247
J249
Ltr/dlc fuse 73 20a
Nca
Passenger compartment fuse block
Provision ignition power provision relay
Reading lamps
Rear dome/ reading lamps
Rear parking assist control module
Red
Rpa fuse 10a
Rv upfitters
Seo fuse 27 10a
Starter motor
Tcm batt fuse 32 10a
To headlamp high beam relay (diagram 2 of 5)
Trailer connector
Transmission control module (tcm)
Trlr wrg fuse 11 30a
Trlr wrg fuse 42 30a
Underhood junction block
Upfitter aux 2
W/ active brake control
W/ cigar lighter
W/ cutaway upfitter
W/ multiple interior reading lamps
W/ rv upfitter
W/ truck trailer
W/o active brake control
W/o cigar lighter
W/o rv upfitter
X101
X174
X202
X222
X321

Power Distribution Wiring Diagram 2 of 5 for Chevrolet Express LT 2014 1500

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(diagram 3 of 5)
(in engine harness, 5 cm from x101 breakout) j120
(in odd ignition/coil module jumper harness, on top left pnk side of engine) j184
(on left side of engine compt) underhood fuse block
(or red) pnk
3 tank vehicle kit
4 tank vehicle kit
4.3l
4.8l, 5.3l & 6.0l
6.6l
A/c compressor relay 40 (manual a/c)
Central sequential fuel injection (central sfi) (4.3l)
Cooling fan relay (6.6l)
Crnk relay 39
Drl pcb relay k19
Ecm pwr/trn fuse 45 30a
Ecm pwr/trn fuse 78 10a
Engine control module (ecm)
Engine cooling fan motor (6.6l)
Evaporative emission (evap) purge solenoid valve
Even ign/ inj fuse 79 20a
Except 6.6l
Fan cltch (ev) fuse 63 (6.6l) 10a
Flex fuel fuse 15a
From trlr wrg fuse 42 a (diagram 1 of 5)
From v6 fuel inj fuse 75 (diagram 2 of 5)
Fuel composition sensor (4.8l, 5.3l & 6.0l)
Fuel heater (6.6l)
Fuel htr fuse 71 15a
Fuel injector
Fuel pump relay 38
Headlamp high beam relay
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2
Horn wash pcb relay k5
Ignition coil 1
Ignition coil 2
Ignition coil 3
Ignition coil 4
Ignition coil 5
Ignition coil 6
Ignition coil 7
Ignition coil 8
Ignition control module (icm)
J150
J151
J185 (in even ignition/ coil module jumper harness, on top right side of eng)
Left trailer stop/turn signal lamp relay
Low beam pcb relay k6
Lpg fuel vehicle &
Maf/cnstr vent fuse 64 15a
Mass air flow (maf)/ intake air temperature (iat) sensor
Mega fuse 125a
Multi- function intake air sensor (6.6l)
Nca
O2 snsr 1 (pre)/cls fuse 77 10a
O2 snsr 2 (post) fuse 62 10a
Odd ign/ inj fuse 65 (except 6.6l) 20a
Passenger compartment fuse block (diagram 4 of 5)
Pnk
Pnk (or red)
Pnk a
Pnk b
Pnk f
Pwr/trn relay 49
Red
Reductant sensor module
Right trailer stop/turn signal lamp relay (w/ truck trailer)
Stop lamp pcb relay (cutaway)
To even ign/inj fuse 79 (diagram 2 of 5)
To fuse holder (diagram 5 of 5)
To run/crnk relay 15 d
V6 fuel inj fuse 75 15a
W/ cutaway
Windshield washer pump relay
Windshield wiper relay
Windshield wiper speed control relay
Wpr fuse 55 25a
X101
X126
X127
X142
X161
X162
X163
X164
X165
X166
X167
X168
X174
X218
X316
X395

Power Distribution Wiring Diagram 3 of 5 for Chevrolet Express LT 2014 1500

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(in prp/uf2 harness, 7 cm from breakout for rear fuse block) j312
Acc
Air bag fuse 28 10a
Body control module (bcm)
Brk sw fuse 13 10a
Content theft deterrent module (tdm)
Dome fluorescent work lamp relay (w/ comercial tradesman sales package & cargo lamp)
Dome fluorescent work lamps fuse 2 10a
From mega fuse (diagram 2 of 5)
From passenger compartment fuse block (diagram 4 of 5)
Fscm ign fuse 6 10a
Fuel pump control module (5.3l)
G102 (4.3l: right rear of engine) (4.8l/5.3l/6.0l: on left rear of engine) (6.6l: left front lower side of engine block)
Ign
Ignition switch
Inflatable passenger air bag module disable switch
Inflatable restraint sensing & diagnostic module (sdm)
Instrument cluster
Ipc fuse 10 10a
J102
J203 (in steering column harness, 27 cm from x200 connector)
J205 (in steering column harness, 30 cm from x200 connector)
J302 (in prp/uf2 harness, 15 cm from rear fuse block)
J303 (in prp/uf2 harness, 8 cm from rear fuse block)
Key-in switch
Left front access panel relay
Left rear access panel relay
Off
Panel actuator fuse 3 15a
Passenger air bag disable indicator
Pnk
Rear fuse block (on left "b" pillar)
Red
Right rear access panel relay
Run
Run/crnk relay 15
Start
Steering wheel speed/ angle sensor
Stop lamp switch
Str/whl snsr fuse 29 (w/ active brake control) 10a
To splice j115 (diagram 5 of 5)
To trans fuse 17 (diagram 5 of 5)
Underhood fuse block (on left side of engine compt)
W/ cargo lamp
W/ manual suppression
W/o rv upfitter & manual suppression
X100
X200
X221
X318
X360

