Diagram sections — 27 (68 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 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 Compressor Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Compressor Wiring Diagram for Chevrolet Chevy Express G2006 3500: 30 2006: diesel A/c compressor clutch A/c fuse 32 10a A/c high pressure switch (rear of a/c compressor) A/c low pressure switch (on side of accumulator) A/c relay 54 Bi-lev Body fuse block (below left front seat) Clutch rly ctrl D12 Def F12 G102 (on left rear of engine) Gasoline Heat Heat/def Hot at all times Hot in run Hot in run or start Hvac control assembly Hvac fuse 10 20a Ign e fuse 22 10a Low press sig Max Norm Off Powertrain control module (pcm) (on left front inner fender) (gasoline) engine control module (ecm) (left side of engine compt) (2006: diesel) Request sig Underhood fuse block (on left side of engine compt) Vent Heater Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Heater Wiring Diagram for Chevrolet Chevy Express G2006 3500: 44 (bottom of left "b" pillar) g347 (left rear of passenger (rear a/c harn, 24 cm from rear blower motor resistor breakout) (rear hvac harn, 13 cm from auxiliary blower motor connector breakout) (rear hvac harn, 20 cm from auxiliary blower motor connector breakout) Air temperature actuator (behind right side of dash) Auxiliary blower motor (if equipped (left rear of passenger Auxiliary blower motor resistor (if equipped) (left rear of passenger Auxiliary blower motor switch (if equipped) Auxiliary high speed blower motor relay (if equipped) (left rear of passenger Auxiliary low speed blower motor relay (if equipped) Auxiliary medium speed blower motor relay (if equipped) (left rear of passenger Bi-lev Blow fuse 51 40a Blower motor (right rear of engine compt) Blower motor resistor assembly (right rear of engine compt) Body fuse block (below left front seat) Compt, on auxiliary hvac assembly) Def F10 G102 (on left rear of engine) G304 (behind right kick panel) G401 (top of right "d" pillar) Heat Heat/def Hot at all times Hot in run Hvac 1 fuse 9 10a Hvac control assembly Hvac fuse 20a Interior lights system Med Off Rr blower fuse 13 30a S102 (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout) S249 (dash harn, 5 cm from inflatable restraint dash module connector breakout) S401 (body harn, 16 cm from chmsl connector breakout) S405 S412 S413 Splice pack sp347 Tan Underhood fuse block (left side of engine compt) Vent Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Chevy Express G2006 3500 List of elements for Manual A/C Wiring Diagram, Cargo Van (1 of 3) for Chevrolet Chevy Express G2006 3500: 48 (behind right (behind right kick panel) g304 (dash harn, 5 cm from inflatable restraint dash module connector breakout) A/c high pressure switch Auxiliary air temperature actuator (left rear of passenger compt) Auxiliary mode actuator (left rear of passenger compt) Battery Bi-lev Blow fuse 51 40a Blower motor (right rear of engine compt) Blower motor resistor assembly (right rear of engine compt) Body fuse block (below left front seat) C2 a C2 c Def Defogger system F10 Front auxiliary hvac control assembly (if equipped) G102 (left front lower side of engine block) G102 (on left rear of engine) G347 (bottom of left "b" pillar) G401 (top of right "d" pillar) Ground Heat Heat/def Hot at all times Hot in run Hvac 1 fuse 9 10a Hvac control assembly Hvac fuse 20a Ing 3 Interior lights system Logic Max Med Norm Off R defog ind Reading lamp connector breakout) Rr blower fuse 13 30a S102 S249 S411 (rear hvac harn, 6 cm from auxiliary blower motor connector breakout) Side of dash) air temperature actuator Tan Underhood fuse block (left side of engine compt) Vacuum pump (right front of engine compt) (diesel) Vent Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Chevy Express G2006 3500 List of elements for Manual A/C Wiring Diagram, Cargo Van (2 of 3) for Chevrolet Chevy Express G2006 3500: 42 (left rear of passenger (on left rear of engine) (provisional) (rear hvac harn, 13 cm from auxiliary blower motor connector breakout) (top of right "d" pillar) g401 (w/ rv upfitter (w/ rv upfitter option: (w/ rv upfitter option: body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 41 cm from c304 breakout) A/c compressor clutch A/c fuse 32 10a A/c low pressure switch (on side of accumulator) A/c relay 54 Auxiliary blower motor (if equipped) (left rear of passenger Auxiliary blower motor resistor (if equipped) (left rear of passenger Auxiliary high speed blower motor relay (if equipped) (left rear of passenger Auxiliary low speed blower motor relay (if equipped) Auxiliary medium speed blower motor relay (if equipped) (left rear of passenger Body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 5 cm from c304 breakout) C319 Clutch rly ctrl Compt, on auxiliary hvac assembly) D12 Diesel F12 G102 Gasoline Hot at all times Hot in run or start Ign e fuse 22 10a Low press sig Option: body harn, 32 cm from c308 breakout) (w/o rv upfitter option: body harn, 31 cm from c304 breakout) Powertrain control module (pcm) (on left front inner fender) (gasoline) engine control module (ecm) (left side of engine compt) (diesel) Req sig S102 S308 S310 S311 S405 S411 S412 (rear hvac harn, 20 cm from auxiliary blower motor connector breakout) S413 (rear a/c harn, 24 cm from aux blower motor breakout) Underhood fuse block (left side of engine compt) Manual A/C Wiring Diagram, Cargo Van (3 of 3) for Chevrolet Chevy Express G2006 3500 List of elements for Manual A/C Wiring Diagram, Cargo Van (3 of 3) for Chevrolet Chevy Express G2006 3500: 26 (under left side of dash) data link connector (dlc) 5v ref Air temperature sensor Blower motor Combustion sensor Coolant heater (diesel) Coolant heater fuel pump Engine control module (ecm) (left side of engine compt) Engine controls system Foh/ecm/ tcm batt fuse 2 20a Fuel pump G400 (on inner left rear frame rail) Glow plug Grd Hot at all times Low ref Nca Red S402 Serial + Serial - Splice pack sp250 Tan Underhood fuse block (left side of engine compt) Volt Volt + Manual A/C Wiring Diagram, Passenger Van (1 of 3) for Chevrolet Chevy Express G2006 3500 List of elements for Manual A/C Wiring Diagram, Passenger Van (1 of 3) for Chevrolet Chevy Express G2006 3500: 58 (behind right (behind right kick panel) g304 (w/ rv upfitter option: (w/ rv upfitter option: in upfitter hvac control harn, 19 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 42 cm from c304 breakout) (w/ rv upfitter option: in upfitter hvac control harn, 64 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 11 cm from c304 breakout) (w/ rv upfitter option: in upfitter hvac control harn, 88 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 52 cm from c304 breakout) A/c high pressure switch Auxiliary hvac control processor (behind auxiliary hvac assembly, in headliner) Battery Bi-lev Blow fuse 51 40a Blower motor (right rear of engine compt) Blower motor resistor assembly (right rear of engine compt) Body fuse block (below left front seat) Breakout) C1 g C2 a C2 c Def Defogger system F10 Front auxiliary hvac control assembly G102 (left front lower side of engine block) G102 (on left rear of engine) G347 (bottom of left "b" pillar) Ground Heat Heat/def Hot at all times Hot in run Hvac 1 fuse 9 10a Hvac control assembly Hvac fuse 20a In upfitter hvac control harn, 39 cm from c303 breakout) (w/o rv upfitter option: in front headliner harn, 31 cm from c304 breakout) Ing 3 Interior lights system Logic Max Med Norm Off R defog ind Rear Rear auxiliary hvac control assembly Rr blower fuse 13 30a S102 S249 (dash harn, 5 cm from inflatable restraint dash module connector breakout) S305 S306 S307 S314 S354 Side of dash) air temperature actuator Tan Tan e Underhood fuse block (left side of engine compt) Vacuum pump (right front of engine compt) (diesel) Vent Manual A/C Wiring Diagram, Passenger Van (2 of 3) for Chevrolet Chevy Express G2006 3500 List of elements for Manual A/C Wiring Diagram, Passenger Van (2 of 3) for Chevrolet Chevy Express G2006 3500: 42 (4.3l vin x: engine harn, 6 cm from generator connector breakout) (except 4.3l vin x: engine harn, 8 cm from knock sensor breakout) (on left rear of engine) (provisional) (rear hvac harn, 13 cm from auxiliary blower motor connector breakout) s405 (w/ rv upfitter (w/ rv upfitter option: (w/ rv upfitter option: body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 41 cm from c304 breakout) A/c compressor clutch A/c fuse 32 10a A/c low pressure switch (on side of accumulator) A/c relay 54 Auxiliary air temperature actuator (left rear of passenger compt) Auxiliary blower motor (left rear of passenger compt) Auxiliary blower motor resistor (left rear of passenger Auxiliary high speed blower motor relay (left rear of passenger Auxiliary low speed blower motor relay (left rear of passenger Auxiliary medium speed blower motor relay (left rear of passenger Auxiliary mode actuator (left rear of passenger compt) Body harn, 22 cm from c308 breakout) (w/o rv upfitter option: body harn, 5 cm from c304 breakout) C319 Clutch rly ctrl c2 Compt, on auxiliary hvac assembly) D12 F12 G102 G401 (top of right "d" pillar) Gasoline diesel Hot at all times Hot in run or start Ign e fuse 22 10a Low press sig c2 Option: body harn, 32 cm from c308 breakout) (w/o rv upfitter option: body harn, 31 cm from c304 breakout) Powertrain control module (pcm) (on left front inner fender) (gasoline) engine control module (ecm) (left side of engine compt) (diesel) Request sig c2 S102 S308 S310 S311 S411 (rear hvac harn, 6 cm from auxiliary blower motor connector breakout) S412 (rear hvac harn, 20 cm from auxiliary blower motor connector breakout) S413 (rear a/c harn, 24 cm from auxiliary blower motor breakout) Underhood fuse block (left side of engine compt) Manual A/C Wiring Diagram, Passenger Van (3 of 3) for Chevrolet Chevy Express G2006 3500 List of elements for Manual A/C Wiring Diagram, Passenger Van (3 of 3) for Chevrolet Chevy Express G2006 3500: 26 (under left side of dash) data link connector (dlc) 5v ref Air temperature sensor Blower motor Combustion sensor Coolant heater (diesel) Coolant heater fuel pump Engine control module (ecm) (left side of engine compt) Engine controls system Foh/ecm/ tcm batt fuse 2 20a Fuel pump G400 (on inner left rear frame rail) Glow plug Grd Hot at all times Low ref Nca Red S402 Serial + Serial - Splice pack sp250 Tan Underhood fuse block (left side of engine compt) Volt Volt +
