Chevrolet·Express Awd·2008 Chevrolet Express AWD·Wiring
Wiring diagram

2008 Chevrolet Express AWD — power distribution

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Power distribution

A 40A 50A 10A 40A 10A 10A 10A 10A 10A 15A 10A 20A 20A 10A 10A 10A 20A 30A 30A 30 87 G 86 85 F 50A STARTER MOTOR BATTERY GENERATOR UNDERHOOD FUSE BLOCK ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) BODY CONTROL MODULE (BCM) BLOWER MOTOR RESISTOR ASSEMBLY DATA LINK CONNECTOR (DLC) TRAILER CONNECTOR EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE TRANSMISSION CONTROL MODULE (TCM) FUEL PUMP FLOW CONTROL MODULE INSTRUMENT PANEL CLUSTER (IPC) BODY FUSE BLOCK UPFITTER PROVISIONAL 16 17 X2 3 X2 2 38 1 13 18 B X1 B X2 X5 X1 44 3 X2 47 43 27 9 15 21 X1 20 A X3 3 2 X2 2 X4 3 1 2 20 4 11 A A C C 7 21 X1 47 X3 19 24 X2 X3 X2 6 A C A 32 20 32 1 E X2 62 X1 60 B B X222 X321 22 RED/WHT RED/BLK RED/WHT RED RED RED RED RED RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT RED/BLK RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT BLK BLK BLK RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT RED/BLK BLK BRN BRN BRN BRN BRN BLK BLK W/ ACTIVE BRAKE CONTROL W/O ACTIVE BRAKE CONTROL (TRAILER BLUNT CUT) W/ TRUCK TRAILER W/O CIGAR LIGHTER W/ CIGAR LIGHTER (CUTAWAY, AMBULANCE & RV UPFITTERS) (W/ ODOMETER SECURITY WIRING PROVISION (SEO)) (5.3L) W/ RV UPFITTER W/ CUTAWAY UPFITTER W/ RV UPFITTER (UPFITTER BLUNT CUT) G304 G302 FUSIBLE LINK 3 FUSIBLE LINK 2 ABS MDL FUSE 60 BCM 1 FUSE 20 BCM 4 FUSE 22 BCM 7 FUSE 25 ECM BATT FUSE 54 FRT BLWR FUSE 66 BCM 3 FUSE 26 BCM 6 FUSE 23 ABS MTR FUSE 61 BCM 2 FUSE 37 BCM 5 FUSE 27 SEO FUSE 21 TCM BATT FUSE 44 LTR/DLC FUSE 38 FCSM BATT FUSE 15 AUX PWR OUTLET FUSE 33 TRLR WRG FUSE 35 CNSTR VENT SOL FUSE 17 TRLR WRG FUSE 62 CIGAR LIGHTER CENTER CONSOLE 2 ACCESSORY POWER OUTLET CENTER CONSOLE 1 ACCESSORY POWER OUTLET UPFTR AUX 2 RELAY 42 UPFTR AUX 2 FUSE 35 J249 J247 (ON LEFT SIDE OF ENGINE COMPT) (UNDER LEFT FRONT SEAT) (BEHIND RIGHT KICK PANEL) (BEHIND LEFT KICK PANEL) TO HIGH BEAM PCB RELAY (DIAGRAM 2 OF 4) FROM CMPS FUSE 2 (DIAGRAM 4 OF 4) FROM RUN RELAY 39 (DIAGRAM 4 OF 4)