Power Distribution Wiring Diagram 4 of 5 for Chevrolet Express LT 2014 1500

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(in instrument panel harness, 15 cm from digital radio receiver breakout) j270
(not used)
6.6l
Air bag/aos fuse 10 10a
Air temperature actuator
Auxiliary air temperature door actuator (w/ rear a/c)
Auxiliary blower motor high speed relay
Auxiliary blower motor low speed relay
Auxiliary blower motor medium speed relay
Auxiliary hvac control processor (w/ rv upfitter & swb passenger)
Auxiliary mode actuator (w/ rear a/c)
Bck/up lamp pcb relay k7
Body control module (bcm)
Cargo door unlock relay
Chime alarm control module
Cmps fuse 19 10a
Compass module (if equipped)
Curtesy lamps provision relay
Digital radio receiver control module
Door lock relay
Door unlock relay
Driver door unlock relay
Driver seat adjuster switch (w/ driver power seat adjuster)
Driver window switch (if equipped)
Empty fuse
Evaporative emission system leak detection pump (6.6l)
From underhood fuse block (diagram 2 of 5)
Front auxiliary hvac control assembly
G302 (behind left kick panel)
Hvac 1 fuse 14 20a
Hvac 2 fuse 13 10a
Hvac cntrl fuse 25 10a
Hvac control assembly (w/ rear window defogger, power mirrors & manual a/c)
Hvac control switch assembly
Hvac controls switch assembly (w/ electric rear window defogger & power mirrors)
I/p cluster fuse 23 10a
Ign sw (dlis)/pk3 fuse 22 2a
Inflatable restraint front passenger system (pps) presence sensor (light duty w/o rv upfitter & manual supression switch)
Inflatable restraint sensing & diagnostic module (sdm)
Instrument cluster (w/o odometer security wiring provision (seo))
J247
J307 (in upfitter hvac control harness, 88 cm from x303 breakout)
J405
J412 (in rear hvac harness, 20 cm from auxiliary blower motor connector breakout)
Manual a/c w/ power mirrors & rear window defogger
Onstar fuse 11 10a
Osrvm sw fuse 9 5a
Outside rearview mirror switch (if equipped)
Passenger compartment fuse block
Passenger seat adjuster switch (w/ passenger power seat adjuster)
Passenger window switch (if equipped)
Prk lamps relay k3
Pwr seats circuit breaker 1 30a
Pwr windows circuit breaker 2 25a
Radio
Rap relay k6
Rdo/chime fuse 20 15a
Rear auxiliary hvac control assembly
Rear blwr fuse 29 30a
Rear defog relay k5 (w/ power mirror & electric rear window defogger)
Remote control door lock receiver (rcdlr) (w/ low tire pressure & remote keyless entry)
Rfa/tpm fuse 21 10a
Rollover sensor
Run relay k1
To ignition power provision relay (diagram 1 of 5)
To splice j203 (diagram 3 of 5)
To splice j302 (diagram 3 of 5)
Upfitter aux 1 fuse 16 (w/ cutaway, ambulance & rv upfitters) 50a
Vehicle telematics communication interface module (vcim) (if equipped)
W/ chime module
W/ commercial tradesman
W/ cutaway
W/ digital audio
W/ rear a/c
W/ rear a/c & auxiliary heater
W/ rear a/c, auxiliary heater, plumbing & wiring provision
W/ rv upfitter
W/ uys
W/o chime module
W/o digital audio
W/o rv upfitter
W/o uys
X100
X200
X205
X222
X306
X307
X321
X407
X409
X420
X500
X600