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhancement Stability (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhancement Stability (1 of 2) for Chevrolet Chevy Express G2006 3500: 69 (on left frame rail, near center of vehicle) 5v ref Abs/tcc switch Abs/tcs class 2 serial data Abs/vses fuse 48 60a Auxiliary 1 fuse 32 10a Battery (+) Body fuse block (under left front seat) Brake fluid level sw sig Brake in Brks fuse 11 10a C12 C7 a Control module (ebcm) Del torque Delivered torque signal E12 Electronic brake G300 (on left frame rail) Gnd Hot at all times Hot in run Hot in run or start Ign e fuse 22 10a Ignition 3 volt Lateral accelerometer sig Left front wheel speed sensor Left rear wheel speed sensor Lf wss sig Lf wss sig lo ref Lr wss sig Lr wss sig lo ref Nca Pnk Power distribution system Powertrain control module (pcm) (on left front of eng compt) Precharge motor hi Precharge motor lo Precharge pump (left front of frame rail) Red Req torque Request torque signal Rf wss sig lo ref Right front wheel speed sensor Right rear wheel speed sensor Rr wss sig Rr wss sig lo ref S315 Self test sig circuit Steering wheel pos sig a Steering wheel pos sig b Stop lamp switch (above brake pedal) Tan Tcc brake sw/cruise ctrl sig Traction ctrl pref sw sig Underhood fuse block (left side of engine compt) Vehicle speed sensor (vss) (right rear of transmission) Vehicle speed sig Vses motor Vss high Vss low Vss output Wheel pos marker pulse sig Wheel pos sens low ref Wheel pos sens sig 1 Yaw rate frequency Yaw rate sensor 5v ref Yaw rate sensor lo ref Yaw rate sensor sig Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhancement Stability (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Anti-lock Brakes Wiring Diagram, with Vehicle Speed Enhancement Stability (2 of 2) for Chevrolet Chevy Express G2006 3500: 37 (10 cm from underhood pass- through grommet breakout) sp200 5v ref Abs ind Brake fluid level switch (on brake master cylinder reservoir) Brake ind Brake pressure differential switch (on brake valve, near front of ebcm) Caution ind Data link connector (dlc) (under left side of dash) G102 (on left rear of engine) G303 (behind left kick panel) G304 (behind right kick panel) G400 (on inner left rear frame rail) Ground Heavy duty Hot in run or start Ign 3 voltage Instrument panel cluster Light duty Logic Low ref Not ready ind Pcm ign 1 fuse 38 15a Pnk S102 S248 S249 S402 Sensor self test sig cir Steering wheel pos marker pulse sig Steering wheel position sens sig 1 Steering wheel position sig a Steering wheel position sig b Steering wheel speed/ position sensor (near base of steering column) Traction control switch Underhood fuse block (left side of engine compt) Yaw & lateral acceleration sensor (under right front seat) Yaw rate frequency Anti-lock Brakes Wiring Diagram, without Vehicle Speed Enhancement Stability for Chevrolet Chevy Express G2006 3500 List of elements for Anti-lock Brakes Wiring Diagram, without Vehicle Speed Enhancement Stability for Chevrolet Chevy Express G2006 3500: 58 (diesel) (gasoline) (heavy duty) (left rear of engine) (light duty) (on left frame rail, near center of vehicle) electronic brake control module (ebcm) A10 Abs pump Abs/tcc sw Abs/vses fuse 48 60a Anti-lock ind B10 Body fuse block (below left front seat) Brake fluid level sw in Brake ind Brake input Brake pressure differential switch (light duty) (on brake valve, near front of ebcm) brake fluid level switch (heavy duty) (on brake master cylinder reservoir) Brks fuse 11 10a C1 d4 C12 C2 e12 C7 a Cruise control system Data link connector (dlc) (under left side of dash) Diesel G102 G300 (on left frame rail, near ebcm) G400 (inner left rear frame rail) Gas Hot at all times Hot in run Hot in run or start Ign e fuse 22 10a Ignition Instrument panel cluster Left front sensor (+) Left front sensor (-) Left front wheel speed sensor Logic Nca Pnk Powertrain or engine control module (pcm or ecm) (in eng comp, on left inner fender) (gasoline) (left side of engine compt) (diesel) Right front sensor (+) Right front sensor (-) Right front wheel speed sensor S402 s102 Serial data Sp200 (in dash wiring harn, 10 cm from underhood pass-through grommet breakout) Stop lamp switch (behind left side of dash, above brake pedal) Tan Tcc brake sw Transmission control module (tcm) (on right frame rail) Underhood fuse block (on left side of eng compt) Vehicle speed sensor (vss) (4l80-e: on left side of transmission, 4l60-e: on right side of transmission) Vss high Vss input Vss low Vss output
ANTI-THEFT Anti-theft Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Anti-theft Wiring Diagram for Chevrolet Chevy Express G2006 3500: 43 (dash harn, 10 cm from underhood pass-through grommet breakout) splice pack sp200 12v 12v ref A11 A12 Acc volt B12 B9 serial data c2 Body control module (behind lower right side of dash) Data link connector (under left side of dash) Data serial Diesel Electronic brake control module (on left frame rail, near center of vehicle) Engine control module (left inner fender) Fuse 46 10a G303 (behind left kick panel) Gasoline Ground Hot at all times Hot in run or acc Hot in run or start Hot in run, acc or start Ign 0 volt Ign 1 volt Instrument panel cluster Passlk sens Passlock sensor (inside top of steering column) Passlock signal Pnk Powertrain control module (left inner fender) S248 Security indicator Sens ret Sensor return Serial data Tan Tbc accy (gas) tbc/tcm accy (diesel) Tbc fuse 19 10a Tbc ign 0 fuse 6 10a Tbc ign 1 fuse 24 10a Underhood fuse block (left side of engine compt) W/ active brake control W/o active brake control
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500: 57 (not used) 12 volt ref 5volt ref A10 A11 A12 Anti-theft system B10 B11 B12 Backlight lamps ctrl Battery + Body control module (behind lower right side of dash) Cargo door unlock rly ctrl Class 2 serial data Computer data lines system Dimming input Door locks system Driver unlock rly ctrl Drl low ctrl Drl on/off sw sig Exterior lights system G302 (behind left kick panel) G303 (behind left kick panel) Ground Hazard sw sig Headlamp dimmer sw sig Headlamp high beam relay ctrl Headlamp low beam relay ctrl Headlights system Horn rly ctrl Horns system Hot at all times I/p lamp dimming ctrl Interior lamp defeat sw sig Interior lights system Led dimming sig Park lamp relay ctrl Park lamp sw on sig Passenger door lock rly ctrl Passenger door sw unlock rly ctrl Pnk Power distribution system Rap relay coil ctrl Rear fog lamp rly Rear fog lamp sw sig S247 S248 Security syst sens low ref Security system sens sig Tan Tbc 3 fuse 16 15a Tbc 4 fuse 11 15a Tbc fuse 19 10a Tow/haul sw sig Tow/haul switch Underhood fuse block Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500: 52 (w/ commercial tradesman package) A11 Access panel lf rly ctrl Access panel lr rly ctrl Access panel right side rly ctrl Accessory volt B11 B12 Battery + Body control module (behind lower right side of dash) C except cutaway chassis Courtesy lamp high ctrl Courtesy lamps on sig D cutaway chassis Diesel Dimmer return Dome fluorescent work lamp rly ctrl Dome fluorescent work lamp sig Door lock ctrl Door locks system Door open sw sig Door unlock ctrl Except recreational vehicle Exterior lights system Gasoline Headlamp sw flash to pass sig Headlamp sw headlamp on sig Headlights system Hot at all times Hot in acc & run Hot in acc run & start Hot in run & start Ign 0 fuse 6 10a Ignition 0 volt Ignition 1 volt Interior lights system Key in ignition sw sig Lf door open sw sig Mirrors system Park brake sw sig Park brake switch (under left side of dash) Pnk Power distribution system (diesel) Rear door open sw sig Recreational vehicle Tan Tbc 2 fuse 18 15a Tbc accy tbc/tcm accy fuse 46 10a Tbc ign1 fuse 24 10a Trunk, tailgate, fuel doors system Underhood fuse block Warnings system
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Computer Data Lines Wiring Diagram for Chevrolet Chevy Express G2006 3500: 24 B12 Body control module (bcm) (behind lower right side of dash) Chime module (behind center of dash) Data clss 2 Data link connector (dlc) (under left side of dash) Electronic brake control module (ebcm) (on left frame rail, near center of vehicle) G303 (behind left kick panel) Hot at all times Inflatable restraint sensing & diagnostic module (sdm) (under left front seat) Instrument panel cluster Ltr fuse 30 15a Pnk Power distribution system Powertrain control module (pcm) (in engine compt, on left inner fender) Radio Remote control door lock receiver (behind center of dash) S248 Splice pack sp200 (in dash wiring harn, 10 cm from underhood pass- through grommet breakout) Underhood fuse block (left side of engine compt) Vehicle communications interface module (vcim) (below steering column) W/ active handling W/ radio W/o active handling W/o radio
