Chevrolet·Express·2005 Chevrolet Express·Wiring
Wiring diagram

2005 Chevrolet Express — power distribution

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Power distribution

A 125A 15A 30A B C 20A 15A 15A 15A 10A 15A 10A 15A 20A 15A 10A 40A 30A B 20A 15A 60A 30A STARTER FUSIBLE LINK C BATTERY GENERATOR FUSIBLE LINK B UNDERHOOD FUSE BLOCK AUXILIARY POWER OUTLET 1 AUXILIARY POWER OUTLET 2 TRAILER WIRING TRAILER WIRING DATA LINK CONNECTOR (DLC) POWERTRAIN CONTROL MODULE (PCM) BLOWER MOTOR RESISTOR ASSEMBLY TURN SIGNAL/ HAZARD FLASHER MODULE STOP LAMP SWITCH REMOTE CONTROL DOOR LOCK RECEIVER INSTRUMENT PANEL CLUSTER (IPC) ELECTRONIC BRAKE CONTROL MODULE (EBCM) UNDERHOOD FUSE BLOCK BODY FUSE BLOCK BODY CONTROL MODULE (BCM) RADIO CHIME HVAC CONTROL ASSEMBLY FRONT PASSENGER SEAT ADJUSTER SWITCH DRIVER SEAT ADJUSTER SWITCH VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) RIGHT TRAILER STOP/TURN RELAY LEFT TRAILER STOP/TURN RELAY B1 C A F C1 57 C1 C5 C2 F12 30 30 C2 C3 B2 F F C1 A12 C2 F12 E12 C3 A C1 C1 F C2 A12 C1 C C5 D 15 B1 B5 A4 D10 B10 C2 A10 C2 D1 B3 1 J C2 F1 A6 C C 16 A F2 A E2 B2 E10 B F10 A B C6 C2 B7 C1 B C7 A C1 20 C3 A5 A10 C1 RED/WHT RED/WHT BLK RED/BLK RED/BLK RED/BLK RED/WHT RED/WHT RED/BLK RED/BLK ORG ORG RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT ORG 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 BLK BLK RED RED BLK RED (NOT USED) (NOT USED) W/O CIGAR LIGHTER (NOT USED) W/ CIGAR LIGHTER (BLUNT CUT) (BLUNT CUT) (W/ ACTIVE HANDLING) (W/O ACTIVE HANDLING) (IF EQUIPPED) W/ REAR WINDOW DEFOGGER/ HEATED MIRRORS (W/O RADIO) (W/ RADIO) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) G304 MEGA FUSE 65 SPARE FUSE 64 RFA FUSE 20 PCM BAT FUSE 2 BLOW FUSE 51 ABS FUSE 48 IPC FUSE 31 TRLR FUSE 13 AUX PWR FUSE 29 STOP LP FUSE 7 CIGAR FUSE 30 TRLR FUSE 50 FLASHER FUSE 14 CIGAR LIGHTER PWR SEAT CIRCUIT BREAKER 60 RADIO BAT FUSE 1 TRL STOP/TRN FUSE 17 TBC 4 FUSE 11 RR DEF/HTD MIR FUSE 8 TBC 3 FUSE 16 TBC FUSE 19 TBC 2 FUSE 18 (ON LEFT SIDE OF ENGINE COMPT) (BEHIND RIGHT KICK PANEL) (ON LEFT SIDE OF ENGINE COMPT) S249 TO BODY FUSE BLOCK (DOOR LKS FUSE 15) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (TBC FUSE 19) (DIAGRAM 1 OF 6) FROM UNDERHOOD FUSE BLOCK (RFA FUSE 20) (DIAGRAM 1 OF 6) TO UNDERHOOD FUSE BLOCK (CAN VENT FUSE 34) (DIAGRAM 2 OF 6)
10A G 10A A 50A 20A 30A D 10A 10A 10A 10A 10A C 10A 10A 15A 20A 15A 40A 40A D F E UNDERHOOD FUSE BLOCK SPARE RELAY 55 HDLP HIBM RELAY HDLP LOBM RELAY EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT SOLENOID LEFT HEADLAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP RIGHT HIGH BEAM HEADLAMP RIGHT HEADLAMP LEFT HEADLAMP RIGHT HEADLAMP RIGHT LOW BEAM HEADLAMP UNDERHOOD FUSE BLOCK HORN RELAY WPR RELAY FUEL PUMP RELAY SPARE RELAY 62 A/C RELAY STARTER RELAY BODY FUSE BLOCK PASS