Power Distribution Wiring Diagram 5 of 5 for Chevrolet Express LT 2014 1500

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(diagram 2 of 5)
(in engine harness, 15 cm from x101 breakout) j115
(in lpg chassis harness, 13 cm from lpg control module) j361
(in lpg chassis harness, 13 cm from primary fuel pump relay) j364
(in lpg chassis harness, 7.5 cm from primary fuel pump relay) j363
(in lpg chassis harness, 7.5 cm from scavenge fuel pump relay) j366
(in lpg chassis harness, 7.5 cm from scavenge red
(in lpg chassis harness, 7.5 cm from secondary fuel pump relay) j367
(in lpg main harness,
(in lpg main harness, first splice from battery positive ring terminal circuit) j167
(in lpg main harness, near wait to start lamp relay) j168
(or red)
1-2 shift solenoid (ss) valve
2-3 shift solenoid (ss) valve
3 tank complete vehicle kit
4 speed
4 tank complete vehicle kit
4.3l
4.8l, 5.3l & 6.0l
6 speed a/t
6.6l
At breakout of battery positive voltage to lpg bypass solenoid relay) j172
Automatic transmission
Automatic transmission assembly
Control solenoid valve assembly
Ecm ign/ glow plug mdl ign fuse 30 15a
Engine control module (ecm)
Evaporative emission purge solenoid valve relay
Evaporative emission system leak detection pump
Evaporative emission vent solenoid valve relay
Except 6.6l
From body control h module (bcm) (diagram 3 of 5)
From fscm j ign fuse 6 (diagram 3 of 5)
From underhood fuse block l
Fuel injector control module
Fuel pump relay) j365
Fuse holder
Glow plug control module (gpcm)
Inside rearview mirror
Isrvm/ rvcm fuse 10 15a
J135
J169
J170 (in lpg main harness, at breakout of battery positive voltage to lpg bypass solenoid relay & vacuum pump)
J171 (in lpg main harness, at breakout of battery positive voltage to lpg control module & resistor)
J173
J174
J334
Lpcm fuse 20a
Lpcm fuse 30a
Lpg bypass solenoid valve relay
Lpg control module
Lpg tank scavange pump relay
M pnk
Nca
Petroleum & gas
Pnk
Primary fuel pump relay
Rearview camera
Red
Secondary fuel pump relay
Tcm ign fuse 31 15a
Torque converter clutch (tcc) enable solenoid valve
Torque converter clutch (tcc) pressure assembly control solenoid valve
Trans fuse 17 15a
Transmission control module (tcm)
Transmission input shaft speed (iss) sensor
Underhood fuse block (on left side of engine compt)
W/ 4 speed a/t
W/ 6 speed a/t
Wait to start indicator relay
X101
X107
X174
X329
X403

Power Door Locks Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Cargo door unlock relay
Cargo dr unlck fuse 33 15a
Chime module (behind left center of dash)
Closed sw sig
Computer data lines system
Door lock relay
Door unlock relay
Driv door lock rly
Driv door lock sig
Driv door unlock sig
Driver door unlatch relay
Dvr dr unlck fuse 36 15a
Frt dr lck fuse 31 15a
Frt pass dr unlck fuse 34 15a
G100 (on left front of engine compt)
G302 (behind left kick panel)
G347
G348
Ground
Hood ajar switch (w/ remote engine start)
Hot at all times
J100
J247
J248
Left rear side door jam switch (w/ hinged door) (at left "b" pillar)
Lf door ajar sw
Lf door open sw
Liftgate ajar sw sig
Lo spd
Lo spd gmlan serial data x3
Lr door open sw
Mega fuse 125a
Nca
Pass door lock sw
Radio
Rear dr lck fuse 32 15a
Rear open sw
Rear pass dr unlck fuse 35 15a
Remote control door lock receiver (rcdlr) (behind center of dash)
Rf door ajar sw
Rf door open sw
Rfa/tpm fuse 21 10a
Right rear side door jam switch (w/ cargo passenger) (at right "b" pillar)
Rr door open sw
Serial data
Serial data bus +
Serial data bus -
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Sw sig
Tan
Underhood fuse block (on left side of engine compt)
W/ commercial tradesman
W/ hinged door
W/o commercial tradesman
X150
X318

Power Door Locks Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(in body harness, 40 cm from x306 breakout)
(in body harness, near front passenger seat, 20 cm from x306)
(in right front door harness, 5 cm from passenger outside rearview mirror breakout)
A11
B11
C10
C11
C12
Cargo door latch assembly (w/ cargo/passenger) (in right rear cargo door)
Cargo/ passenger
Computer data lines system
Cutaway
Driver door latch assembly (at rear of driver door)
Driver door lock switch
Driver information center (dic) display
G347
G348
G401 (on top of right "d" pillar)
Instrument cluster (ipc)
J322
J323
J501 (w/ electronic side door lock control)
J601 (w/ electronic side door lock control)
J901 (w/ electronic side door lock control) (in rear cargo door harness, 35 cm from x902)
Left body sliding door jamb contact plate (at left "b" pillar)
Left rear side door lock actuator (w/ left rear hinged side door & rear sliding side door) (rear of left door)
Logic
Low spd gmlan serial data
Passenger door latch assembly (at rear of front passenger door)
Passenger door lock switch
Rear cargo door lock switch
Right body sliding door jamb contact plate (at right "b" pillar)
Right rear side door lock actuator (w/ rear hinged side door & rear sliding side door) (hinged: at left side of right door)
Security indicator
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Tan
W/ hinged door
W/ hinged doors
W/ sliding doors
X318
X400
X500
X600

Power Mirrors Wiring Diagram for Chevrolet Express LT 2014 1500

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Body fuse block (under left front seat)
Connector)
Defogger system
Driver
Driver outside rearview mirror (in driver door)
Exterior lights system
G347
Hot at all times
J500
Nca
Osrvm sw fuse 9 5a
Outside rearview mirror switch
Passenger
Passenger outside rearview mirror (in right front passenger door)
R/l
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Up/dn
X500
X500 d7
X600

