Chevrolet·Express·2007 Chevrolet Express·Wiring
Wiring diagram

2007 Chevrolet Express — power distribution

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Power distribution

20A A 125A 15A 30A B C 20A 15A 15A 15A 10A 15A 10A 15A 15A 10A 40A 30A B 20A 15A 60A 30A FUSIBLE LINK 3 GENERATOR FUSIBLE LINK 5 FUSIBLE LINK 4 FUSIBLE LINK 2 BATTERY SECONDARY BATTERY FUSIBLE LINK 1 STARTER MOTOR GLOW PLUG CONTROL MODULE (GPCM) AUXILIARY GENERATOR INTAKE AIR HEATER (IAH) MODULE UNDERHOOD FUSE BLOCK AUXILIARY POWER OUTLET 2 AUXILIARY POWER OUTLET 1 DATA LINK CONNECTOR (DLC) TRAILER WIRING TRAILER WIRING TURN SIGNAL/ HAZARD FLASHER MODULE INSTRUMENT PANEL CLUSTER (IPC) ENGINE CONTROL MODULE (ECM) REMOTE CONTROL DOOR LOCK RECEIVER STOP LAMP SWITCH BLOWER MOTOR RESISTOR ASSEMBLY COOLANT HEATER TRANSMISSION CONTROL MODULE (TCM) 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 LEFT TRAILER STOP/TURN RELAY RIGHT TRAILER STOP/TURN RELAY C1 1 C1 C2 A B1 C A F C1 77 C1 C5 C2 F12 30 30 C2 C3 B2 F F C1 A12 C2 F12 E12 C3 A C1 F C2 A12 C1 C C5 D 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 32 C3 A5 A10 C1 RED BLK RED BLK BLK BLK RED RED BLK BLK RED RED BLK BLK NCA RED/WHT RED/WHT RED/WHT BLK RED/BLK RED/BLK RED/BLK (OR RED) RED/WHT RED/WHT RED/BLK RED/BLK ORG ORG 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 (NOT USED) (NOT USED) W/O CIGAR LIGHTER W/ CIGAR LIGHTER (BLUNT CUT) (BLUNT CUT) (W/ ACTIVE HANDLING) (W/O ACTIVE HANDLING) (IF EQUIPPED) (NOT USED) W/ REAR WINDOW DEFOGGER/ HEATED MIRRORS (W/ RADIO) (W/O RADIO) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) G304 UNDERHOOD JUNCTION BLOCK SPARE FUSE 64 MEGA FUSE 65 RFA FUSE 20 FOH/ECM/ TCM BATT FUSE 2 HAZRD FUSE 14 AUX PWR FUSE 29 ABS/VSES FUSE 48 TRLR FUSE 13 LTR FUSE 30 TRLR FUSE 50 BLOW FUSE 51 STOP LP FUSE 7 IPC FUSE 31 CIGAR LIGHTER PWR SEAT CIRCUIT BREAKER 60 RADIO BAT FUSE 1 TBC 3 FUSE 16 TBC FUSE 19 TBC 4 FUSE 11 RR DEF/HTD MIR FUSE 8 TRL STOP/TRN FUSE 17 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 (REAR FOG LAMPS FUSE 34) (DIAGRAM 2 OF 6)
10A 10A 10A 10A 10A 10A G 10A A 50A 20A 30A D 10A 10A C 10A 15A 20A 15A 40A 40A D F E UNDERHOOD FUSE BLOCK REAR FOG LAMPS RELAY 55 HDLP HI BEAM RELAY 56 HDLP LO BEAM RELAY 58 RIGHT HEADLAMP LEFT HEADLAMP LEFT HIGH BEAM HEADLAMP LEFT HEADLAMP RIGHT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP RIGHT HEADLAMP RIGHT LOW BEAM HEADLAMP UNDERHOOD FUSE BLOCK WSW RELAY 53 HORN RELAY 59 A/C RELAY 54 ECM RELAY 62 FUEL PUMP RELAY 57 STARTER RELAY 61 ENGINE CONTROL MODULE (ECM) BODY FUSE BLOCK DRV UNLK RELAY 28 RR DEFOG RELAY 25 DOOR LKS RELAY 30 PASS UNLK RELAY 31 CARGO UNLK RELAY 27 AUXILIARY RELAY 24 D8 5 E8 1 C2 3 76 C1 F6 C1 C4 R S A A A A F E A B A B A C5 B RED/WHT RED/WHT RED/WHT RED/WHT 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 YEL RED/BLK RED/BLK SEALED COMPOSITE SEALED COMPOSITE SEALED SEALED COMPOSITE COMPOSITE REAR FOG LAMPS FUSE 34 LEFT HI BEAM FUSE 44 RIGHT HI BEAM FUSE 45 RIGHT LO BEAM FUSE 42 LEFT LO BEAM FUSE 43 IGN B FUSE 52 HORN FUSE 15 A/C FUSE 32 WSW FUSE 41 FUEL PUMP FUSE 12 ECM FUSE 33 IGN A FUSE 49 ECM ACT FUSE 63 DRV LKS FUSE 7 AUXILIARY 2 FUSE 33 DOOR LKS FUSE 15 HTD MIR/DEFOG FUSE 12 REAR DOOR LKS FUSE 5 (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 HI BEAM 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)