CRUISE CONTROL Cruise Control Wiring Diagram, with Active Handling for Chevrolet Chevy Express G2006 3500 List of elements for Cruise Control Wiring Diagram, with Active Handling for Chevrolet Chevy Express G2006 3500: 43 Body fuse block (below left front seat) Class 2 Class 2 (pcm) Computer data lines system Cruise control on/off switch Cruise ind Cruise on input Data E12 Exterior lights system F10 G102 (behind left kick panel) Ground Hot at all times Hot in run & start Ign Ign e fuse 22 10a Ignition Instrument Nca Off Panel cluster Pcm ign 1 fuse 38 15a Pnk Powertrain control module (pcm) (in engine compt, on left inner fender) Resume/ accel Resume/accel Resume/accel sig S247 Serial data Set/ coast Set/coast sig Stop lp fuse 7 15a Stop/ chmsl fuse 8 10a Stoplamp sw input Stoplamp switch (above brake pedal) Throttle actuator control (tac) module (at left rear of engine compartment) Turn signal multifunction switch Uart serial data Underhood fuse block (left side of engine compt) Vehicle speed sensor (vss) (on right side of transmission) Vss high Vss low Cruise Control Wiring Diagram, without Active Handling for Chevrolet Chevy Express G2006 3500 List of elements for Cruise Control Wiring Diagram, without Active Handling for Chevrolet Chevy Express G2006 3500: 52 17 (or 1320) Auto cruise Body fuse block (below left front seat) C12 Cargo/ passenger Class 2 Class 2 (pcm) Computer data lines system Cruise control module (near brake fluid reservoir) Cruise control on/off switch Cruise ind Cruise on input Cutaway Data E12 Exterior lights system F10 G302 (behind left kick panel) Ground Hot at all times Hot in run & start Ign Ign e fuse 22 10a Ignition Inhibit sig Instrument Nca Off Panel cluster Pcm ign 1 fuse 38 15a Pnk Powertrain control module (pcm) (in engine compt, on left inner fender) Resume/ accel Resume/accel Resume/accel sig S231 S247 Serial data Set/ coast Set/coast sig Speed sensor input Speed signal Stop lp fuse 7 15a Stop/ chmsl fuse 8 10a Stoplamp sw input Stoplamp switch (above brake pedal) Turn signal multifunction switch Underhood fuse block (left side of engine compt) Vcm signal Vehicle speed sensor (vss) (on right side of transmission) Vss high Vss low
DEFOGGERS Defoggers Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Defoggers Wiring Diagram for Chevrolet Chevy Express G2006 3500: 35 A4 c2 B12 c1 Body fuse block (under left front seat) Defogger ind Driver outside rearview mirror G302 (behind left kick panel) G304 (behind right kick panel) G347 (bottom of left "b" pillar) G401 (on top of right "d" pillar) G402 (on top of left "d" pillar) Ground Hot at all times Hot in run Htd mir defog fuse 12 30a Hvac 1 fuse 9 10a Hvac control assembly Ign 3 voltage Left rear window defog grid Logic Nca Passenger outside rear- view mirror Rear window defogger switch Right rear window defog grid Rr def/ htd mir fuse 8 20a Rr defog relay 25 Rr defog rly pwr S247 S401 S500 S600 S902 Splice pack sp347 Stationary rear door window Swing out rear door window Under- hood fuse block (left side of engine compt)
ENGINE PERFORMANCE
4.3L VIN X 4.3L VIN X, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express G2006 3500: 50 (lower front of engine near crankshaft) crankshaft position (ckp) sensor (under left side of dash) data link connector +5v 12 ref 3-2 ss ctrl A10 Brk sw sig C10 Central sequential fuel injection (at top of engine) Ckp 1 sig Cls 2 data Cmp sig D10 E10 Ect sig Eng 1 fuse 23 15a Eng 2 fuse 21 10a G103 (right rear of engine) Gnd Ho2s hi sig Ho2s lo Hot at all times Hot in accy, run & start Hot in run & start Ign Ign 0 fuse 6 10a Inj 1 ctrl Inj 2 ctrl Inj 3 ctrl Inj 4 ctrl Inj 5 ctrl Inj 6 ctrl Ks 1 signal O2a fuse 15a O2b fuse 15a Pcm batt fuse 2 20a Pnk Powertrain control module (in engine compt, on left inner fender) Prnd a sig Prnd b sig Prnd p sig Range b Range c Ref low Rly ctrl S101 Sp200 (in dash wiring harn, 10cm from underhood pass- through grommet breakout) Starting/ charging system Tan Under- hood fuse block 4.3L VIN X, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express G2006 3500: 24 (cargo/passenger: in chassis harn, 44 cm from ebcm connector breakout) s301 (cutaway: in chassis harn, 87 cm from ebcm connector breakout) (not used) Cargo/ passenger Cutaway Engine coolant temperature sensor (on left side of engine) Fuel pump & sender assembly (in fuel tank) Fuel pump fuse 12 20a Fuel pump relay G102 (left rear of engine) G400 (on inner left rear frame rail) Heated oxygen sensor (bank 1 sensor 1) (in exh pipe, front of cat converter) Heated oxygen sensor (bank 1 sensor 2) (in exh pipe, rear of cat converter) Heated oxygen sensor (bank 2 sensor 1) (in exh pipe, front of cat converter) Heated oxygen sensor (bank 2 sensor 2) (in exh pipe, rear of cat converter) Hot at all times Knock sensor (on top left rear of (engine) Nca Park/neutral position switch (left side of transmission) Pnk S102 Tan Throttle position sensor (on left side of throttle body) Under- hood fuse block 4.3L VIN X, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express G2006 3500: 27 1-2 sol 2-3 sol 3-2 sol A red A/t fluid pressure manual valve position switch Automatic transmission C12 Camshaft position sensor (part of distributor, top rear of engine) Engine oil pressure (eop) sensor (top rear of engine) Evaporative emission (evap) canister purge solenoid (on top of engine, near throttle body) Fuel tank pressure sensor (in fuel tank) Hot in run & start Ign e fuse 22 10a M tan Manifold absolute pressure sensor (on top right side of engine) N pnk Pc sol valve Pnk Pnk a Red Rev Stop- lamp switch (above brake pedal) Tan Tcc pwm sol Tcc sol Tft sensor Underhood fuse block 4.3L VIN X, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express G2006 3500: 15 Can vent fuse 34 10a Evaporative emissions canister vent solenoid (on evap canister, near front of fuel tank) G103 (right rear of engine) Gnd Hot at all times Iat sensor Ign Intake air temperature (iat)/ mass airflow (maf) sensor (integral with mass airflow sensor) Pnk Pnk tan S101 Signal Tan Underhood fuse block Vehicle speed sensor (on right side of transmission) 4.3L VIN X, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express G2006 3500: 70 1-2 ss ctrl 12 ref 2-3 ss ctrl A/c low press A/c request A/c system (w/ front manual controls) Anti-lock brakes system B10 Clu rly ctrl Cntrl Crank fuse 27 10a Crank volt Cruise control system Cruise engaged Cruise inhibit Distributor Eng 1 fuse 23 15a Evap canp ctrl Evap vent ctrl Front high sig Front low sig Fuel lev sig Fuel press sig G102 (left rear of engine) G103 (right rear of engine) Gen cycle sig Gen ind Gnd Ho2s htr low Ho2s low ctrl Hot in run & start Hot in start Iac coil a hi Iac coil a low Iac coil b hi Iac coil b low Iat sig Ic timing cntrl Idle air control valve (on left side of throttle body) Ign 1 Ign coil Ignition coil Ignition control module Instrument panel cluster Logic Maf sig Malfunction indicator lamp Map sig Mil ctrl Nca Pc sol hi ctrl Pc sol lo ctrl Pcm ign 1 fuse 38 15a Pmp rly ctrl Pnk Pnk a Powertrain control module (in engine compt, on left inner fender) Press sens sig Prnd c sig Ref low S101 Starting/ charging system Starting/charging system Tan Tcc pwm ctrl Tcc sol ctrl Tft sens sig Tp sens sig Underhood fuse block Vss
5.3L VIN T 5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express G2006 3500: 62 (5.3l) (lower right rear of engine) crankshaft position (ckp) sensor (under left side of dash) data link connector +5v 12 ref 3-2 ss ctrl A10 Abs system Brk sw sig C10 Ckp 1 sig Cls 2 data Cmp sig D10 E10 Ect sig Eng 1 fuse 23 15a Eng 2 fuse 21 10a G103 (right rear of engine) Gnd Ho2s hi sig Ho2s lo Hot at all times Hot in accy, run & start Hot in run & start Ign Ign 0 fuse 10a Inj 1 ctrl Inj 2 ctrl Inj 3 ctrl Inj 4 ctrl Inj 5 ctrl Inj 6 ctrl Inj 7 ctrl Inj 8 ctrl Injectors Ks 1 signal Ks 2 signal O2a fuse 15a O2b fuse 15a Oil lev sw sig Pcm batt fuse 2 20a Pnk Pnk a Powertrain control module (in engine compt, on left inner fender) Prnd a sig Prnd b sig Prnd p sig Range b Range c Ref low Req torq sig Rly ctrl S101 Sp200 (in dash wiring harn, 10cm from underhood pass- through grommet breakout) Starting/ charging system Tan Tan b Uart ser data Under- hood fuse block W/ actice handling W/o actice handling 5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express G2006 3500: 28 (cargo/passenger: in chassis harn, 44 cm from ebcm connector breakout) s301 (cutaway: in chassis harn, 87 cm from ebcm connector breakout) (not used) Cargo/ passenger Cutaway Engine coolant temperature sensor (on left side of engine) Engine oil level switch (right side of oil pan) Fuel pump & sender assembly (in fuel tank) Fuel pump fuse 12 20a Fuel pump relay G102 (left rear of engine) G103 (right rear of engine) G400 (on inner left rear frame rail) Heated oxygen sensor (bank 1 sensor 1) (in exh pipe, front of cat converter) Heated oxygen sensor (bank 1 sensor 2) (in exh pipe, rear of cat converter) Heated oxygen sensor (bank 2 sensor 1) (in exh pipe, front of cat converter) Heated oxygen sensor (bank 2 sensor 2) (in exh pipe, rear of cat converter) Hot at all times Knock sensor 1 (below front of intake manifold) Knock sensor 2 (below rear of intake manifold) Nca Park/neutral position switch (left side of transmission) Pnk S101 S102 Tan Throttle position sensor (w/o actice handling) (on left side of throttle body) Under- hood fuse block 5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express G2006 3500: 37 (4l60e) (4l60e) s 1-2 sol 2-3 sol 3-2 sol 5v ref A red A/t fluid pressure manual valve position switch Accelerator pedal position sensor (under left side of dash) Apps 1 sig Apps 2 sig Automatic transaxle C12 Camshaft position sensor (top rear of engine) Engine oil pressure (eop) sensor (top rear of engine) Evaporative emission (evap) canister purge solenoid (on top of engine, near throttle body) Fuel tank pressure sensor (in fuel tank) Hot in run & start Ign e fuse 22 10a Low ref M tan Manifold absolute pressure sensor (top rear of engine) N pnk Pc sol valve Pnk Pnk a Red Rev Sensor 1 Sensor 2 Stop- lamp switch (above brake pedal) Tan Tcc pwm sol Tcc sol Tft sensor Throttle actuator control module (at left rear of engine compt) Underhood fuse block 5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express G2006 3500: 35 (at left rear of engine compt) throttle actuator control module (on left side of transmission) (4l80e) automatic transmission input shaft speed sensor 5v ref Can vent fuse 34 10a Chmsl vlt Cruise control system Cruise on sw Evaporative emissions canister vent solenoid (on evap canister, near front of fuel tank) G102 (on left rear of engine) G103 (right rear of engine) Gnd Ground Hot at all