Power Seats Wiring Diagram for Chevrolet Express LT 2014 1500

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All- down
All-up
Back
Body fuse block (under left front seat)
Down
Driver seat adjuster motor assembly
Driver seat adjuster switch
Entire seat
For- ward
Front down
Front up
Front vertical
G347
G348
Horizontal
Hot at all times
Nca
Passenger seat adjuster motor assembly
Passenger seat adjuster switch
Pwr seats circuit breaker 30a
Rear down
Rear up
Rear vertical
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Tan
X306
X306 h
X307
X307 d

Power Windows Wiring Diagram for Chevrolet Express LT 2014 1500

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B4 tan
Body control module (behind lower right side of dash)
Driver window motor (in driver door)
Driver window switch
G302 (behind left kick panel)
G347
G348
Hot at all times
Ign volt
Interior lights system
J247
J500
J600
Left
Passenger compartment fuse block
Passenger window motor (in front passenger door)
Passenger window switch
Pwr wdo circuit breaker 2 25a
Rap relay k6
Right
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Tan
Tan d4
X500
X600

Radio Wiring Diagram with UYS 1 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
(w/ vehicle communication system) j271 (w/o vehicle communication system) j248
Antenna
Antenna in
Anti-lock brakes system
Body fuse block (under left front seat)
Camera sig +
Camera sig -
Coax
Computer data lines system
G4 x1
Gnd
Hot at all times
Interior lights system
Led dimming ctrl
Lf mid out (+)
Lf mid out (-)
Lo ref
Lo serial data
Low ref
Lr mid out (+)
Lr mid out (-)
Navigation antenna
Navigation system
Pnk
Radio
Rdo/ chime fuse 20 15a
Rf mid out (+)
Rf mid out (-)
Rr mid out (+)
Rr mid out (-)
Tan
Usb cable
Usb receptacle
Vehicle spd sig
Voice sig
X10
X318

Radio Wiring Diagram with UYS 2 of 2 for Chevrolet Express LT 2014 1500

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(in body harness, 10 cm from x415 breakout) j451
(in body harness, 10 cm from x419 breakout) j450
(not used)
(or pnk)
(or pnk) e
12v ref
A11
Antenna in
B12
Bare
Body control module (bcm) (behind lower right side of dash)
C12
Cellular phone & navigation antenna
Coax
Computer data lines system
Cruise control system
Cutaway, upfitter
Drain wire
Hi spd gmlan serial data bus (+)
Hi spd gmlan serial data bus(-)
Info
J452 (in body harness, 46 cm from x417 breakout)
J453 (in body harness, 52 cm from x417 breakout)
Left front door speaker
Left rear cargo door speaker
Left rear trim panel speaker (if equipped)
Lo gmlan serial data
Lo ref
Mute
Passenger/ cargo
Pnk
Right front door speaker
Right rear cargo door speaker
Right rear trim panel speaker (if equipped)
Right steering wheel control switch
Seek down
Seek up
Source
Steering wheel air bag coil
Steering wheel ctrl
Tan
Telematics communication interface control module (under driver knee bolster panel)
Voice sig
Vol down
Vol up
W/ ambulance/ rv upfitters
X200
X320
X400
X411
X415
X500
X600

Radio Wiring Diagram without UYS 1 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
(w/ vehicle communication system) j271 (w/o vehicle communication system) j248
Antenna
Antenna in
Anti-lock brakes system
Bare
Body fuse block (under left front seat)
Camera sig +
Camera sig -
Cellular phone & navigation antenna
Coax
Computer data lines system
Drain wire
Gnd
Hi spd gmlan serial data bus (+)
Hi spd gmlan serial data bus(-)
Hot at all times
Interior lights system
J270
Led dimming ctrl
Lf mid out (+)
Lf mid out (-)
Lh audio sig (+)
Lh audio sig (-)
Lo ref
Lo serial data
Lr mid out (+)
Lr mid out (-)
Navigation antenna
Navigation system
Radio
Rdo/ chime fuse 20 15a
Rf mid out (+)
Rf mid out (-)
Rh audio sig (+)
Rh audio sig (-)
Rr mid out (+)
Rr mid out (-)
Spd sig
Tan
Telematics communication interface control module (under driver knee bolster panel)
Usb cable
Usb receptacle
Voice sig
X1 g4
X10
X318

Radio Wiring Diagram without UYS 2 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g302
(in body harness, 10 cm from x415 breakout) j451
(in body harness, 10 cm from x419 breakout) j450
(not used)
(or pnk)
(or pnk) e
12v ref
A11
Antenna in
B12
Bare
Batt positive volt
Body control module (bcm) (behind lower right side of dash)
C12
Cellular phone & digital radio antenna
Coax
Computer data lines system
Cruise control system
Cutaway, upfitter
Digital radio receiver (left side of dash)
Drain wire
Gnd
Info
J271
J452 (in body harness, 46 cm from x417 breakout)
J453 (in body harness, 52 cm from x417 breakout)
Left front door speaker
Left rear cargo door speaker
Left rear trim panel speaker (if equipped)
Lh audio sig (+)
Lh audio sig (-)
Lo gmlan serial data
Lo spd gmlan serial data
Mute
Passenger/ cargo
Pnk
Rh audio sig (+)
Rh audio sig (-)
Right front door speaker
Right rear cargo door speaker
Right rear trim panel speaker (if equipped)
Right steering wheel control switch
Seek down
Seek up
Source
Steering wheel air bag coil
Steering wheel ctrl
Tan
Vol down
Vol up
W/ ambulance/ rv upfitters
X200
X320
X400
X411
X415
X500
X600