ACC LOCK START RUN RUN START RUN START LOCK ACC ACC LOCK RUN ACC START ACC LOCK RUN START LOCK 10A 15A 10A 10A 10A M 15A G 10A E F K H 10A 10A 10A 10A 10A L 15A 15A 15A J I UNDERHOOD FUSE BLOCK PARK/ NEUTRAL POSITION (PNP) SWITCH INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM (PPS) MODULE INSIDE REARVIEW MIRROR INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE BODY CONTROL MODULE (BCM) ENGINE CONTROL MODULE (ECM) STEERING WHEEL SPEED/ POSITION SENSOR FUEL HEATER TRANSMISSION CONTROL MODULE (TCM) GLOW PLUG CONTROL MODULE (GPCM) UNDERHOOD FUSE BLOCK INFLATABLE RESTRAINT PASSENGER AIRBAG OFF/ON INDICATOR INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH BODY FUSE BLOCK CTSY LP RELAY 26 PARK LP RELAY 29 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 RIGHT FRONT PARK/TURN SIGNAL LAMP LEFT FRONT MARKER LAMP LEFT FRONT PARK/TURN SIGNAL LAMP RIGHT FRONT MARKER LAMP LICENSE LAMP A A B B D G F E B A C C2 52 31 2 B 4 F1 C2 C1 D1 S C320 C1 C2 C3 C4 D1 B6 A1 K M F3 J E1 C L F C405 B A B A A 1 C4 A4 B8 E4 C2 D4 13 C5 A7 C2 21 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 C1 F1 E1 C2 E3 BRN BRN BRN BRN PNK PNK PNK PNK PNK PNK PNK BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN BRN LT GRN LT GRN/BLK RED/BLK PNK PNK PNK PNK PNK BRN LT GRN LT GRN LT GRN LT GRN/BLK PNK LT GRN DK GRN RED/BLK YEL ORG WHT BRN PNK (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) LIGHT DUTY HEAVY DUTY (W/ TEMP DISPLAY) (LIGHT DUTY) (HEAVY DUTY) TRAILER WIRING (RV/UPFITTER) CUTAWAY (NOT USED) (BLUNT CUT) (RV/UPFITTER) TRAILER WIRING CUTAWAY (HEAVY DUTY) (BLUNT CUT) (NOT USED) IGNITION SWITCH ECM/TCM/ GLOW PLUG FUSE 38 ISRVM FUSE 26 AIRBAG FUSE 37 SPARE FUSE 39 SPARE FUSE 40 BTSI/BU FUSE 36 SPARE FUSE 35 TBC IGN 1 FUSE 24 FUEL HTR FUSE 25 REVERSE PARK ACC BTSI FUSE 28 TRLR BU FUSE 5 CTSY LP/SEO FUSE 3 FR PRK FUSE 22 LR PRK FUSE 18 TRLR PRK FUSE 21 RR PRK FUSE 20 UPFTR PRK FUSE 16 (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 (IGN O FUSE 6) (DIAGRAM 4 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 (TBC ACC FUSE 46) (DIAGRAM 4 OF 6) TO UNDERHOOD FUSE BLOCK (SPARE 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)