times Iat sensor Ign Ign 1 vlt Intake air temperature (iat)/ mass airflow (maf) sensor (integral with mass airflow sensor) Low ref Pnk Res/accel S101 S102 Set/coast Signal Tac mtr cntl Tac mtr cntl 1 Tan Throttle body Throttle position sensor 1 Throttle position sensor 2 Tps 1 sig Tps 2 sig Uart ser data Underhood fuse block Vehicle speed sensor (4l60-e: on right side of transmission) (4l80-e: on left side of transmission) 5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express G2006 3500 List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express G2006 3500: 92 (5.3l) (in even ignition/coil module jumper harn, on top right side of engine) (in odd ignition/coil module jumper harn, on top left side of engine) (left rear of engine) g102 1-2 ss ctrl 2-3 ss ctrl A/c low press A/c request A/c system (w/ front manual controls) Anti-lock brakes system At iss high sig At iss low sig B b B10 Clu rly ctrl Crank fuse 27 10a Crank volt Cruise control system Cruise engaged Cruise inhibit Ctrl Del torq sig Eng 1 fuse 23 15a Evap canp ctrl Evap vent ctrl Front high sig Front low sig Fuel lev sig Fuel press sig G103 (right rear of engine) Gen cycle sig Gen ind Gnd Ho2s htr low Ho2s low ctrl Hot in run & start Hot in start Iac coil a hi Iac coil a low Iac coil b hi Iac coil b low Iat sig Ic 1 ctrl Ic 2 ctrl Ic 3 ctrl Ic 4 ctrl Ic 5 ctrl Ic 6 ctrl Ic 7 ctrl Ic 8 ctrl Idle air control valve (on left side of throttle body) Ign Ign feed Ignition coils Instrument panel cluster Logic Maf sig Malfunction indicator lamp Map sig Mil ctrl Nca Nca nca Pc sol hi ctrl Pc sol lo ctrl Pcm ign 1 fuse 38 15a Pmp rly ctrl Pnk Pnk d Powertrain control module (in engine compt, on left inner fender) Press sens sig Prnd c sig Red c Ref lo Ref low S101 S183 S184 S185 S187 S188 Spark plug Starting/ charging system Starting/charging system Tan Tcc pwm ctrl Tcc sol ctrl Tft sens sig Tp sens sig Underhood fuse block Vss W/ actice handling W/o actice handling
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Back-up Lamps Wiring Diagram for Chevrolet Chevy Express G2006 3500: 14 Body control module (behind lower right side of dash) C5 d F c5 G401 (on top of right "d" pillar) G402 (on top of left "d" pillar) Hot at all times Left backup lamp Mirrors system Right backup lamp S401 S403 S404 (in body harn, 38 cm g402 breakout) Tbc 2 fuse 18 15a Underhood fuse block (left side of engine compartment) Exterior Lamps Wiring Diagram, Cutaway Chassis (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Exterior Lamps Wiring Diagram, Cutaway Chassis (1 of 2) for Chevrolet Chevy Express G2006 3500: 76 (in dash harness, 13 cm from radio & hvac control assembly breakout) s245 (in dash harness, 6 cm from radio & hvac control assembly breakout) Battery pos volt Body control module (behind lower right side of dash) Body fuse block (under left front seat) C1 e4 C1 e6 C1 f2 C2 a3 C2 b2 C2 c1 C2 d1 C2 f2 Center high mounted stop lamp Cruise control system Diesel Driver's outside rear view mirror Drl low control Drl low ctrl Drl on/off sig Drv pwr trn mir fuse 14 10a Frt prk fuse 22 10a G302 (behind left kick panel) G347 (on bottom of left "b" pillar) G401 (on top of right "d" pillar) Ground H.d. w/ gas early production Hazard sw sig Hazard switch Head Headlamp and panel dimmer switch Hot at all times Instrument panel cluster Left Left turn signal ind Left turn signal lamp Lf turn sig feed Logic Lr pkr fuse 18 10a Lr stop/turn feed Lt drl/turn feed Lt turn sig sw sig Nca Not used Off Park Park lamp relay Park lamp rly ctrl Park lamp sw on sig Pass trn mir fuse 19 10a Passenger's outside rear view mirror Pnk Provisional Rf turn sig feed Right Right turn signal ind Right turn signal lamp Rr pkr fuse 20 10a Rr stop/turn feed Rt drl/turn feed Rt turn sig sw sig S246 S247 S264 S401 S500 S600 Splice pack sp347 Stop lamp sw sig Stop/ chmsl fuse 8 10a Trlr prk fuse 21 15a Turn signal switch Turn signal/ multifunction switch Turn signal/hazard flasher module (behind left center of dash) Upftr prk lamps fuse 16 10a W/ outside rear view mirror turn signal indicators Exterior Lamps Wiring Diagram, Cutaway Chassis (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Exterior Lamps Wiring Diagram, Cutaway Chassis (2 of 2) for Chevrolet Chevy Express G2006 3500: 51 B11 Battery positive voltage Btsi bck/up fuse 36 15a C1 f11 C2 b4 C2 b6 C2 c1 C2 f10 C3 b6 C3 c1 C3 c6 C3 d1 C4 h C4 p E11 E12 F11 Fuse block- underhood (left side of engine compartment) G100 (on left front of engine compartment) G101 (on right front of engine compartment) G302 (behind left kick panel) G400 (on inner left frame rail) G400 (on inner left rear frame rail) Ground Hazrd fuse 14 15a Hot at all times Hot in run or start Ign e fuse 22 10a Lr stop/ trn fuse 4 10a Lt drl/ turn fuse 10 10a Marker lamp (lf) Marker lamp (rf) Not used Ohms Park/ turn signal lamp (lf) Park/ turn signal lamp (rf) Park/neutral position switch (on left side of transmission) Pnk Resistor Rr stop/ trn fuse 6 10a Rt drl/ turn fuse 9 10a S110 S118 S231 (in dash harness, 23 cm from c200) S247 S402 Stop lamp fuse 7 15a Stop lamp switch (above brake pedal) Trlr bck/up fuse 5 10a Trlr fuse 13 30a Trlr fuse 50 30a Exterior Lamps Wiring Diagram, Except Cutaway (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Exterior Lamps Wiring Diagram, Except Cutaway (1 of 2) for Chevrolet Chevy Express G2006 3500: 84 (in dash harness, 6 cm from radio & hvac control assembly breakout) A4 c2 Backup lights circuit Battery pos volt Body control module (behind lower right side of dash) C1 a1 C1 b8 C1 e6 C1 f2 C2 a3 C2 b2 C2 c1 C2 d1 C2 f2 Center high mounted stop lamp Cruise control system Driver's outside rear view mirror Drl low control Drl low ctrl Drv pwr trn mir fuse 14 10a Fr prk fuse 22 10a Fuse block- body (under left front seat) G302 (behind left kick panel) G347 (on bottom of left "b" pillar) G401 (on top of right "d" pillar) G402 (on top of left "d" pillar) Ground H.d. w/ gas early production Hazard sw sig Hazard switch Head Headlamp and panel dimmer switch Hot at all times Instrument panel cluster Left Left turn signal ind Left turn signal lamp Lf turn sig feed License lamp Logic Lr park fuse 18 10a Lr stop/turn feed Lt drl/turn feed Lt rear stop/ turn fuse 3 10a Lt turn sig sw sig Nca Not used Off Park Park lamp relay Park lamp rly ctrl Park lamp sw on sig Pass trn mir fuse 19 10a Passenger's outside rear view mirror Pnk Provisional Rf turn sig feed Right Right turn signal ind Right turn signal lamp Rr park fuse 20 10a Rr stop/turn feed Rt drl/turn feed Rt rear stop/ turn fuse 6 10a Rt turn sig sw sig S246 S247 S264 S401 S403 S500 S600 S902 Splice pack sp347 Stop lamp sw sig Stop/ chmsl fuse 8 10a Tail/stop & turn signal lamp (left) Tail/stop & turn signal lamp (right) Trlr prk fuse 21 15a Turn signal switch Turn signal/ multifunction switch Turn signal/hazard flasher module (behind left center of dash) Upftr prk lamps fuse 16 10a W/ outside rear view mirror turn signal indicators Exterior Lamps Wiring Diagram, Except Cutaway (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Exterior Lamps Wiring Diagram, Except Cutaway (2 of 2) for Chevrolet Chevy Express G2006 3500: 47 (behind left kick panel) Battery positive voltage Btsi/ bck/up fuse 36 15a C1 f11 C2 b4 C2 b6 C2 c1 C2 d8 C2 f10 C3 c1 C3 d1 C3 d2 C4 p E12 Fuse block- underhood (on left side of engine compartment) G100 (on left front of engine compartment) G101 (on right front of engine compartment) G302 G400 (on inner left frame rail) G400 (on inner left rear frame rail) Ground Hazrd fuse 14 15a Hot at all times Hot in run or start Ign e fuse 22 10a Lr stop/ trn fuse 3 10a Lt drl/ turn fuse 10 10a Marker lamp (lf) Marker lamp (rf) Park/ turn signal lamp (lf) Park/ turn signal lamp (rf) Park/neutral position switch (on left side of transmission) Pnk Rr stop/ trn fuse 4 10a Rt drl/ turn fuse 9 10a S110 S118 S247 S402 Stop lamp fuse 7 15a Stop lamp switch (above brake pedal) Trailer stop/ turn relay- left Trailer stop/ turn relay- right Trlr bck/up fuse 5 10a Trlr fuse 13 30a Trlr fuse 50 30a Trlr stop/ trn fuse 17 15a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Chevrolet Chevy Express G2006 3500 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Chevrolet Chevy Express G2006 3500: 77 (4.3l) (4.3l) ignition control module (icm) (4.8l/5.3l/6.0l) (forward lamp harness, approx 12 cm from left headlamp connector breakout) (in engine harness, approx 4 cm from knock sensor breakout) (not used) d2 4.8l, 5.3l, 6.0l A/c compressor clutch A/c low pressure switch Battery Blower motor resistor assembly Brake fluid level switch C101 Camshaft position (cmp) sensor shield Coolant level switch Crankshaft position (ckp) sensor shield Diesel Electronic brake control module (ebcm) Engine control module (ecm) Engine oil level switch Fuel pressure regulator shield Fuel pump relay Fuel rail pressure (frp) sensor shield G100 (left front of engine compt) G101 (right front of engine compt) G102 (gasoline: on left rear of engine) (diesel: left front lower side of eng block) G103 (diesel) (left front lower side of eng block) G103 (gasoline) (on right rear of engine) G104 (on lower right front of engine) G105 (on right front frame rail, in engine compt) G106 (on right front of engine compt) G107 (diesel) (left front lower side of eng block) G108 (diesel) (right front lower side of eng block) G300 (on left frame rail, near ebcm) (w/ active brake control) G300 (on left frame rail, near ebcm) (w/o active brake control) G301 (behind left kick panel) G305 (diesel) (left center outer frame rail) Gas Glow plug control module (gpcm) 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 Inflatable restraint i/p module disable switch Inflatable restraint sensing & diagnostic module (sdm) Intake air temperature (iat)/ mass air flow (maf) sensor Left front marker lamp Left front park/turn signal lamp Left headlamp (w/ sealed beam headlamps) Left high beam headlamp (w/ composite headlamps) Left low beam headlamp (w/ composite headlamps) Nca