Shift Interlock Wiring Diagram for Chevrolet Express LT 2014 1500

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(+)
(-)
5.3l
6.6l
6.6l 4.8l & 6.0l 4.3l
Automatic transmission (4 speed a/t)
Automatic transmission (6 speed a/t)
Automatic transmission internal mode switch (ims)
Bcm-2 fuse 58 10a
Body control module (bcm) (behind lower right side of dash)
Brake pedal position sensor (top of brake pedal assembly)
Brake pos low ref
Brake pos sen sig
Brk b+
Computer data lines system
Control solenoid valve assembly
Engine control module (ecm) (left side of engine compt)
Fuel tem sig
G103 (4.3l: left rear of engine) (5.3l: on right rear of engine)
G302 (behind left kick panel)
Gm lan hi spd
Gnd
Hi spd ser data (+)
Hi spd ser data (-)
Hi spd ser data +
Hi spd ser data -
Hot at all times
J101
J264
Low ref
P/n sig
Park/neutral position (pnp) switch
Sol ctrl
Tan
Transmission control module (tcm)
Transmission shift lock control solenoid actuator (on right side of steering column)
Underhood fuse block (on left side of engine compt)
X101
X103
X107
X174
X200
X3 k3

4 3L VIN X Charging Wiring Diagram for Chevrolet Express LT 2014 1500

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(on right front of engine compt) g106
4.3l
4.3l/5.3l
4.8l/6.0l
5v ref
A1 x3
Battery
Battery current sensor (4.3l/5.3l)
Body control module (bcm) (behind lower right side of dash)
Charge ind
Computer data lines system
Current sensor sig
Data bus (+) x1
Data bus (-)
Driver information center (dic) display
Engine control module (ecm)
Except 4.3l
Fusible link 3
G104 (right side of engine)
G105 (on right front frame rail, in engine compt)
Generator
Generator field duty cycle sig
Generator turn on sig x2
Gmlan serial data
Hot w/ run/crank relay 15 energized
Ign volt
Instrument panel cluster (ipc)
Ipc fuse 10a
Logic
Low ref
Low speed gmlan serial data
Pnk
Power distribution system
Red
Starting circuit
Tan
Underhood fuse block (on left side of engine compt)
X100

4 3L VIN X Starting Wiring Diagram for Chevrolet Express LT 2014 1500

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4.3l
4.3l & 5.3l
4.8l & 6.0l
Automatic transmission assembly
Automatic transmission internal mode switch (ims)
Battery
Battery current sensor
Body control module (bcm) (behind lower right side of dash)
Charging circuit
Computer data lines system
Control solenoid valve assembly
Crnk relay 39
Data bus (+)
Data bus (-)
Engine control module (ecm)
Except 4.3l
Fusible link 2
G102 (except 4.3l: on left rear of engine) (4.3l: right rear of engine)
G103 (except 4.3l: on right rear of engine) (4.3l: left rear of engine)
G104 (right side of engine)
G105 (on right front frame rail, in engine compt)
G106 (on right front of engine compt)
Gmlan serial data
Ignition switch
Ignition voltage
J101
J102
Nca
Off
Park/ neutral/ signal
Park/neutral position (pnp) switch
Pnk
Red
Run acc
Start
Starter enable relay ctrl
Starter motor
Strtr sol fuse 40a
Tan
Transmission control module (tcm)
Underhood fuse block (on left side of engine compt)
X175
X200 c1

5 3L VIN 4 Charging Wiring Diagram for Chevrolet Express LT 2014 1500

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(on right front of engine compt) g106
4.3l
4.3l/5.3l
4.8l/6.0l
5v ref
A1 x3
Battery
Battery current sensor (4.3l/5.3l)
Body control module (bcm) (behind lower right side of dash)
Charge ind
Computer data lines system
Current sensor sig
Data bus (+) x1
Data bus (-)
Driver information center (dic) display
Engine control module (ecm)
Except 4.3l
Fusible link 3
G104 (right side of engine)
G105 (on right front frame rail, in engine compt)
Generator
Generator field duty cycle sig
Generator turn on sig x2
Gmlan serial data
Hot w/ run/crank relay 15 energized
Ign volt
Instrument panel cluster (ipc)
Ipc fuse 10a
Logic
Low ref
Low speed gmlan serial data
Pnk
Power distribution system
Red
Starting circuit
Tan
Underhood fuse block (on left side of engine compt)
X100