UNLK RELAY AUXILIARY RELAY DOOR LKS RELAY DRV UNLK RELAY CARGO UNLK RELAY RR DEFOG RELAY C4 R S A A A A F E C1 E6 A B A A B A C5 B RED/BLK LT GRN/BLK LT GRN/BLK LT GRN/BLK DK GRN/WHT DK GRN/WHT DK GRN/WHT TAN/WHT TAN/WHT TAN/WHT YEL YEL RED/WHT YEL RED/BLK RED/BLK COMPOSITE COMPOSITE SEALED SEALED COMPOSITE COMPOSITE SEALED SEALED CAN VENT FUSE 34 LEFT HIBM FUSE 44 RIGHT LOBM FUSE 42 LEFT LOBM FUSE 43 RIGHT HIBM FUSE 45 IGN B FUSE 52 SPARE FUSE 33 A/C FUSE 32 FUEL PUMP FUSE 12 HORN FUSE 15 IGN A FUSE 49 WPR FUSE 41 DOOR LKS FUSE 15 DRV LKS FUSE 7 CARGO LKS FUSE 5 HTD MIR/DEFOG FUSE 12 AUXILIARY 2 FUSE 33 (ON LEFT SIDE OF ENGINE COMPT) (ON LEFT SIDE OF ENGINE COMPT) (UNDER LEFT FRONT SEAT) FROM UNDERHOOD FUSE BLOCK (PWR SEAT CIRCUIT BREAKER 60) (DIAGRAM 1 OF 6) TO UNDERHOOD FUSE BLOCK (IGN A FUSE 49) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (HDLP HIBM RELAY) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (MEGA FUSE 65) (DIAGRAM 1 OF 6) TO IGNITION SWITCH (DIAGRAM 3 OF 6) TO BODY FUSE BLOCK (PARK LP RELAY) (DIAGRAM 3 OF 6)
15A 10A 10A 10A M 15A G 10A E F K H 10A 10A 10A 10A 10A L 15A 15A 15A 15A ACC LOCK ACC RUN LOCK START OFF OFF START RUN LOCK START RUN ACC OFF OFF START RUN ACC LOCK OFF ACC LOCK RUN START J I UNDERHOOD FUSE BLOCK PARK/ NEUTRAL POSITION (PNP) SWITCH INSIDE REARVIEW MIRROR INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH BODY CONTROL MODULE (BCM) INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE POWERTRAIN CONTROL MODULE (PCM) HEATED OXYGEN SENSOR (HO2S) BANK 2 SENSOR 1 HEATED OXYGEN SENSOR (HO2S) BANK 2 SENSOR 2 UNDERHOOD FUSE BLOCK HEATED OXYGEN SENSOR (HO2S) BANK 1 SENSOR 2 HEATED OXYGEN SENSOR (HO2S) BANK 1 SENSOR 1 STEERING WHEEL SPEED/ POSITION SENSOR CRUISE CONTROL MODULE THROTTLE CONTROL ACTUATOR MODULE BODY FUSE BLOCK CTSY LP RELAY PARK LP RELAY STOP LAMP SWITCH UNDERHOOD FUSE BLOCK (PROVISIONAL) INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH RIGHT TAIL/STOP & TURN SIGNAL LAMP LEFT TAIL/STOP & TURN SIGNAL LAMP LICENSE LAMP RIGHT FRONT MARKER LAMP LEFT FRONT MARKER LAMP RIGHT FRONT PARK/TURN SIGNAL LAMP LEFT FRONT PARK/TURN SIGNAL LAMP LEFT TAILLAMP ASSEMBLY RIGHT TAILLAMP ASSEMBLY 7 F F1 C2 A C1 A D1 S C320 C1 C2 C3 C4 D1 B6 A1 K L F3 J E1 C M A F C405 B A B A B 1 C4 A4 B8 E4 C2 D4 13 C5 A7 C1 19 7 C1 E2 C3 A6 C2 D3 A3 C1 B3 C405 H E C2 A1 10 9 11 C3 A9 C1 F11 C3 B1 E3 C3 D D C1 F1 E1 D D C2 E3 E G D F C B A BRN PNK PNK BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN NCA NCA LT GRN LT GRN/BLK RED/BLK PNK PNK PNK PNK PNK PNK LT GRN LT GRN LT GRN LT GRN/BLK PNK LT GRN DK GRN PNK PNK PNK PNK PNK PNK PNK RED/BLK NCA NCA NCA NCA NCA NCA NCA YEL ORG WHT BRN PNK (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (W/ TEMP DISPLAY) (HEAVY DUTY) (W/O ACTIVE HANDLING) (W/ ACTIVE HANDLING) (IF