On top right side of engine) Park/ neutral position (pnp) switch Powertrain control module (pcm) Red Right front marker lamp Right front park/turn signal lamp Right headlamp (w/ sealed beam headlamps) Right high beam headlamp (w/ composite headlamps) Right low beam headlamp (w/ composite headlamps) S101 s101 (in engine harness, approx 43 cm from underhood lamp breakout) S107 S108 S118 (forward lamp harness, approx 13 cm from right headlamp connector breakout) Secondary battery Throttle actuator control (tac) module Transmission control module (tcm) Underhood fuse block Underhood lamp Vacuum pump W/ active brake control Ground Distribution Wiring Diagram (2 of 4) for Chevrolet Chevy Express G2006 3500 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Chevrolet Chevy Express G2006 3500: 60 (if equipped) power brake booster fluid flow alarm switch (if equipped) rear seat audio control (if equipped) remote control door lock receiver (in dash harness, approx 5 cm from inflatable restraint i/p module connector breakout) (in dash harness, approx 8 cm from c200 breakout) (rv/upfitter) provisional A/t shift lock control solenoid A12 Air temperature actuator Auxiliary power outlet 1 Auxiliary power outlet 2 Auxiliary relay 24 Body control module (bcm) Body fuse block C200 breakout) C222 Cargo unlk relay 27 Chime module Cigar lighter Cruise control module Ctsy lp relay 26 Data link connector (dlc) Door lks relay 30 Drv unlk relay 28 Exc radio delete G302 (behind left kick panel) G303 (behind left kick panel) G304 (behind right kick panel) Gasoline w/o active brake control Hazard switch Headlamp & panel dimmer switch Headlamp dimmer switch High idle switch Hvac control assembly Ignition key alarm switch Inflatable restraint passenger air bag on/off indicator Inflatable restraint passenger presence system module Inside rearview mirror Instrument panel cluster Light duty w/o r/v upfitter Pass unlk relay 31 Radio Radio delete Rr defog relay 25 S264 (in steering column harness, approx 29 cm from c200) Steering wheel speed/ position sensor Tan Tow/haul switch Traction control switch Turn signal/ hazard flasher module Turn signal/ multifunction switch W/ active brake control W/ cigar lighter W/ electronic display W/ heated outside mirrors & rear defogger W/o cigar lighter Windshield washer fluid pump Windshield wiper motor Windshield wiper/washer switch Wnd rap relay 23 Ground Distribution Wiring Diagram (3 of 4) for Chevrolet Chevy Express G2006 3500 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Chevrolet Chevy Express G2006 3500: 58 (auxiliary hvac) (cutaway upfitter) (if equipped) auxiliary blower motor switch (if equipped) driver window switch (if equipped) left rear side door jamb switch (if equipped) left vanity mirror lamp (if equipped) passenger door lock switch (if equipped) passenger seat adjuster switch (if equipped) rear auxiliary hvac control assembly (if equipped) right vanity mirror lamp (rv/ upfitter) (rv/upfitter) provisional p Auxiliary hvac control processor C320 C321 C409 Cargo/ cutaway Courtesy/ reading lamp (mid) Courtesy/ reading lamp (rear) Driver door latch assembly Driver door lock switch Driver outside rearview mirror Driver seat adjuster switch Except rv/upfitter From splice pack sp347 a (diagram 3 of 4) From splice pack sp347 b (diagram 3 of 4) Front auxiliary hvac control assembly Front courtesy/ reading lamp G347 (on bottom of left "b" pillar) If equipped Left front seat belt switch Left vanity mirror lamp Nca Outside rearview mirror switch Passenger Passenger door latch assembly Passenger outside rearview mirror Passenger window switch Provisional b Provisional c Right front seat belt switch Right rear side door jamb switch Right vanity mirror lamp Rv/upfitter S204 (in vanity mirror lamp harness, approx 13 cm from c203) S304 (in driver seat harness, approx 11 cm from driver seat adjuster switch connector breakout) S317 (in passenger seat harness, approx 10 cm from c306) S500 (in left front door harness, approx 6 cm from left front door door speaker breakout) S600 (in right front door harness, approx 7 cm from right front door speaker breakout) Splice pack sp347 To splice pack sp347 (diagram 3 of 4) W/ driver power seat adjuster W/ electronic side door lock control W/ outside heated mirrors W/ rear auxiliary controls W/o driver power seat adjuster W/o electronic side door lock control W/o rear auxiliary controls Ground Distribution Wiring Diagram (4 of 4) for Chevrolet Chevy Express G2006 3500 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Chevrolet Chevy Express G2006 3500: 70 (if equipped) cruise control module (if equipped) left trailer stop/turn relay (if equipped) rear cargo door lock switch (if equipped) right trailer stop/turn relay (in body harness, approx 16 cm from chmsl connector breakout) Auxiliary air temperature actuator Auxiliary blower motor Auxiliary heater Auxiliary mode actuator B11 Brake pressure differential switch C405 Cargo door latch assembly Center high mounted stop lamp (chmsl) Coolant heater Cutaway Diesel Dome fluorescent work lamp 1 Dome fluorescent work lamp 2 Except rv/ upfitter Fluorescent work lamp connector) Fuel heater Fuel pump Fuel pump & sender assembly Fuel pump coolant heater G400 (on inner left rear frame rail) G401 (on top of right "d" pillar) G402 (on top of left "d" pillar) G403 (on center of left "d" pillar) Gas passenger/ cargo heavy duty (w/o hd truck trailer wiring) If equipped Left backup lamp Left front dome fluorescent work lamp Left front side front access panel actuator Left front side rear access panel actuator Left rear dome fluorescent work lamp Left rear fog lamp Left rear side front access panel actuator Left rear side rear access panel actuator Left rear window defogger grid Left tail/stop & turn signal lamp License lamp Light duty Nca Others Park/ neutral position switch Passenger/ cargo van Rear dome lamp Rear hvac system Resistor Right backup lamp Right dome fluorescent work lamp Right rear fog lamp Right rear window defogger grid Right side front access panel actuator Right side rear access panel actuator Right tail/stop & turn signal lamp S231 (in dash harness, 23 cm from c200) S300 (in prp/uf2 harness, approx 42 cm from left front side front access panel actuator) S316 (front of fuel pump) S403 (in body harness, approx 6 cm from g401 breakout) S411 (in rear hvac harness, approx 6 cm from auxiliary blower motor connector breakout) S902 (in right rear door harness, approx 19 cm from license lamp connector breakout) S904 (rear fog lamp harness, approx 12 cm from c406 breakout) Stop lamp switch Trailer wiring harness Turn/ hazard flasher module Underhood fuse block W/ stationary back window W/ swing out back window
HEADLIGHTS Headlights Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Headlights Wiring Diagram for Chevrolet Chevy Express G2006 3500: 40 A12 B/c Body control module (behind lower right side of dash) Composite Dimmer switch signal Flash to pass signal Ftp Fusible link 2 G100 (left front of engine compt) G101 (right front of engine compt) G302 (behind left kick panel) Hdlp- hibm relay Hdlp- lobm relay Head Headlamp & panel dimmer switch Headlamp dimmer switch Headlamp on signal High beam relay control Hot at all times Left headlamp Left high beam headlamp Left low beam headlamp Lh- hibm fuse 44 10a Lh- hibm fuse 45 10a Lh- lobm fuse 43 10a Low beam relay control Off Park Red Rh- lobm fuse 42 10a Right headlamp Right high beam headlamp Right low beam headlamp S110 S118 S247 S264 Sealed Turn signal/ multifunction switch Underhood fuse block (on left side of engine compt)
HORN Horn Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Horn Wiring Diagram for Chevrolet Chevy Express G2006 3500: 18 Body control module (behind lower right side of dash) C1 f4 C2 b9 C2 c3 G c1 G102 (on left rear of engine) Horn assembly (left front of engine compt) Horn contact Horn fuse 15 15a Horn relay Horn relay control Hot at all times Nca S102 Tan Turn signal cancel cam Turn signal/ multifunction switch Underhood fuse block (on left side of engine compartment)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500: 70 000000 trip A10 A11 Abs ind Air bag ind B10 B11 Batt voltage Battery ind Brake ind Brk warn ind Check gages ind Check oil ind Class 2 (bcm) Class 2 (ebcm) Class 2 (ecm) Class 2 (ecm/pcm) Class 2 (pcm) Class 2 (sdm) Computer data lines system Cruise ind Drl ind (gas) E10 E12 Engine coolant temp Exterior lights system Fuel gauge G302 (behind left kick panel) G303 (behind left kick panel) Ground High beam ind Hot at all times Hot in run or start Ign Ign e fuse 22 10a Ign voltage Illumination (6 bulbs) Instrument panel cluster Ipc fuse 31 10a Lcd display Left turn ind Lh frt turn sig sup volt Low coolant ind (diesel) Malfunction ind lamp Mil signal Off Oil pressure P r n d 3 2 1 Pass sb ind Pnk Power brake booster fluid flow alarm switch (near power steering pump, in outlet hose) Power brake booster fluid pressure alarm switch (in booster inlet hose) Rh frt turn sig sup volt Right turn ind S247 S248 Seat belt ind Security ind Serial data Speedometer Tow/haul ind Traction control ind's Trip reset Trip reset switch Underhood fuse block (in engine compt, attached to left front fender) Volt sig Voltmeter Wait to start Wait to start ind (diesel) Water in fuel ind (diesel) Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500: 49 (chassis harness, near breakout to ebcm) (left side of engine compt) (diesel) engine control module (right side of oil pan) engine oil level switch 5 volt ref B12 Body control module (bcm) (lower right side of dash) Computer data lines system Diesel Dimming Ect sens Engine controls system Engine coolant temperature sensor (left side of engine) Engine oil pressure sensor (top rear of engine) Except 4.3l Fuel level Fuel level sensor (diesel) Fuel pump & sender assembly (gasoline) (in fuel tank) G103 (right rear of engine) G107 (left front lower side of engine block) G303 (behind left kick panel) G347 (bottom of