H I K N N L 25A 10A 10A 10A 10A 10A 10A UNDERHOOD FUSE BLOCK MASS AIR FLOW (MAF) SENSOR PARK/ NEUTRAL POSITION (PNP) SWITCH UNDERHOOD FUSE BLOCK A/C RELAY TURN SIGNAL SWITCH CRUISE CONTROL ON/OFF SWITCH INSTRUMENT PANEL CLUSTER TRANSMISSION CONTROL MODULE (TCM) WINDSHIELD WIPER MOTOR ENGINE CONTROL MODULE (ECM) STOP LAMP SWITCH BODY CONTROL MODULE (BCM) GLOW PLUG CONTROL MODULE (GPCM) AUTOMATIC TRANSMISSION TURN SIGNAL/ MULTIFUNCTION SWITCH C4 A C2 53 11 B C3 C175 E C4 B3 A3 C1 C2 56 7 C1 C2 E5 A2 A3 C10 C2 F4 A4 F2 A11 F3 B10 12 3 C2 E12 C12 C2 B5 B C1 C E4 C1 B4 C4 D4 C10 E10 D10 NCA PNK YEL PNK PNK PNK YEL YEL PNK YEL PNK PNK PPL BRN WHT YEL YEL YEL PNK PNK PNK PPL PNK PNK PNK PNK PNK PNK PNK PNK PNK (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) SPARE FUSE 21 ENG 1 FUSE 23 IGN 0 FUSE 6 CRANK FUSE 27 TBC/TCM ACCY FUSE 46 FR WPR FUSE 47 IGN E FUSE 22 (ON LEFT SIDE OF ENGINE COMPT) (ON LEFT SIDE OF ENGINE COMPT) FROM UNDERHOOD FUSE BLOCK (AIR BAG FUSE 37) (DIAGRAM 3 OF 6) TO IGN E FUSE 22 (DIAGRAM 4 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM ENG 1 FUSE 23 (DIAGRAM 4 OF 6)
1 2 2 1 2 1 50A O P 25A 10A 60A M 30A 20A J 10A 10A BODY FUSE BLOCK AUXILIARY RELAY 24 UNDERHOOD FUSE BLOCK (PROVISIONAL) HVAC CONTROL ASSEMBLY ELECTRONIC BRAKE CONTROL MODULE (EBCM) AIR TEMPERATURE ACTUATOR HVAC CONTROL ASSEMBLY HIGH IDLE SWITCH VACUUM PUMP TRACTION CONTROL SWITCH AUXILIARY HVAC CONTROL PROCESSOR FRONT AUXILIARY HVAC CONTROL ASSEMBLY FRONT AUXILIARY HVAC CONTROL ASSEMBLY REAR AUXILIARY HVAC CONTROL ASSEMBLY BODY CONTROL MODULE AUXILIARY MED SPEED BLOWER MOTOR RELAY AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY MODE ACTUATOR AUXILIARY AIR TEMPERATURE ACTUATOR BODY FUSE BLOCK (PROVISIONAL) FRONT PASSENGER WINDOW SWITCH DRIVER WINDOW SWITCH OUTSIDE REARVIEW MIRROR SWITCH ELECTRONIC BRAKE CONTROL MODULE (EBCM) B C2 11 D 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 BRN BRN BRN BRN 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 ORG BRN BRN BRN BRN BRN BRN BRN W/ REAR AUXILIARY CONTROL W/ REAR AUXILIARY HVAC W/O REAR AUXILIARY CONTROL W/ AUXILIARY HVAC (W/ OUTSIDE HEATED MIRRORS & REAR WINDOW DEFOGGER) (W/O RV UPFITTER OPTION) (W/ RV UPFITTER OPTION) W/ ACTIVE HANDLING W/O ACTIVE HANDLING (NOT USED) (NOT USED) W/O ACTIVE HANDLING W/ ACTIVE HANDLING (RV/UPFITTER) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) G302 HVAC 1 FUSE 9 BRK FUSE 11 HVAC FUSE 10 RAP RELAY 23 AUXILIARY 1 FUSE 32 PWR WND CIRCUIT BREAKER 34 OSRVM FUSE 2 REAR BLOWER FUSE 13 SPARE FUSE 1 (UNDER LEFT FRONT SEAT) (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) (UNDER LEFT FRONT SEAT) (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)
O P 10A 15A (PROVISIONAL) AUXILIARY MED SPEED BLOWER MOTOR RELAY AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY LOW SPEED BLOWER MOTOR RELAY (PROVISIONAL) REAR FUSE BLOCK REAR FUSE BLOCK LEFT SIDE FRONT ACCESS PANEL RELAY 5 RIGHT SIDE ACCESS PANEL RELAY 6 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 RED/BLK 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/ AUXILIARY HVAC W/O AUXILIARY HVAC W/O COMMERCIAL OPTION W/ CUTAWAY W/ COMMERCIAL OPTION W/O CUTAWAY W/O COMMERCIAL OPTION BLUNT CUT 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)