EQUIPPED) (RV/UPFITTER) TRAILER WIRING CUTAWAY (BLUNT CUT) (NOT USED) (RV/UPFITTER) TRAILER WIRING CUTAWAY (HEAVY DUTY) (NOT USED) (BLUNT CUT) IGNITION SWITCH PCM IGN 1 FUSE 38 ISRV FUSE 26 SIR FUSE 37 SPARE FUSE 35 BTSI/BU FUSE 36 O2B FUSE 39 TBC IGN 1 FUSE 24 O2A FUSE 40 SPARE FUSE 25 REVERSE PARK ACC BTSI FUSE 28 TRLR BU FUSE 5 CTSY LP/SEO FUSE 3 UPFTR PRK FUSE 16 RR PRK FUSE 20 FR PRK FUSE 22 TRLR PRK FUSE 21 LR PRK FUSE 18 (ON LEFT SIDE OF ENGINE COMPT) (UNDER LEFT FRONT SEAT) FROM UNDERHOOD FUSE BLOCK (IGN A FUSE 49) (DIAGRAM 2 OF 6) FROM UNDERHOOD FUSE BLOCK (IGN B, FUSE 52) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (CRANK FUSE 27) (DIAGRAM 4 OF 6) TO BODY FUSE BLOCK (BRKS FUSE 11) (DIAGRAM 5 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) TO UNDERHOOD FUSE BLOCK (ENG 2 FUSE 21) (DIAGRAM 4 OF 6) FROM BODY FUSE BLOCK (AUXILIARY 2 FUSE 33) (DIAGRAM 2 OF 6) TO BODY FUSE BLOCK (AUXILIARY 1 FUSE 32) (DIAGRAM 5 OF 6)
L 25A H I K 10A 10A 10A 10A 15A 10A UNDERHOOD FUSE BLOCK A/C RELAY EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID STOP LAMP SWITCH FUEL INJECTOR 7 FUEL INJECTOR 3 FUEL INJECTOR 6 FUEL INJECTOR 1 INSTRUMENT PANEL CLUSTER FUEL INJECTOR 6 FUEL INJECTOR 4 FUEL INJECTOR 2 FUEL INJECTOR 8 TURN SIGNAL SWITCH CRUISE CONTROL ON/OFF SWITCH TURN SIGNAL/ MULTIFUNCTION SWITCH PARK/ NEUTRAL POSITION (PNP) SWITCH MASS AIR FLOW (MAF) SENSOR IGNITION COIL IGNITION COIL 2 IGNITION COIL 4 IGNITION COIL 8 IGNITION COIL 6 IGNITION COIL MODULE IGNITION COIL 3 IGNITION COIL 1 IGNITION COIL 7 IGNITION COIL 5 UNDERHOOD FUSE BLOCK BODY CONTROL MODULE (BCM) POWERTRAIN CONTROL MODULE (PCM) WINDSHIELD WIPER MOTOR AUTOMATIC TRANSMISSION B C3 C175 E C4 B3 A3 C1 C1 75 59 C2 C2 E5 A2 A3 C10 C2 F4 A4 F2 A11 F3 B10 12 B A A A B A D A E A D D D D D D D D C2 E12 C12 C2 B5 B C1 C4 A C E4 C1 B4 C4 D4 C10 E10 D10 A A A L A J A H YEL PNK YEL PNK PNK PPL BRN WHT YEL YEL YEL PNK PNK PNK PNK PPL 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 PNK PNK PNK PNK PNK PNK (EXCEPT 4.3L) (4.3L) (EXCEPT 4.3L) (4.3L) (EXCEPT 4.3L) (4.3L) (EXCEPT 4.3L) (4.3L) (EXCEPT 4.3L) (4.3L) (EXCEPT 4.3L) (4.3L) (EXCEPT 4.3L) (EXCEPT 4.3L) (4.8L/5.3L/ 6.0L) (4.3L) (4.8L/5.3L/ 6.0L) (4.3L) (NOT USED) (NOT USED) ENG 2 FUSE 21 IGN E FUSE 22 ENG 1 FUSE 23 CRANK FUSE 27 IGN 0 FUSE 6 FR WPR FUSE 47 TBC ACC FUSE 46 (ON LEFT SIDE OF ENG COMPT) (IN EVEN IGNITION COIL MODULE JUMPER HARNESS, ON TOP RIGHT SIDE OF ENGINE) (IN ODD IGNITION COIL MODULE JUMPER HARNESS, ON TOP LEFT SIDE OF ENGINE) (ON LEFT SIDE OF ENG COMPT) S185 S184 FROM UNDERHOOD FUSE BLOCK (SIR FUSE 37) (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6)
