Diagram sections — 28 (78 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS NAVIGATION POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Express G2013 1500 List of elements for Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Express G2013 1500: 46 (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 G2013 1500 List of elements for Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Express G2013 1500: 56 (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 G2013 1500 List of elements for Manual A/C Wiring Diagram, Cargo Van (3 of 3) for Chevrolet Express G2013 1500: 44 (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 G2013 1500 List of elements for Manual A/C Wiring Diagram, Passenger Van (1 of 3) for Chevrolet Express G2013 1500: 72 (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 G2013 1500 List of elements for Manual A/C Wiring Diagram, Passenger Van (2 of 3) for Chevrolet Express G2013 1500: 59 (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 G2013 1500 List of elements for Manual A/C Wiring Diagram, Passenger Van (3 of 3) for Chevrolet Express G2013 1500: 44 (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 G2013 1500 List of elements for Rear A/C Wiring Diagram, Provisions for Chevrolet Express G2013 1500: 15 (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 Anti-lock Brakes Wiring Diagram, with JL4 (1 of 2) for Chevrolet Express G2013 1500 List of elements for Anti-lock Brakes Wiring Diagram, with JL4 (1 of 2) for Chevrolet Express G2013 1500: 58 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 G2013 1500 List of elements for Anti-lock Brakes Wiring Diagram, with JL4 (2 of 2) for Chevrolet Express G2013 1500: 56 (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 G2013 1500 List of elements for Anti-lock Brakes Wiring Diagram, without JL4 for Chevrolet Express G2013 1500: 60 (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
ANTI-THEFT Forced Entry Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Forced Entry Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 59 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 G2013 1500 List of elements for Forced Entry Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 44 (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 G2013 1500 List of elements for Pass-Key Wiring Diagram for Chevrolet Express G2013 1500: 48 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 Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 56 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 G2013 1500 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 91 (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 Computer Data Lines Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Computer Data Lines Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 48 (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 G2013 1500 List of elements for Computer Data Lines Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 48 (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 Cruise Control Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Cruise Control Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 60 (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 G2013 1500 List of elements for Cruise Control Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 41 (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 Defoggers Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Defoggers Wiring Diagram for Chevrolet Express G2013 1500: 53 (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
ENGINE PERFORMANCE
4.3L VIN X 4.3L VIN X, Engine Performance Wiring Diagram (1 of 3) for Chevrolet Express G2013 1500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 3) for Chevrolet Express G2013 1500: 61 (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 G2013 1500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 3) for Chevrolet Express G2013 1500: 41 (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 G2013 1500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 3) for Chevrolet Express G2013 1500: 58 (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 5.3L VIN 4, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Express G2013 1500 List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Express G2013 1500: 65 (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 G2013 1500 List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Express G2013 1500: 56 (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 G2013 1500 List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Express G2013 1500: 40 (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 G2013 1500 List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Express G2013 1500: 35 (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 G2013 1500 List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Express G2013 1500: 46 (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
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Backup Lamps Wiring Diagram for Chevrolet Express G2013 1500: 62 (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 G2013 1500 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 83 (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 G2013 1500 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 66 (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 G2013 1500 List of elements for Trailer Tow Wiring Diagram for Chevrolet Express G2013 1500: 28 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 Ground Distribution Wiring Diagram (1 of 5) for Chevrolet Express G2013 1500 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Chevrolet Express G2013 1500: 74 (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 G2013 1500 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Chevrolet Express G2013 1500: 71 (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 G2013 1500 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Chevrolet Express G2013 1500: 90 (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 G2013 1500 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Chevrolet Express G2013 1500: 57 (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 G2013 1500 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Chevrolet Express G2013 1500: 80 (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 Headlights Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Headlights Wiring Diagram for Chevrolet Express G2013 1500: 62 (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 Horn Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Horn Wiring Diagram for Chevrolet Express G2013 1500: 21 (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 Instrument Cluster Wiring Diagram (1 of 3) for Chevrolet Express G2013 1500 List of elements for Instrument Cluster Wiring Diagram (1 of 3) for Chevrolet Express G2013 1500: 79 (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 G2013 1500 List of elements for Instrument Cluster Wiring Diagram (2 of 3) for Chevrolet Express G2013 1500: 48 (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 G2013 1500 List of elements for Instrument Cluster Wiring Diagram (3 of 3) for Chevrolet Express G2013 1500: 51 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