left "b" pillar) Gas Gasoline Inflatable restraint passenger air bag on/off indicator Inflatable restraint sensing & diagnostic module (under left front seat) Left front seat belt switch (in left front seat belt latch) Lf belt sw Light duty Logic Low ref Mil ctrl Oil press Park brake Park brake switch (under left side of dash) Passenger seat belt ind Powertrain control module (gasoline) (in engine compt, on left inner fender) Rf belt sw Right front seat belt switch (in right front seat belt latch) S101 S248 S301 S304 S317 Serial data Splice pack sp347 Tan W/ pwr seat W/o pwr seat Water in fuel sensor (diesel)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram, with Upfitter Package for Chevrolet Chevy Express G2006 3500 List of elements for Courtesy Lamps Wiring Diagram, with Upfitter Package for Chevrolet Chevy Express G2006 3500: 68 (in vanity mirror lamp harness, lf passenger compt, approx 42cm (15.5in) from left vanity mirror breakout) s331 (left side of engine compt) underhood fuse block A10 A11 Auxiliary 1 fuse 32 50a B c4 Battery Body control module (bcm) (lower right side of dash) Body fuse block (below drivers seat) C2 d11 Cargo door latch assembly Ctsy Ctsy lamps on sig Ctsy lp relay 26 Ctsy lp/ seo fuse 3 15a D c4 D1 c2 Defeat sw sig Dome Dome defeat Dome flour- escent fuse 2 10a Dome fluorescent work lamp 1 Dome fluorescent work lamp 2 Dome fluorescent work lamp relay (attached to left "b" pillar) Door open sw sig Driver door latch assembly E5 c3 Fl dome lp sig Fl dome rly ctrl G102 (left rear of engine) G302 (behind left kick panel) G347 (bottom of left "b" pillar) G402 (top of left "d" pillar) G403 (center of left "d" pillar) Headlamp and panel dimmer switch Hndl Hot at all times Left front dome fluorescent work lamp Left rear dome fluorescent work lamp Left rear door jamb switch Left vanity mirror lamp Not used Passenger door latch assembly Power Provisional Rear door ajar Rear door sw sig Rear fuse block (attached to left "b" pillar) Red Right dome fluorescent work lamp Right rear door jamb switch Right vanity mirror lamp S102 S204 S247 S300 S312 S348 S350 S500 S600 S902 Splice pack sp347 Tan Tbc 2 fuse 18 15a Underhood lamp W/ power door locks W/o power door locks Courtesy Lamps Wiring Diagram, without Upfitter Package (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Courtesy Lamps Wiring Diagram, without Upfitter Package (1 of 2) for Chevrolet Chevy Express G2006 3500: 45 A10 A11 Auxiliary 1 fuse 32 50a Battery Body control module (bcm) (lower right side of dash) Body fuse block (below drivers seat) Cargo Cargo door latch assembly Ctsy Ctsy lamps on sig D11 Defeat sw sig Dome Dome defeat Door open sw sig Driver door latch assembly Fl work lmp ctrl Fl work lmp sig G302 (behind left kick panel) G347 (bottom of left "b" pillar) G401 (top of right "d" pillar) G402 (top of left "d" pillar) Headlamp and panel dimmer switch Hndl Hot at all times Left rear door jamb switch Lf door sw sig Not used Passenger door latch assembly Power Rear dome lamp Rear door ajar Red Right rear door jamb switch S247 S401 S500 S600 S902 Splice pack sp347 Tan Tbc 2 fuse 18 15a Underhood fuse block (left side of engine compt) W/ power door locks W/o power door locks Courtesy Lamps Wiring Diagram, without Upfitter Package (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Courtesy Lamps Wiring Diagram, without Upfitter Package (2 of 2) for Chevrolet Chevy Express G2006 3500: 33 Cargo/cutaway w/o vanity mirrors Dome Dome flour- escent fuse 2 10a Dome fluorescent work lamp 1 Dome fluorescent work lamp 2 Dome fluorescent work lamp relay (attached to left "b" pillar) Front courtesy reading lamps Front courtesy/ reading light G102 (left rear of engine) G403 (center of left "d" pillar) Left front dome fluorescent work lamp Left rear dome fluorescent work lamp Left vanity mirror lamp Mid courtesy reading lamps Nca Reading Rear courtesy reading lamps Rear fuse block (attached to left "b" pillar) Red Right dome fluorescent work lamp Right vanity mirror lamp S102 S300 S312 (in pfp/ uf2 harn) S314 S322 S330 S348 S350 (in prp/ uf2 harn) S406 (in head- liner harn S407 Underhood lamp W/ vanity mirrors Instrument Illumination Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Instrument Illumination Wiring Diagram for Chevrolet Chevy Express G2006 3500: 55 5 volt ref 6 bulbs A11 A12 Auxiliary blower motor switch Auxiliary heater plumbing and wiring and auxiliary heater B11 B12 Back-up lps ctrl Body control module (bcm) (lower right side of dash) Body fuse block (below left front seat) Dimming input Dimming return Driver door lock switch Driver window switch Drl low cntrl Front auxiliary hvac control assembly Front passenger door lock switch Front passenger window switch G301 (behind left kick panel) G302 (behind left kick panel) G303 (behind left kick panel) G304 (behind right kick panel) G347 (on bottom of left "b" pillar) Gnd Headlamp and panel dimmer switch Headlamp on ind High idle switch Hvac control assembly Inflatable restraint i/p module disable switch Instrument panel cluster Led dimming sig Logic Panel lps dim Pnk Rear auxiliary hvac control assembly Rear fog lp ind Rear seat audio (rsa) control S247 S248 S249 S250 (in dash harn, 5 cm from air temperature actuator connector breakout) S314 S330 S355 S500 S600 Splice pack sp347 Tow/haul switch Traction control switch W/ hvac provisions W/ rear aux controls W/o rear aux controls W/o recreational vehicle sales package, upfitter w/ recreational vehicle sales package, upfitter With p/windows & door locks
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 6) for Chevrolet Chevy Express G2006 3500 List of elements for Power Distribution Wiring Diagram (1 of 6) for Chevrolet Chevy Express G2006 3500: 78 (not used) (or red) (rfa fuse 20) (diagram 1 of 6) (w/ active handling) (w/o active handling) A10 A12 Abs/vse fuse 48 60a Aux pwr fuse 29 20a Auxiliary power outlet 1 Auxiliary power outlet 2 B10 Battery Blow fuse 51 40a Blower motor resistor assembly Body control module (bcm) Body fuse block C1 c1 C2 a10 C2 b5 C2 b7 C2 f12 C3 a5 C6 b C7 a Chime (w/o radio) Cigar lighter D10 Data link connector (dlc) Driver seat adjuster switch (if equipped) E10 E12 Electronic brake control module (ebcm) F b F10 F12 From underhood fuse block b Front passenger seat adjuster switch (if equipped) Fusible link 2 Fusible link 3 G304 (behind right kick panel) Generator Hazrd fuse 14 15a Hvac control assembly Instrument panel cluster (ipc) Ipc fuse 31 10a Left trailer stop/turn relay (if equipped) Ltr fuse 30 15a Mega fuse 65 125a Pcm bat fuse 2 20a Powertrain control module (pcm) Pwr seat circuit breaker 60 30a Radio (w/ radio) Radio bat fuse 1 15a Red Remote control door lock receiver (if equipped) Rfa fuse 20 10a Right trailer stop/turn relay (if equipped) Rr def/htd mir fuse 8 20a S249 Spare fuse 64 Starter Stop lamp switch Stop lp fuse 7 15a Tbc 2 fuse 18 15a Tbc 3 fuse 16 15a Tbc 4 fuse 11 15a Tbc fuse 19 10a To body fuse block (door lks fuse 15) (diagram 2 of 6) To underhood fuse block (can vent fuse 34) (diagram 2 of 6) To underhood fuse block (tbc fuse 19) (diagram 1 of 6) Trl stop/trn fuse 17 15a Trlr fuse 13 30a Trlr fuse 50 30a Turn signal/ hazard flasher module Underhood fuse block (on left side of engine compt) W/ cigar lighter W/ rear window defogger/ heated mirrors W/o cigar lighter Power Distribution Wiring Diagram (2 of 6) for Chevrolet Chevy Express G2006 3500 List of elements for Power Distribution Wiring Diagram (2 of 6) for Chevrolet Chevy Express G2006 3500: 53 (hdlp hi beam relay) (diagram 2 of 6) (on left side of engine compt) underhood fuse block (pwr seat circuit breaker 60) (diagram 1 of 6) (under left front seat) body fuse block A/c fuse 32 10a A/c relay Auxiliary 2 fuse 33 50a Auxiliary relay C1 e6 C4 r C5 a Can vent fuse 34 10a Cargo unlk relay Composite Door lks fuse 15 20a Door lks relay Drv lks fuse 7 10a Drv unlk relay Evaporative emissions (evap) canister vent solenoid From underhood fuse block (mega fuse 65) (diagram 1 of 6) From underhood fuse block c From underhood fuse block d Fuel pump fuse 12 20a Fuel pump relay Hdlp hi beam relay Hdlp lo beam relay Horn fuse 15 15a Horn relay Htd mir/defog fuse 12 30a Ign a fuse 49 40a Ign b fuse 52 40a Left headlamp Left hi beam fuse 44 10a Left high beam headlamp Left lo beam fuse 43 10a Left low beam headlamp Pass unlk relay Rear door lks fuse 5 10a Right headlamp Right hi beam fuse 45 10a Right high beam headlamp Right lo beam fuse 42 10a Right low beam headlamp Rr defog relay Sealed Spare fuse 33 Spare relay Starter relay To body fuse block (park lp relay) (diagram 3 of 6) To ignition switch (diagram 3 of 6) To underhood fuse block (ign a fuse 49) (diagram 2 of 6) Wsw fuse 41 15a Wsw relay Power Distribution Wiring Diagram (3 of 6) for Chevrolet Chevy Express G2006 3500 List of elements for Power Distribution Wiring Diagram (3 of 6) for Chevrolet Chevy Express G2006 3500: 76 (auxiliary 2 fuse 33) (diagram 2 of 6) (not used) (on left side of engine compt) underhood fuse block (provisional) (rv/upfitter) (w/ active handling) (w/o active handling) Acc Airbag fuse 37 10a Body control module (bcm) Body fuse block (under left front seat) Btsi fuse 28 10a Btsi/bu fuse 36 15a C320 C405 Cruise control module (if equipped) Ctsy lp relay (rv/upfitter) Ctsy lp/seo fuse 3 15a Cutaway F11 Fr prk fuse 22 10a From body fuse block g From underhood fuse block (ign a fuse 49) (diagram 2 of 6) From underhood fuse block (ign b, fuse 52) (diagram 2 of 6) 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 Heavy duty Ignition switch Inflatable restraint i/p module disable switch (heavy duty) Inflatable restraint passenger airbag off/on indicator Inflatable restraint passenger presence system (pps) module (light duty) Inflatable restraint sensing & diagnostic module Inside rearview mirror (w/ temp display) Isrvm fuse 26 10a Left front marker lamp Left front park/turn signal lamp Left tail/stop & turn signal lamp License lamp Light duty Lock Lr prk fuse 18 