5 3L VIN 4 Starting Wiring Diagram for Chevrolet Express LT 2014 1500

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4.3l
4.3l & 5.3l
4.8l & 6.0l
Automatic transmission assembly
Automatic transmission internal mode switch (ims)
Battery
Battery current sensor
Body control module (bcm) (behind lower right side of dash)
Charging circuit
Computer data lines system
Control solenoid valve assembly
Crnk relay 39
Data bus (+)
Data bus (-)
Engine control module (ecm)
Except 4.3l
Fusible link 2
G102 (except 4.3l: on left rear of engine) (4.3l: right rear of engine)
G103 (except 4.3l: on right rear of engine) (4.3l: left rear of engine)
G104 (right side of engine)
G105 (on right front frame rail, in engine compt)
G106 (on right front of engine compt)
Gmlan serial data
Ignition switch
Ignition voltage
J101
J102
Nca
Off
Park/ neutral/ signal
Park/neutral position (pnp) switch
Pnk
Red
Run acc
Start
Starter enable relay ctrl
Starter motor
Strtr sol fuse 40a
Tan
Transmission control module (tcm)
Underhood fuse block (on left side of engine compt)
X175
X200 c1

Supplemental Restraints Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g301
(in body harness, pnk 28 cm from seat belt buckle driver x2 connector breakout) j320
(on passenger's seat harness, near breakout for seat adjuster switch) (light duty w/o manual suppression switch & rv/upfitter) inflatable restraint front passenger presence system (pps) sensor
(w/ manual suppression switch) passenger airbag disable switch
A x306
Air bag fuse 10a
Air bag off ind
Air bag on ind
Air bag/ aos fuse 10a
B pnk
B2 x318
Batt
Body fuse block (under left front seat)
Computer data lines system
Driver seat belt switch driver seat belt buckle
Frt prk lamps fuse 10a
G301 (behind left kick panel)
Ground
Heavy duty
Hi ctrl
Hot at all times
Hot w/ prk lamps relay k3 energized
Hot w/ run/ crank relay 15 energized
Ign
Inflatable restraint sensing & diagnostic module (sdm) (under left front seat)
Interior lights system
Ipc fuse 10a
J265
L hi ctrl
L lo ctrl
L seat belt sw
Lf sensing mod sig
Light duty
Lo ctrl
Lo spd gmlan seria
Logic
Low reference
Low spd
Lr sensing mod sig
Passenger seat belt buckle (w/o manual suppression switch & rv/upfitter)
Passenger seat belt switch
Pin shorting bars engaged when module connector is disconnected from harness (shorting bars are connected between pins: 4-5, 6-7, 8-9, 10-11, 12-13, 14-15, 22-23, 24-25 & 26-27)
Pnk
Pnk a
R hi ctrl
R lo ctrl
R seat belt sw
Red
Rf sensing mod sig
Rollover hi sig
Rr hi ctrl
Rr lo ctrl
Rr sensing mod sig
Sens sig
Shorting bar
Stage 1
Stage 2
Steering wheel air bag
Steering wheel air bag (light duty)
Steering wheel air bag coil
Suppression ind ctrl
Sw sig
Tan
Underhood fuse block (on left side of engine compt)
W/ manual suppression switch
W/o manual suppression switch & rv/upfitter
X306
X307
X318
X330

Supplemental Restraints Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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(behind left kick panel) g301
(w/o manual suppression switch & rv/upfitter) passenger airbag disable indicator
A10
Air bag ind
Air bag off ind
Air bag on ind
B10
Batt
Computer
Computer data lines system
Data lines
Driver seat belt buckle pretensioner (light duty)
Front impact sensor
G302 (behind left kick panel)
Gnd
Heavy duty
Hi sig
Ign
Instrument panel cluster (ipc)
J244
J248
J265
Left front roof rail air gag (left side of headliner)
Left front side impact sensor (in the left front side door)
Left rear side impact sensor (left center of vehicle behind body panel trim)
Light duty
Lo spd
Logic
Nca
Panel air bag (light duty)
Passenger
Passenger instrument
Passenger instrument panel air bag
Passenger seat belt buckle pretensioner (light duty)
Pnk
Right front roof rail air bag
Right front side impact sensor (in the right front side door)
Right rear roof rail air bag
Right rear side impact sensor (in the lower right side of vehicle, near rear side door)
Rollover sensor
Seat belt ind
Shorting bar
Stage 1
System
W/ rear hinged door
W/ rear sliding door
X104
X324
X331
X500
X501
X600
X601

Transmission Wiring Diagram 1 of 2 for Chevrolet Express LT 2014 1500

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1-2 shift sol
2-3 shift sol
Acc wakeup data
Automatic transmission (a/t) output shaft speed (oss) sensor
Batt pos volt
Brk sw fuse 13 10a
Brk sw sig
Computer data lines system
G103 (4.3l: left rear of engine) (5.3l: on right rear of engine)
Gnd
Hi spd gmlan data (+)
Hi spd gmlan data (-)
Hot at all times
Hot w/ run/crnk relay 15 energized
Ign volt
Iss sig
J101
J123 (in engine harness, 16 cm from underhood fuse block x1 breakout)
Low ref
Pc sol hi
Pc sol low
Pnk
Replicated tos sig
Stop lamp switch (behind left side of dash, above brake pedal)
Tan
Tcc pwm
Tcc sol valve ctrl
Tcm batt fuse 32 10a
Tcm ign fuse 31 15a
Tft sens sig
Tr sw a sig
Tr sw b sig
Tr sw c sig
Tr sw p sig
Trans fuse 17 15a
Transmission control module (tcm)
Underhood fuse block (on left side of engine compt)
Vss hi sig
Vss low sig
X221