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 79 (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 G2013 1500 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 23 (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 G2013 1500 List of elements for Instrument Illumination Wiring Diagram for Chevrolet Express G2013 1500: 85 (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 Navigation Wiring Diagram, with UYS (1 of 2) for Chevrolet Express G2013 1500 List of elements for Navigation Wiring Diagram, with UYS (1 of 2) for Chevrolet Express G2013 1500: 38 (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 G2013 1500 List of elements for Navigation Wiring Diagram, with UYS (2 of 2) for Chevrolet Express G2013 1500: 53 (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 G2013 1500 List of elements for Navigation Wiring Diagram, without UYS (1 of 2) for Chevrolet Express G2013 1500: 47 (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 G2013 1500 List of elements for Navigation Wiring Diagram, without UYS (2 of 2) for Chevrolet Express G2013 1500: 58 (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 G2013 1500 List of elements for Parking Assistant Wiring Diagram for Chevrolet Express G2013 1500: 25 (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 G2013 1500 List of elements for Rear View Camera Wiring Diagram, with UYS for Chevrolet Express G2013 1500: 29 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 G2013 1500 List of elements for Rear View Camera Wiring Diagram, without UYS for Chevrolet Express G2013 1500: 36 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 Power Distribution Wiring Diagram (1 of 5) for Chevrolet Express G2013 1500 List of elements for Power Distribution Wiring Diagram (1 of 5) for Chevrolet Express G2013 1500: 92 (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 G2013 1500 List of elements for Power Distribution Wiring Diagram (2 of 5) for Chevrolet Express G2013 1500: 96 (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 G2013 1500 List of elements for Power Distribution Wiring Diagram (3 of 5) for Chevrolet Express G2013 1500: 51 (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 G2013 1500 List of elements for Power Distribution Wiring Diagram (4 of 5) for Chevrolet Express G2013 1500: 94 (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 G2013 1500 List of elements for Power Distribution Wiring Diagram (5 of 5) for Chevrolet Express G2013 1500: 75 (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 Power Door Locks Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Power Door Locks Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 59 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 G2013 1500 List of elements for Power Door Locks Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 44 (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 Power Mirrors Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Power Mirrors Wiring Diagram for Chevrolet Express G2013 1500: 20 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 Power Seats Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Power Seats Wiring Diagram for Chevrolet Express G2013 1500: 30 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 Power Windows Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Power Windows Wiring Diagram for Chevrolet Express G2013 1500: 26 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 Radio Wiring Diagram, with UYS (1 of 2) for Chevrolet Express G2013 1500 List of elements for Radio Wiring Diagram, with UYS (1 of 2) for Chevrolet Express G2013 1500: 38 (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 G2013 1500 List of elements for Radio Wiring Diagram, with UYS (2 of 2) for Chevrolet Express G2013 1500: 53 (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 G2013 1500 List of elements for Radio Wiring Diagram, without UYS (1 of 2) for Chevrolet Express G2013 1500: 47 (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 G2013 1500 List of elements for Radio Wiring Diagram, without UYS (2 of 2) for Chevrolet Express G2013 1500: 58 (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 Shift Interlock Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Shift Interlock Wiring Diagram for Chevrolet Express G2013 1500: 43 (+) (-) 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
STARTING/CHARGING
4.3L VIN X 4.3L VIN X, Charging Wiring Diagram for Chevrolet Express G2013 1500 List of elements for 4.3L VIN X, Charging Wiring Diagram for Chevrolet Express G2013 1500: 38 (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 G2013 1500 List of elements for 4.3L VIN X, Starting Wiring Diagram for Chevrolet Express G2013 1500: 43 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 5.3L VIN 4, Charging Wiring Diagram for Chevrolet Express G2013 1500 List of elements for 5.3L VIN 4, Charging Wiring Diagram for Chevrolet Express G2013 1500: 38 (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 G2013 1500 List of elements for 5.3L VIN 4, Starting Wiring Diagram for Chevrolet Express G2013 1500: 43 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 Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 70 (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 G2013 1500 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 53 (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 Transmission Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500 List of elements for Transmission Wiring Diagram (1 of 2) for Chevrolet Express G2013 1500: 40 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 G2013 1500 List of elements for Transmission Wiring Diagram (2 of 2) for Chevrolet Express G2013 1500: 37 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
TRUNK, TAILGATE, FUEL DOOR Access Panel Release Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Access Panel Release Wiring Diagram for Chevrolet Express G2013 1500: 24 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
WIPER/WASHER Wiper/Washer Wiring Diagram for Chevrolet Express G2013 1500 List of elements for Wiper/Washer Wiring Diagram for Chevrolet Express G2013 1500: 35 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