A 30 85 B 25A 15A 87 86 15A 10A 10A 10A 125A C 85 30 30 87 20A 20A STOP LAMPS PCB RELAY WASHER PCB RELAY DRL PCB RELAY A/C CMPRSR RELAY 74 TRAILER RH STOP/TURN PCB RELAY HIGH BEAM PCB RELAY LO BEAM PCB RELAY HORN PCB RELAY TRAILER LH STOP/TURN PCB RELAY CRNK RELAY 73 FUEL PUMP RELAY 72 HI WPR RELAY 70 WPR RELAY 7 ENGINE CONTROL MODULE (ECM) HEATED OXYGEN SENSOR (HO2S) BANK 2 SENSOR 1 HEATED OXYGEN SENSOR (HO2S) BANK 1 SENSOR 2 HEATED OXYGEN SENSOR (HO2S) BANK 2 SENSOR 2 HEATED OXYGEN SENSOR (HO2S) BANK 1 SENSOR 1 CENTRAL SEQUENTIAL FUEL INJECTION (CENTRAL SFI) EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID VALVE MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSOR UNDERHOOD FUSE BLOCK IGNITION CONTROL MODULE (ICM) FUEL INJECTOR 1 IGNITION COIL 2 FUEL INJECTOR 6 IGNITION COIL 6 FUEL INJECTOR 8 FUEL INJECTOR 7 IGNITION COIL 5 IGNITION COIL 4 IGNITION COIL 7 IGNITION COIL 8 IGNITION COIL 1 FUEL INJECTOR 2 FUEL INJECTOR 4 FUEL INJECTOR 3 FUEL INJECTOR 5 IGNITION COIL 3 59 X1 5 35 26 8 16 X7 J L H D B E X1 47 A B 73 X1 13 9 X6 D D D D 6 F 24 29 33 X1 30 34 25 A A A A D D D D D D D D A A A A PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK NCA NCA NCA RED/BLK PNK PNK PNK NCA PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK (CUTAWAY) (MANUAL A/C) (W/ TRUCK TRAILER) (W/ TRUCK TRAILER) EXCEPT 4.3L 4.3L (4.3L) (EXCEPT 4.3L) EXCEPT 4.3L 4.3L EXCEPT 4.3L WPR FUSE 39 PWR/TRN RELAY 76 MEGA FUSE 77 ECM PWR/TRN FUSE 50 MAF/CNSTR VENT FUSE 49 O2 SNSR 1 FUSE 46 V6 FUEL INJ FUSE 59 O2 SNSR 2 FUSE 56 EVEN IGN INJ FUSE 52 ODD IGN INJ FUSE 55 J120 J184 J185 (IN ENGINE HARNESS, 5 CM FROM X101 BREAKOUT) (ON LEFT SIDE OF ENGINE COMPT) (IN ODD IGNITION/COIL MODULE JUMPER HARNESS, ON TOP LEFT SIDE OF ENGINE) (IN EVEN IGNITION/ COIL MODULE JUMPER HARNESS, ON TOP RIGHT SIDE OF ENGINE) FROM TRLR WRG FUSE (DIAGRAM 1 OF 4) TO RUN/CRNK RELAY 69 (DIAGRAM 3 OF 4) TO BODY FUSE BLOCK (DIAGRAM 4 OF 4)
START ACC RUN OFF START OFF ACC RUN D START ACC RUN START RUN OFF OFF ACC E 10A 45A 10A 10A B 30 15A 10A 15A 10A 86 85 10A 15A 87 FUEL PUMP FLOW CONTROL MODULE ELECTRONIC BRAKE CONTROL MODULE (EBCM) BODY CONTROL MODULE (BCM) THEFT DETERRENT MODULE (TDM) REAR FUSE BLOCK RIGHT ACCESS PANEL RELAY 6 LEFT REAR ACCESS PANEL RELAY 1 LEFT FRONT ACCESS PANEL RELAY 5 ENGINE CONTROL MODULE (EDM) TRANSMISSION CONTROL MODULE (TCM) FLUORESCENT WORK LAMP RELAY UNDERHOOD FUSE BLOCK INFLATABLE RESTRAINT I/P MODULE INDICATOR INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH AUTOMATIC TRANSMISSION STOP LAMP SWITCH INSTRUMENT PANEL CLUSTER (IPC) TRANSMISSION CONTROL MODULE (TCM) FUEL PUMP FLOW CONTROL MODULE INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE (SDM) STEERING WHEEL SPEED/ POSITION SENSOR ENGINE CONTROL MODULE (ECM) 17 19 12 4 19 X3 6 5 4 X1 2 2 3 14 21 1 2 5 6 10 15 11 X4 21 19 X1 X1 3 11 18 1 A1 C1 56 