Transmission Wiring Diagram 2 of 2 for Chevrolet Express LT 2014 1500

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1-2 shift solenoid (ss) valve
2-3 shift solenoid (ss) valve
4.3l
5.3l
Automatic transmission
Automatic transmission fluid temperature (tft) sensor
Automatic transmission input shaft speed (iss) sensor
Body control module (bcm) (behind lower right side of dash)
Computer data lines system
Ctrl mil
Engine control module (ecm)
G103 (4.3l: left rear of engine) (5.3l: on right rear of engine)
G302 (behind left kick panel)
Hi spd gmlan +
Hi spd gmlan -
Ind mil
Instrument panel cluster
J135
J248
Lo gm gmlan
Logic
Mil ctrl
Nca
Park/neutral position (pnp) switch
Park/neutral signal
Pnk
Pressure control (pc) solenoid valve
Prnd321
Red
Replicated tos sig
Tan
Torque converter clutch (tcc) pressure control solenoid valve
Torque converter clutch (tcc) solenoid valve
Tow/ haul ind
Tow/haul sw sig
Tow/haul switch
X100

Access Panel Release Wiring Diagram for Chevrolet Express LT 2014 1500

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Access panel left side front relay control
Access panel left side rear relay control
Access panel right side rear relay control
Body control module (behind lower right side of dash)
G403 (on center of left "d" pillar)
Hot at all times
J300
J303
J309 (in prp/uf2 harness, between left side front access panel actuators)
J408 (in prp/uf2 harness, between left side rear access panel actuators)
J409 (in prp/uf2 harness, 88 cm from right dome fluorescent work lamp connector breakout)
Left front access panel relay
Left front side front access panel actuator (behind left front access panel)
Left front side rear access panel actuator (behind left front access panel)
Left rear access panel relay
Left rear side front access panel actuator (behind left rear access panel)
Left rear side rear access panel actuator (behind left rear access panel)
Panel actuator fuse 15a
Pnk
Rear body fuse block (on left "b" pillar)
Right rear panel relay
Right side front access panel actuator (behind right front access panel)
Right side rear access panel actuator (behind right rear access panel)
Tan

Warning Systems Wiring Diagram for Chevrolet Express LT 2014 1500

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(4.3l: left rear of engine 4.8l, 5.3l & 6.0l: on right rear of engine 6.6l: left front lower side of engine block)
(behind left kick panel) g302
Acc
Air bag fuse 10a
Alarm enable sig
Auto
Battery
Body control module (bcm) (behind lower right side of dash)
Body fuse block (under left front seat)
Brake booster fluid flow alarm switch (w/ brake warning indicator) (in power steering pump outlet hose)
Brake booster fluid pressure alarm switch (w/ brake warning indicator) (in power steering pump inlet hose)
Brake fluid level switch
Brake pressure differential switch
Brake warn ind ctrl
C12
Chime module (w/o radio) (behind left center of dash)
Computer data lines system
Driver door latch assembly (at rear of driver door)
Driver information center (dic) display
Driver seat belt buckle
Driver seat belt switch
E9 x200
G103
G300 (on left frame rail, near ebcm)
G302 (behind left kick panel)
G347
G347 (on bottom of left "b" pillar)
G348
Ground
Hazard sw left sig
Hazard sw right sig
Hazard switch
Hazard warning switch
Head
Headlamp & panel dimmer switch
Headlamp sw off sig
Heavy duty
Hot at all times
Hot w/ run/crank relay 15 energized
Ign sw (dlis)/pk3 fuse 20a
Ign volt
Ignition key switch
Ignition switch
Inflatable restraint sensing & diagnostic module (sdm) (under left front seat)
Instrument panel cluster (ipc)
J101
J202
J203
J244
J248
J315
J320 (in body harness, 28 cm from seat belt buckle driver x2 connector breakout)
J501 (w/ electric side door lock control)
J601 (w/ electronic side door lock control)
Jx347
Left rear door jamb switch (w/ left rear hinged door) (at left "b" pillar)
Left turn
Lf dr ajar sw sig
Lh seat belt sw
Light duty
Logic
Low oil pressure ind
Low ref
Lr dr open sw sig
Off
Park
Park brake switch
Park brk sw sig
Park lamp signal
Passenger air bag ind
Passenger airbag disable indicator (w/o manual suppression switch & rv upfitter)
Passenger door latch assembly (at rear of front passenger door)
Passenger seat belt buckle (w/o manual suppression switch & rv upfitter)
Passenger seat belt ind
Passenger seat belt switch
Pnk
Pnk d
Radio
Rdo/chime fuse 15a
Red
Rf dr ajar sw sig
Rh seat belt sw
Right rear door jamb switch (cargo/ passenger) (at right "b" pillar)
Right turn
Rr dr open sw sig
Run
Seat belt ind
Sens sig
Serial data
Splice block jx347 (in body harness, attached to lower left "b" pillar)
Splice block jx348 (in body harness, attached to lower right "b" pillar part of g348)
Start
Switch & rv upfitter
Tan
Tire pressure ind
Underhood fuse block (on left side of engine compt)
W/ manual suppression switch
W/o manual suppression
X100
X101
X141
X200
X220
X306
X306 c
X307
X318
X500
X600