N O 25A 10A 50A M 30A 20A J 10A 10A BODY FUSE BLOCK AUXILIARY RELAY UNDERHOOD FUSE BLOCK (PROVISIONAL) HVAC CONTROL ASSEMBLY AIR TEMPERATURE ACTUATOR ELECTRONIC BRAKE CONTROL MODULE (EBCM) HVAC CONTROL ASSEMBLY TRACTION CONTROL SWITCH FRONT AUXILIARY HVAC CONTROL ASSEMBLY FRONT AUXILIARY HVAC CONTROL ASSEMBLY REAR AUXILIARY HVAC CONTROL ASSEMBLY AUXILIARY HVAC CONTROL PROCESSOR BODY CONTROL MODULE AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY MED SPEED BLOWER MOTOR RELAY AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY MODE ACTUATOR BODY FUSE BLOCK (PROVISIONAL) DRIVER WINDOW SWITCH FRONT PASSENGER WINDOW SWITCH OUTSIDE REARVIEW MIRROR SWITCH ELECTRONIC BRAKE CONTROL MODULE (EBCM) F7 C1 C1 F1 B3 C2 B E C4 E C222 C5 C2 A E E C2 A9 F11 E11 E7 C1 A2 A1 A B C2 C2 C2 C407 E G G G J 10 C3 B C2 E C3 E1 C2 A9 C1 C4 C1 E8 B10 C2 10 10 D2 C2 F10 F9 E2 D4 BLK BLK TAN RED/BLK RED/BLK BRN RED/BLK (OR RED) RED/WHT DK GRN DK GRN ORG RED/BLK ORG DK GRN DK GRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN ORG BRN BRN BRN BRN BRN BRN BRN W/ REAR AUXILIARY CONTROL W/ AUXILIARY HVAC W/ REAR AUXILIARY HVAC W/O REAR AUXILIARY CONTROL (W/ OUTSIDE HEATED MIRRORS & REAR WINDOW DEFOGGER) (W/O RV UPFITTER OPTION) (W/ RV UPFITTER OPTION) (NOT USED) (NOT USED) W/O ACTIVE HANDLING W/ ACTIVE HANDLING (RV/UPFITTER) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) G302 BRKS FUSE 11 HVAC 1 FUSE 9 HVAC FUSE 10 WND RAP RELAY 23 AUXILIARY 1 FUSE 32 NOT AVAILABLE FUSE 1 OSRVM FUSE 2 PWR WND CIRCUIT BREAKER 34 RR BLOWER FUSE 13 (IN FRONT HEADLINER HARNESS, APPROX 52 CM FROM C304 BREAKOUT) (IN UPFITTER HVAC CONTROL HARNESS, APPROX 88 CM FROM C303 BREAKOUT) (IN REAR HVAC HARNESS, APPROX 13 CM FROM AUXILIARY BLOWER MOTOR CONNECTOR BREAKOUT) (BEHIND LEFT KICK PANEL) S307 S307 S405 S247 FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM BODY FUSE BLOCK (CTSY LP/SEO FUSE 3) (DIAGRAM 3 OF 6) TO S412 (DIAGRAM 6 OF 6) TO S302 (DIAGRAM 6 OF 6)
N O 10A 15A (PROVISIONAL) AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY MED SPEED BLOWER MOTOR RELAY (PROVISIONAL) REAR FUSE BLOCK REAR FUSE BLOCK RIGHT SIDE ACCESS PANEL RELAY 6 LEFT SIDE FRONT ACCESS PANEL RELAY 5 LEFT SIDE REAR ACCESS PANEL RELAY 1 DOME FLUORESCENT WORK LAMP RELAY A1 A C321 C1 10 6 1 5 11 15 C1 C1 C1 C409 A ORG (OR RED) RED/BLK RED/WHT RED/WHT RED/WHT RED/WHT RED/BLK RED ORG RED RED ORG ORG ORG ORG ORG ORG ORG ORG RED/WHT RED/WHT W/O AUXILIARY HVAC W/ AUXILIARY HVAC W/ COMMERCIAL OPTION W/O COMMERCIAL OPTION PANEL ACTUATOR FUSE 3 DOME FLUORESCENT WORK LAMPS FUSE 2 (IN REAR HVAC HARNESS, APPROX 20 CM FROM AUXILIARY BLOWER MOTOR CONNECTOR BREAKOUT) (IN PRP/UF2 HARNESS, APPROX 15 CM FROM REAR FUSE BLOCK) (ON LEFT "B" PILLAR) (IN PRP/UF2 HARNESS, 7 CM FROM BREAKOUT FOR REAR FUSE BLOCK) (IN PRP/UF2 HARNESS, APPROX 8 CM FROM REAR FUSE BLOCK) (ON LEFT "B" PILLAR) S412 S302 S312 S303 FROM BODY FUSE BLOCK (RR BLOWER FUSE 13) (DIAGRAM 5 OF 6) FROM BODY FUSE BLOCK (AUXILIARY 1 FUSE 32) (DIAGRAM 5 OF 6)