X3 55 50 X3 54 40 X1 X3 58 58 X1 45 X3 16 X2 49 X1 57 X1 4 B 32 7 X1 19 19 31 B 15 E X175 LT BLU LT BLU LT BLU LT BLU WHT RED/ WHT RED/ RED/BLK LT BLU RED RED ORG ORG WHT PNK PNK BRN BRN RED/ WHT BRN ORG ORG ORG ORG ORG YEL BLU DK BLU DK BLU DK ORG LT BLU ORG ORG PNK PNK PNK YEL PNK PNK PNK PNK BLK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK BLK PNK W/ POWER BRAKE W/ ACTIVE BRAKE CONTROL 5.3L 4.8L & 6.0L W/ CARGO EXCEPT 4.3L 4.3L (W/ ACTIVE CONTROL BRAKE) W/O RV UPFITTER & MANUAL SUPPRESSION W/ MANUAL SUPPRESSION (5.3L) G102 IGNITION SWITCH KEY-IN SWITCH DOME FLUORESCENT WORK LAMPS FUSE 2 PANEL ACTUATOR FUSE 3 RUN/CRNK RELAY 69 STR/WHL SNSR FUSE 36 ECM IGN FUSE 48 BRK SW FUSE 32 FSCM IGN FUSE 11 AIR BAG FUSE 34 IP CLSTR FUSE 30 TCM IGN FUSE 47 TRANS FUSE 51 J203 J319 J205 J302 J115 J303 J312 J102 (IN STEERING COLUMN HARNESS, 27 CM FROM X200 CONNECTOR) (IN CHASSIS HARNESS, 7 CM FROM ECBM BREAKOUT) (IN STEERING COLUMN HARNESS, 30 CM FROM X200 CONNECTOR) (IN PRP/UF2 HARNESS, 15 CM FROM REAR FUSE BLOCK) (IN ENGINE HARNESS, 15 CM FROM X101 BREAKOUT) (ON LEFT "B" PILLAR) (IN PRP/UF2 HARNESS, 7 CM FROM BREAKOUT FOR REAR FUSE BLOCK) (IN PRP/UF2 HARNESS, 8 CM FROM REAR FUSE BLOCK) (ON LEFT SIDE OF ENGINE COMPT) (ON LEFT REAR OF ENGINE) FROM BODY FUSE BLOCK (DIAGRAM 4 OF 4) FROM BODY FUSE BLOCK (DIAGRAM 4 OF 4) FROM MEGA FUSE 77 (DIAGRAM 2 OF 4)
25A 87 85 30 86 50A 30 2A E 10A 30A 2A 10A 10A 15A C 85 10A 30 30A D F G 10A 30 87 86 85 20A 10A BODY FUSE BLOCK ALL DRS LOCK PCB RELAY CGO UNLCK PCB RELAY PASS/CGO UNLCK PCB RELAY DRV UNLCK PCB RELAY UPFTR CTSY LAMPS PCB RELAY BODY CONTROL MODULE (BCM) PASSENGER WINDOW SWITCH DRIVER WINDOW SWITCH UPFITTER PROVISIONAL PRK LAMP RELAY 40 INFLATABLE RESTRAINT FRONT PASSENGER SYSTEM (PPS) PRESENCE SENSOR INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE (SDM) INSTRUMENT PANEL CLUSTER (IPC) DRIVER SEAT ADJUSTER SWITCH OUTSIDE REARVIEW MIRROR SWITCH HVAC CONTROL ASSEMBLY INFLATABLE RESTRAINT VEHICLE ROLLOVER SENSOR PASSENGER SEAT ADJUSTER SWITCH REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) CHIME MODULE RADIO REAR DEFOG RELAY 44 BCK/UP LAMP PCB RELAY AIR TEMPERATURE ACTUATOR HVAC CONTROL ASSEMBLY BODY CONTROL MODULE (BCM) HVAC CONTROL ASSEMBLY ELECTRONIC COMPASS MODULE AUXILIARY BLOWER MOTOR MEDIUM SPEED RELAY AUXILIARY MODE ACTUATOR REAR AUXILIARY HVAC CONTROL ASSEMBLY AUXILIARY BLOWER MOTOR HIGH SPEED RELAY AUXILIARY BLOWER MOTOR LOW SPEED RELAY AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY HVAC CONTROL MODULE FRONT AUXILIARY HVAC CONTROL ASSEMBLY 10 X1 35 13 X2 A C 12 22 X1 28 61 X2 11 X5 X222 A X321 A 47 8 X2 X1 11 X1 5 14 26 31 15 X2 61 X2 10 16 22 60 X2 E 1 F F X3 A 20 1 1 26 25 51 30 C1 C1 C1 10 10 C2 C2 C2 1 G J G 31 1 A X1 30 34 46 10 22 59 E X2 13 X5 B X3 X1 DK GRN DK GRN BLK BLK RED/WHT RED/WHT RED/WHT YEL RED/BLK RED/WHT RED/WHT RED/WHT WHT RED/ RED/WHT RED/BLK RED/BLK RED/BLK RED/WHT RED/WHT RED/WHT RED/BLK RED/BLK WHT WHT BRN BRN BRN RED/WHT BRN BRN BRN RED/WHT RED/WHT BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN RED/WHT BRN BRN BRN BLK BRN BLK ORG RED/ RED/ (W/ CUTAWAY, AMBULANCE & RV UPFITTERS) (W/ AMBULANCE & RV UPFITTERS) W/ ELECTRIC SIDE DOOR LOCK CONTROL W/ RV UPFITTER (NOT USED) (NOT USED) W/ COMMERCIAL TRADESMAN W/ RV UPFITTER W/ CUTAWAY (UPFITTER BLUNT CUT) (IF EQUIPPED) (IF EQUIPPED) W/O RADIO W/ RADIO (W/ ELECTRIC REAR WINDOW DEFOGGER & POWER WINDOWS) (W/O ODOMETER SECURITY WIRING PROVISION (SEO)) (W/ PASSENGER POWER SEAT ADJUSTER) (W/ DRIVER POWER SEAT ADJUSTER) (IF EQUIPPED) (W/ LEFT & RIGHT ROOF SIDE) (W/ LOW TIRE PRESSURE & REMOTE KEYLESS ENTRY) (LIGHT DUTY W/O RV UPFIITTER) (W/ POWER MIRROR & REAR WINDOW DEFOGGER) W/ REAR A/C W/ REAR A/C & AUXILIARY HEATER W/ REAR A/C, AUXILIARY HEATER, PLUMBING & WIRING PROVISION W/ RV UPFITTER & 3406 W/O RV UPFITTER W/ MANUAL A/C, POWER MIRRORS & REAR WINDOW DEFOGGER (W/ REAR WINDOW DEFOGGER, POWER MIRRORS & MANUAL A/C) (IF EQUIPPED) G302 G302 RAP RELAY 43 UPFTR AUX 1 FUSE 36 PWR WDO CIRCUIT BREAKER 45 EMPTY FUSE 19 EMPTY FUSE 20 PWR SEATS CIRCUIT BREAKER 46 IGN SW PK3 MDL FUSE 3 HVAC CNTRL FUSE 12 AIR BAG AOS FUSE 32 RFA/TRM FUSE 11 OSRVM SW FUSE 18 RDO/CHIME FUSE 8 I/P CLSTR FUSE 7 RUN RELAY 39 REAR BLWR FUSE 37 CMPS FUSE FUSE 2 HVAC 1 FUSE 5 HVAC 2 FUSE 1 J247 J247 J405 J307 J412 (UNDER LEFT FRONT SEAT) (BEHIND LEFT KICK PANEL) (IN REAR HVAC HARNESS, 13 CM FROM AUXILIARY BLOWER MOTOR CONNECTOR BREAKOUT) (EXCEPT REAR AUXILIARY & RV UPFITTER: IN FRONT HEADLINER HARNESS, 15 CM FROM X205 BREAKOUT TOWARDS LEFT VANITY MIRROR LAMP CONNECTOR) (W/ REAR AUXILIARY & RV UPFITTER: IN UPFITTER HVAC CONTROL HARNESS, 88 CM FROM X303 BREAKOUT) (EXCEPT RV UPFITTER: IN FRONT HEADLINER HARNESS, 52 CM FROM X304 BREAKOUT) (IN REAR HVAC HARNESS, 20 CM FROM AUXILIARY BLOWER MOTOR CONNECTOR BREAKOUT) (BEHIND LEFT KICK PANEL) TO REAR FUSE BLOCK (DIAGRAM 3 OF 4) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 4) TO J203 (DIAGRAM 3 OF 4) TO UPFTR AUX 2 RELAY 42 (DIAGRAM 1 OF 4)