Wiper Washer Wiring Diagram for Chevrolet Express LT 2014 1500

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Batt (+) volt
Bcm 1 fuse 10a
Body control module (bcm) (behind lower right side of dash)
E11
E12 x200
Front windshield wiper switch hi signal
G102 (4.8l, 5.3l & 6.0l: on left rear of engine) (6.6l: left front lower side of the engine block) (4.3l: right rear of engine)
G302 (behind left kick panel)
Hot at all times
Int
J102
J247
J248
Low reference
Mist
Off
Pnk
Tan
Turn signal/ multi-function switch
Underhood fuse block (on left side of engine compt)
Windshield washer fluid pump (on left front of engine compt, at washer reservoir)
Windshield washer pump relay
Windshield washer relay control
Windshield washer switch signal
Windshield wiper motor (on left side of firewall)
Windshield wiper motor park switch signal
Windshield wiper relay
Windshield wiper speed control relay
Windshield wiper switch hi signal
Windshield wiper switch low signal
Windshield wiper switch signal 2
Wpr fuse 25a
Wsw fuse 15a
X100
X3 k

All Wiring Diagrams for Chevrolet Express LT 2014 1500 model

AIR CONDITIONING

Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Express LT 2014 1500

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Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Express LT 2014 1500

List of elements for Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Express LT 2014 1500:

Manual A/C Wiring Diagram, Cargo Van (3 of 3) for Chevrolet Express LT 2014 1500

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Manual A/C Wiring Diagram, Passenger Van (1 of 3) for Chevrolet Express LT 2014 1500

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Manual A/C Wiring Diagram, Passenger Van (2 of 3) for Chevrolet Express LT 2014 1500

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Manual A/C Wiring Diagram, Passenger Van (3 of 3) for Chevrolet Express LT 2014 1500

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Rear A/C Wiring Diagram, Provisions for Chevrolet Express LT 2014 1500

List of elements for Rear A/C Wiring Diagram, Provisions for Chevrolet Express LT 2014 1500:

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram, with JL4 (1 of 2) for Chevrolet Express LT 2014 1500

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Anti-lock Brakes Wiring Diagram, with JL4 (2 of 2) for Chevrolet Express LT 2014 1500

List of elements for Anti-lock Brakes Wiring Diagram, with JL4 (2 of 2) for Chevrolet Express LT 2014 1500:

Anti-lock Brakes Wiring Diagram, without JL4 for Chevrolet Express LT 2014 1500

List of elements for Anti-lock Brakes Wiring Diagram, without JL4 for Chevrolet Express LT 2014 1500:

ANTI-THEFT

Forced Entry Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500

List of elements for Forced Entry Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500:

Forced Entry Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500

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Pass-Key Wiring Diagram for Chevrolet Express LT 2014 1500

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BODY CONTROL MODULES

Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500

List of elements for Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500:

Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500

List of elements for Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500:

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500

List of elements for Computer Data Lines Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500:

Computer Data Lines Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500

List of elements for Computer Data Lines Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500:

CRUISE CONTROL

Cruise Control Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500

List of elements for Cruise Control Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500:

Cruise Control Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500

List of elements for Cruise Control Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500:

DEFOGGERS

Defoggers Wiring Diagram for Chevrolet Express LT 2014 1500

List of elements for Defoggers Wiring Diagram for Chevrolet Express LT 2014 1500:

ENGINE PERFORMANCE

4.3L VIN X

4.3L VIN X, Engine Performance Wiring Diagram (1 of 3) for Chevrolet Express LT 2014 1500

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4.3L VIN X, Engine Performance Wiring Diagram (2 of 3) for Chevrolet Express LT 2014 1500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 3) for Chevrolet Express LT 2014 1500:

4.3L VIN X, Engine Performance Wiring Diagram (3 of 3) for Chevrolet Express LT 2014 1500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 3) for Chevrolet Express LT 2014 1500:

5.3L VIN 4

5.3L VIN 4, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Express LT 2014 1500

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Express LT 2014 1500:

5.3L VIN 4, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Express LT 2014 1500

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Express LT 2014 1500:

5.3L VIN 4, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Express LT 2014 1500

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Express LT 2014 1500:

5.3L VIN 4, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Express LT 2014 1500

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Express LT 2014 1500:

5.3L VIN 4, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Express LT 2014 1500

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Express LT 2014 1500:

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram for Chevrolet Express LT 2014 1500

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Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet Express LT 2014 1500

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Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet Express LT 2014 1500

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Trailer Tow Wiring Diagram for Chevrolet Express LT 2014 1500

List of elements for Trailer Tow Wiring Diagram for Chevrolet Express LT 2014 1500:

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 5) for Chevrolet Express LT 2014 1500

List of elements for Ground Distribution Wiring Diagram (1 of 5) for Chevrolet Express LT 2014 1500:

Ground Distribution Wiring Diagram (2 of 5) for Chevrolet Express LT 2014 1500