10a Nca O2 snsr a fuse 40 15a O2 snsr b fuse 39 15a Park acc Park lp relay Park/ neutral position (pnp) switch Pcm ign 1 fuse 38 15a Pnk Pnk f Powertrain control module (pcm) Reverse Right front marker lamp Right front park/turn signal lamp Right tail/stop & turn signal lamp Rr prk fuse 20 10a Run Spare fuse 25 Spare fuse 35 Start Steering wheel speed/ position sensor Stop lamp switch Tbc ign 1 fuse 24 10a Throttle actuator control module To body fuse block (auxiliary 1 fuse 32) (diagram 5 of 6) To body fuse block (brk fuse 11) (diagram 5 of 6) To underhood fuse block (crank fuse 27) (diagram 4 of 6) To underhood fuse block (eng 2 fuse 21) (diagram 4 of 6) To underhood fuse block (ign o fuse 6) (diagram 4 of 6) To underhood fuse block (tbc acc fuse 46) (diagram 4 of 6) Trailer wiring Trlr bu fuse 5 10a Trlr prk fuse 21 15a Underhood fuse block Upftr prk fuse 16 10a Power Distribution Wiring Diagram (4 of 6) for Chevrolet Chevy Express G2006 3500 List of elements for Power Distribution Wiring Diagram (4 of 6) for Chevrolet Chevy Express G2006 3500: 46 (not used) 4.3l 4.8l/5.3l/ 6.0l A/c relay A11 Automatic transmission B10 Body control module (bcm) C10 C12 C175 Central sequential fuel injection (central sfi) Crank fuse 27 10a Cruise control on/off switch D10 E10 E12 Eng 1 fuse 23 15a Eng 2 fuse 21 10a Evaporative emissions (evap) canister purge solenoid Except 4.3l Fr wpr fuse 47 25a From eng 1 fuse 23 (diagram 4 of 6) From ignition switch (diagram 3 of 6) From underhood fuse block (air bag fuse 37) (diagram 3 of 6) Fuel injector Ign 0 fuse 6 10a Ign e fuse 22 10a Ignition coil Ignition coil module Instrument panel cluster Mass air flow (maf) sensor Nca Park/ neutral position (pnp) switch Pnk Pnk pnk Powertrain control module (pcm) S184 (in odd ignition coil module jumper harness, on top left side of engine) S185 (in even ignition coil module jumper harness, on top right side of engine) Stop lamp switch Tbc accy fuse 46 10a To ign e fuse 22 (diagram 4 of 6) Turn signal switch Turn signal/ multifunction switch Underhood fuse block (on left side of engine compt) Windshield wiper motor Power Distribution Wiring Diagram (5 of 6) for Chevrolet Chevy Express G2006 3500 List of elements for Power Distribution Wiring Diagram (5 of 6) for Chevrolet Chevy Express G2006 3500: 57 (in front headliner (in upfitter hvac control harness, approx 88 cm from c303 breakout) s307 (in rear hvac harness, approx 13 cm from auxiliary blower motor connector breakout) s405 (not used) (or red) (provisional) (provisional) (rv/upfitter) (w/ outside heated mirrors & rear window defogger) (w/ rv upfitter option) (w/o rv upfitter option) Air temperature actuator Auxiliary 1 fuse 32 60a 50a Auxiliary air temperature actuator Auxiliary high speed blower motor relay Auxiliary hvac control processor Auxiliary low speed blower motor relay Auxiliary med speed blower motor relay Auxiliary mode actuator Auxiliary relay B10 Body control module Body fuse block (under left front seat) Brk fuse 11 10a C222 C407 Driver window switch (if equipped) E11 Electronic brake control module (ebcm) F10 F11 From body fuse block (ctsy lp/seo fuse 3) (diagram 3 of 6) From ignition switch (diagram 3 of 6) Front auxiliary hvac control assembly Front passenger window switch (if equipped) G302 (behind left kick panel) Harness, approx 52 cm from c304 breakout) s307 Hvac 1 fuse 9 10a Hvac control assembly Hvac fuse 10 20a Osrvm fuse 2 10a Outside rearview mirror switch (if equipped) Pwr wnd circuit breaker 34 25a Rap relay Rear auxiliary hvac control assembly Rear blower fuse 13 30a S247 Spare fuse 1 Tan To s302 (diagram 6 of 6) To s412 (diagram 6 of 6) Traction control switch Underhood fuse block W/ active handling W/ auxiliary hvac W/ rear auxiliary control W/ rear auxiliary hvac W/o active handling W/o rear auxiliary control Power Distribution Wiring Diagram (6 of 6) for Chevrolet Chevy Express G2006 3500 List of elements for Power Distribution Wiring Diagram (6 of 6) for Chevrolet Chevy Express G2006 3500: 26 (in prp/uf2 harness, 7 cm from breakout for rear fuse block) s312 (in prp/uf2 harness, approx 8 cm from rear fuse block) s303 (in rear hvac harness, approx 20 cm from auxiliary blower motor connector breakout) s412 (or red) (provisional) Auxiliary high speed blower motor relay Auxiliary low speed blower motor relay Auxiliary med speed blower motor relay C321 C409 Dome fluorescent work lamp relay Dome fluorescent work lamps fuse 2 10a From body fuse block (auxiliary 1 fuse 32) (diagram 5 of 6) From body fuse block (rr blower fuse 13) (diagram 5 of 6) Left side front access panel relay 5 Left side rear access panel relay 1 Panel actuator fuse 3 15a Rear fuse block (on left "b" pillar) Red Red (in prp/uf2 harness, approx 15 cm from rear fuse block) s302 Right side access panel relay 6 W/ auxiliary hvac W/ commercial option w/o cutaway W/o auxiliary hvac W/o commercial option W/o commercial option w/ cutaway
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Power Door Locks Wiring Diagram for Chevrolet Chevy Express G2006 3500: 57 (behind left kick panel) (hinged door) (sliding door) A10 A11 B10 B12 Battery b+ Body control module (behind lower right side of dash) Body fuse block (under left front seat) C12 Cargo door latch assembly Cargo unlk fuse 5 10a Cargo unlk relay D12 Door lks fuse 15 20a Door lks relay Door lock ctrl Driver door latch assembly Driver door lock switch Drv lks fuse 7 10a Drv unlk relay E10 E12 Front passenger door latch assembly Front passenger door lock switch G302 (behind left kick panel) G303 G347 (bottom of left "b" pillar) G402 (top of left "d" pillar) Ground Hot at all times Instrument panel cluster Left rear side door lock actuator Left side door contact plate (left "b" pillar) Pass unlk relay Pnk Rear cargo door lock switch Release rly ctrl Remote control door lock receiver (behind center of dash) Rfa fuse 20 10a Right rear side door lock actuator Right side door contact plate (right "b" pillar) S247 S248 S500 S600 S902 Serial data Splice pack sp200 (dash harn, 10 cm from underhood pass-through grommet) Splice pack sp347 Sw lock ctrl Sw unlock ctrl Tan Underhood fuse block (left side of engine compt) Unlock ctrl Unlock rly ctrl
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Automatic Day/Night Mirror Wiring Diagram for Chevrolet Chevy Express G2006 3500: 17 (behind front grille, on radiator support) ambient air temperature sensor Amb air temp sens sig Backup lamp pwr Body control module (behind right side of dash) Exterior lights system G304 (behind right kick panel) Ground Hot in run and start Ign 1 vlt Inside rearview mirror Isrv fuse 26 10a Logic Low ref Pnk S249 Underhood fuse block Underhood fuse block (on left side of engine compt) Power Mirrors Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Power Mirrors Wiring Diagram for Chevrolet Chevy Express G2006 3500: 14 (bottom of left "b" pillar) g347 (left front door harn, 16 cm from driver's outside rearview mirror connector) Body fuse block (under left front seat) Driver Driver outside rearview mirror Hot at all times Osrvm fuse 2 10a Outside rearview mirror switch Passenger Passenger outside rearview mirror Right/ left motor S500 S502 Up/ down motor
POWER SEATS Power Seats Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Power Seats Wiring Diagram for Chevrolet Chevy Express G2006 3500: 32 All- down All-up Back Body fuse block (under left front seat) C1 a12 C2 b5 C2 f12 Down Driver seat adjuster switch Driver seat motors E12 c2 Entire seat For- ward Front down Front passenger seat adjuster switch Front passenger seat motors Front up Front vertical G347 (on bottom of left "b" pillar) Horizontal Hot at all times Nca Pwr seat circuit breaker 60 30a Rear down Rear up Rear vertical Right power seat forward/ rearward motor Right power seat front tilt motor Right power seat rear tilt motor S304 Splice pack Underhood fuse block
POWER WINDOWS Power Windows Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Power Windows Wiring Diagram for Chevrolet Chevy Express G2006 3500: 21 Body control module (lower right side of dash) Body fuse block (on lower left kick panel) Driver window motor Driver window switch E11 F11 G302 (behind left kick panel) G347 (on bottom of left "b" pillar) Hot at all times Interior lights system Left Passenger window motor Passenger window switch Pwr wnd circuit breaker 34 25a Rap relay Right S247 S500 S600 Splice pack sp347 Tan
RADIO Radio Wiring Diagram, with Rear Seat Audio for Chevrolet Chevy Express G2006 3500 List of elements for Radio Wiring Diagram, with Rear Seat Audio for Chevrolet Chevy Express G2006 3500: 58 (coax) (in body harn, (in body harn, 10 cm from c415 breakout) (in body harn, 46 cm from c417 breakout) (in body harn, 52 cm from c417 breakout) 10 cm from chmsl A10 A11 A12 Antenna Antenna in B10 B11 B12 b12 b12 b12 Battery Class 2 data Computer data lines system Conn breakout) D10 c2 Dash lmp dim cntrl G303 (behind left kick panel) Ground Hot at all times Interior lights system Left front door speaker Left rear door speaker Left rear speaker Lf speaker (+) Lf speaker (-) Lr mid spk out + Lr mid spk out - Lr speaker (+) Lr speaker (-) Radio Radio bat fuse 1 15a Rear seat audio control Rem radio cntrl sig Rem radio sig Rem radio sup volt Remote rad volt Rf speaker (+) Rf speaker (-) Right front door speaker Right rear door speaker Right rear speaker Rr mid spk out + Rr mid spk out - Rr speaker (+) Rr speaker (-) Rsa enable signal Rsa switch S248 S450 S451 S452 S453 Tan Underhood fuse block (on left side of engine compartment) Radio Wiring Diagram, without Rear Seat Audio for Chevrolet Chevy Express G2006 3500 List of elements for Radio Wiring Diagram, without Rear Seat Audio for Chevrolet Chevy Express G2006 3500: 47 (coax) (in body harn, 10 cm from c415 breakout) (in body harn, 10 cm from chmsl conn breakout) (in body harn, 46 cm from c417 breakout) (in body harn, 52 cm from c417 breakout) A10 A11 A12 Antenna Antenna in B10 B11 B12 b12 b12 b12 Battery C320 Class 2 data Computer data lines system Cutaway, upfitter D10 c2 G303 (behind left kick panel) Ground Hot at all times Left front door speaker Left rear door speaker (if equipped) Left rear speaker Lf speaker (+) Lf speaker (-) Lr speaker (+) Lr speaker (-) Not used Passenger/ cargo Radio Radio bat fuse 1 15a Rf speaker (+) Rf speaker (-) Right front door speaker Right rear door speaker (if equipped) Right rear speaker Rr speaker (+) Rr speaker (-) S248 S450 S451 S452 S453 Tan Underhood fuse block (left side of engine comptartment)
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Shift Interlock Wiring Diagram for Chevrolet Chevy Express G2006 3500: 12 A/t shift lock control solenoid (right side of steering column, under support bracket) A/t shift lock control switch Btsi bck/up fuse 36 15a Btsi fuse 28 10a G302 (behind left kick panel) Hot in run or start Park acc Park/ neutral position switch (on left side of transmission) Pnk S264 Stoplamp switch (behind left side of dash, above brake pedal) Underhood fuse block (left side of engine compt)
STARTING/CHARGING Charging Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Charging Wiring Diagram for Chevrolet Chevy Express G2006 3500: 26 (not used) (on lower right front of eng) (on right front frame rail, in eng compt) (on right front of eng compt) g106 Battery Battery ind Class 2 serial data E12 Fusible link 3 G104 G105 Generator Generator field duty cycle sig Generator turn on sig c2 Hot in run & start Ign e fuse 22 10a Ign volt Instrument panel cluster Logic Pnk Power distribution system Powertrain control module (pcm) (in eng compt, on left inner fender) Red Sp200 (in dash wiring harn, 10 cm from underhood pass-through grommet breakout) Starting/charging system (starter motor) Underhood fuse block (on left side of eng compt) Starting Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Starting Wiring Diagram for Chevrolet Chevy Express G2006 3500: 34 (on lower right front of eng) (on right front frame rail, in eng compt) (on right front of eng compt) Acc C1 b10 C1 c1 C2 a3 C2 e3 Crank fuse 27 10a Crank volt Eng 1 fuse 23 15a Fusible link 2 G104 G105 G106 Generator Hot at all times Ign a fuse 49 40a Ign b fuse 52 40a Ignition switch Left battery Lock Park/neutral position switch (on left side of transmission) Pnk Power distribution system Powertrain control module (pcm) (in eng compt, on left inner fender) Red Run Run acc Start Starter enable relay ctrl Starter motor Starter relay 61 Underhood fuse block (on left side of eng compt)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500: 37 (behind left kick panel) g301 Airbag fuse 37 10a Class 2 serial data signal Control Exterior lights system Ground Heavy duty High control Hot in run or start I/p lamps dimming control I/p module disable switch signal I/p module suppression indicator control Ignition 1 volt Ignition 1 voltage Inflatable restraint i/p module Inflatable restraint i/p module (light duty) Inflatable restraint i/p module disable switch Inflatable restraint sensing/diagnostic module (under left front seat) Inflatable restraint steering wheel module Inflatable restraint steering wheel module (light duty) Inflatable restraint steering wheel module coil Interior lights system Light duty Logic Low control Low reference Nca Off Pnk Pnk pnk Shorting bar Signal Stage 1 Stage 2 Tan Twisted pair wires Underhood fuse block (on left side of eng compt) Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500: 40 A11 Air bag Airbag off Airbag on Class 2 (sdm) Class 2 serial data Data link connector (under left side of dash) G303 (behind left kick panel) G347 (left side of passenger compt, lower "b" pillar) Grd Ign Ign 1 + Ign 1 volt Inflatable restraint front end sensor (on lower center of radiator support) Inflatable restraint passenger airbag on/off indicator Inflatable restraint passenger presence system (pps) module Inflatable restraint passenger presence system (pps) sensor Instrument panel cluster Left inflatable restraint seat position switch (on left seat track) Left seat belt pretensioner Left seat belt switch (closed with seat belt buckled) (in left front seat belt latch) Light duty Nca Not used Off Off ind On ind Pnk Right inflatable restraint seat position switch (on right seat track) Right seat belt pretensioner Right seat belt switch (closed with seat belt buckled) (in right front seat belt latch) S313 (in body harn, 11 cm from c307) Sdm Seat belt Seat belt ind Serial Shorting bar Splice pack sp 347 Splice pack sp200 (in dash wiring harn, 10 cm from underhood pass-through grommet breakout) Twisted pair wires
TRANSMISSION A/T Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for A/T Wiring Diagram (1 of 2) for Chevrolet Chevy Express G2006 3500: 62 (behind lower right side of dash) body control module (left side of transmission) park/neutral position switch (not used) (under left side of dash) data link connector +5v 1-2 ss ctrl 2-3 ss ctrl 3-2 ss ctrl A10 At iss high sig At iss low sig Automatic transmission input shaft speed sensor (4l80e/4l85e) (on left side of transmission) B11 B12 Brk sw sig Cls 2 data Ect sig Engine coolant temperature sensor (on left side of engine) Front high sig Front low sig G102 (left rear of engine) G103 (right rear of engine) G302 (behind left kick panel) Gnd Hot at all times Hot in accy, run & start Hot in run & start Ign Ign 0 fuse 6 10a Instrument panel cluster Pc sol hi ctrl Pc sol lo ctrl Pcm batt fuse 2 20a Pcm ign 1 fuse 38 15a Pnk Powertrain control module (in engine compt, on left inner fender) Press sens sig Prnd a sig Prnd b sig Prnd c sig Prnd p sig Prndl indicator Range b Range c Ref low S101 S102 S247 Serial data Sp200 (in dash wiring harn, 10cm from underhood pass- through grommet breakout) Tan Tcc pwm ctrl Tcc sol ctrl Tft sens sig Throttle position sensor (on left side of throttle body) Tow/ haul switch Tow/haul indicator Tow/haul switch Tp sens sig Under- hood fuse block Vehicle speed sensor (4l60e/4l65e) (on right side of transmission) Vehicle speed sensor (4l80e/4l85e) (on left side of transmission) A/T Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500 List of elements for A/T Wiring Diagram (2 of 2) for Chevrolet Chevy Express G2006 3500: 24 (4l60e/ 1-2 sol 2-3 sol 3-2 sol A red A red 4l65e) A/t fluid pressure manual valve position switch Automatic transmission C12 Hot in run & start Ign e fuse 22 10a M tan N pnk Pc sol valve Pnk Red Rev S (4l60e/4l65e) Stop- lamp switch (above brake pedal) Tan Tcc pwm sol Tcc sol Tft sensor Underhood fuse block
TRUNK, TAILGATE, FUEL DOOR Access Panel Release Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Access Panel Release Wiring Diagram for Chevrolet Chevy Express G2006 3500: 24 Access panel actuator left front side front (behind left front access panel) Access panel actuator left front side rear (behind left front access panel) Access panel actuator left rear side front (behind left rear access panel) Access panel actuator left rear side rear (behind left rear access panel) Access panel actuator right side front (behind right front access panel) Access panel actuator right side rear (behind right rear access panel) Access panel left side front relay control Access panel left side rear relay control Access panel relay left side front relay 5 Access panel relay left side rear relay 1 Access panel relay right side rear relay 6 Access panel right side rear relay control Body control module (behind lower right side of dash) G403 (in center of left "d" pillar) Hot at all times Panel actuator fuse 3 15 a Pnk Rear fuse block (left "b" pillar) S300 S303 S309 (in prp/uf2 harness, between left side front access panel actuators) S408 (in prp/uf2 harness, between left side rear access panel actuators) S409 (in prp/uf2 harness, 88 cm from right dome work lamp connector breakout) Tan
WARNING SYSTEMS Warning Systems Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Warning Systems Wiring Diagram for Chevrolet Chevy Express G2006 3500: 56 (behind left kick panel) g302 (behind left kick panel) g303 A (w/o pwr driver seat) (w/ pwr driver seat) A10 A11 A12 B10 B11 B12 Battery Body control module (bcm) (behind lower right side of dash) Brake ind Brake warn ind ctrl Chime module (behind center of dash) Class 2 (ebcm) Class 2 (sdm) Class 2 serial data Connector (dlc) (partial) (under left side of dash) D10 Data link Exterior lights system G347 (bottom of left "b" pillar) Ground Headlamp & panel dimmer switch Headlamps on signal Hot at all times Ign Ignition key alarm switch (inside top of steering column) Inflatable restraint sensing & diagnostic module (sdm) (under left front seat) Instrument panel cluster (ipc) Key in switch signal Left front seat belt switch Left seat belt switch signal Left turn signal Logic Nca Optional Park brake sw signal Park brake switch (under left side of dash) Power brake (p/b) booster fluid flow alarm switch (near power steering pump, in outlet hose) Power brake (p/b) booster fluid pressure alarm switch (near power brake booster, in booster inlet hose) Radio Radio bat fuse 1 15a Right turn signal S247 S248 S264 S304 (w/ pwr driver seat) Seat belt ind Serial data Sp200 (in dash wiring harness, 10 cm from underhood pass-through grommet breakout) Sp347 Tan Underhood fuse block (on left side of engine compartment) W/ radio W/o radio
WIPER/WASHER Wiper/Washer Wiring Diagram for Chevrolet Chevy Express G2006 3500 List of elements for Wiper/Washer Wiring Diagram for Chevrolet Chevy Express G2006 3500: 25 Accessory voltage C10 Frt wpr fuse 47 25a G302 (behind left kick panel) Ground Hot at all times Hot in run and acc Lsd Mist Off Pnk Pulse S247 S264 Turn signal multi- function switch Underhood fuse block (on left side of engine compt) Wash Windshield washer fluid pump (on left front of eng compt, at washer reservoir) Windshield washer relay cntrl Windshield wiper high signal Windshield wiper motor (on left side of firewall) Windshield wiper switch signal Windshield wiper/ washer switch Wsw fuse 41 15a Wsw relay 53
