Buick·Lacrosse·2008 Buick LaCrosse·Wiring
Wiring diagram

2008 Buick LaCrosse — power distribution

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Power distribution

2 1 3 4 2 1 4 3 A 15A 25A 25A 40A 30A 50A 40A 50 (8 GA- BLK/WHT) 15A 20A 20A 25A 10A 15A 20A IGN 5A 10A 10A IGN IGN 10A 25A 10A 10A 15A 10A 10A UNDERHOOD FUSE BLOCK BATTERY STARTER GENERATOR ELECTRONIC BRAKE CONTROL MODULE (EBCM) BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE (BCM) TRANSMISSION CONTROL MODULE (TCM) ENGINE CONTROL MODULE (ECM) R/ DEFOG RELAY PASSENGER SEAT ADJUSTER SWITCH OUTSIDE REAR VIEW MIRROR SWITCH DRIVER SEAT LUMBAR SWITCH DRIVER SEAT ADJUSTER SWITCH BODY CONTROL MODULE (BCM) SUNROOF MOTOR INSIDE REARVIEW MIRROR DRIVER HEATED SEAT RELAY DRIVER WINDOW SWITCH PASSENGER HEATED SEAT RELAY PASSENGER WINDOW SWITCH PRK/ LAMP RELAY I/P FUSE BLOCK DATA LINK CONNECTOR (DLC) BODY CONTROL MODULE (BCM) HVAC CONTROL MODULE AUDIO AMPLIFIER EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE INSTRUMENT PANEL CLUSTER (IPC) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) RADIO INFLATABLE RESTRAINT FRONT PASSENGER PRESENCE SYSTEM (PPS) MODULE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) DIGITAL RADIO RECEIVER PARK SWITCH X2 G1 51 X1 E2 F2 X2 X1 G2 G3 F1 X4 F2 X2 E3 E3 X2 X4 F1 X1 32 20 X1 14 C 13 X1 F10 F5 F3 N3 M3 M1 N1 F1 A5 X1 E5 D12 K3 J3 X2 F9 E9 D10 D E12 G A X2 E 13 A A1 X1 A A2 X2 B6 A3 F6 X1 6 3 X2 49 X1 46 6 A2 A2 D E X1 F7 M1 N1 16 X1 15 X1 1 1 X1 1 16 4 50 52 12 X1 B10 X2 E4 F9 X2 X1 F5 X1 E6 C5 E8 ORG YEL YEL RED ORG ORG ORG RED RED RED RED RED RED RED RED RED RED RED RED YEL ORG BLK ORG ORG ORG ORG ORG YEL YEL YEL YEL YEL WHT ORG ORG NCA ORG YEL BLK YEL YEL ORG ORG ORG ORG ORG ORG ORG ORG RED ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG ORG YEL YEL (W/ ABS) W/O SUNROOF W/ SUNROOF (IF EQUIPPED) W/O DRIVER POWER LUMBAR CONTROL SEAT W/ DRIVER POWER LUMBAR CONTROL SEAT (IF EQUIPPED) (IF EQUIPPED) W/O DIGITAL AUDIO SYSTEM W/ DIGITAL AUDIO SYSTEM W/O DIGITAL AUDIO SYSTEM (W/ 9 SPEAKER SYSTEM) (FLOOR CONSOLE FRONT COMPARTMENT) AUTOMATIC A/C MANUAL A/C (W/ ONSTAR) FUSIBLE LINK ECM/ ETC FUSE BATT 4 FUSE ABS SOL FUSE BATT 2 FUSE BATT 1 FUSE WSW/ RVC FUSE BATT 3 FUSE ABS MTR FUSE PWR/ SEAT CIRCUIT BREAKER HTD/ SEAT FUSE PWR/ MIR FUSE PWR/WNDW CIRCUIT BREAKER DR/LCK TRUNK FUSE S/ROOF FUSE RAP RELAY HAZRD FUSE PRK/LAMP FUSE PRK/ SWITCH FUSE HVAC FUSE CANISTER FUSE CHMSL/ BKUP FUSE INT/ ILLUM FUSE ONSTAR/ ALDL FUSE RFA/ MOD FUSE RDO/ AMP FUSE CLSTR FUSE (MOUNTED TO RIGHT STRUT TOWER) (IN DRIVER SEAT WIRING HARNESS, BELOW DRIVER SEAT, 4.5 CM FROM BREAKOUT TO SEAT LUMBAR SWITCH - DRIVER, TOWARD INLINE CONNECTOR X311) (IN HEADLINER WIRING HARNESS, 20 CM FROM RIGHT COURTESY/ READING LAMPS) (IN SUNROOF WIRING HARNESS, 7.5 CM FROM SUNROOF MOTOR) (BEHIND RIGHT SIDE OF DASH) J394 J331 J395 J400 TO AUX PWR FUSE (DIAGRAM 2 OF 3)
1 2 1 2 A 86 10A 10A C 25A KEY IN SWITCH START LOCK ACC RUN ACC RUN START RUN LOCK START VOLTAGE CRANK VOLTAGE IGNITION 1 IGNITION LOCK ACC REFERENCE 12 VOLT IGNITION 3 10A 10A 2A 10A 10A 30 85 87 86 C B D 30 SIGNAL VOLTAGE UNDERHOOD FUSE BLOCK STRTR RELAY I/P FUSE BLOCK STEERING ANGLE SENSOR YAW & LATERAL ACCELEROMETER SENSOR ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE (ECM) BODY CONTROL MODULE BODY CONTROL MODULE (BCM) STRTR RELAY INSIDE AIR TEMPERATURE SENSOR INFLATABLE RESTRAINT PASSENGER AIR BAG ON/OFF INDICATOR TRANSMISSION CONTROL MODULE (TCM) I/P FUSE BLOCK INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE REAR OBJECT SENSOR CONTROL MODULE ELECTRONIC COMPASS MODULE 2-3 SHIFT SOLENOID VALVE TORQUE CONVERTER CLUTCH (TCC) SOLENOID VALVE 1-2 SHIFT SOLENOID VALVE TRANSMISSION CONTROL MODULE (TCM) ENGINE CONTROL MODULE (ECM) HVAC CONTROL MODULE INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM MODULE AUTOMATIC TRANSMISSION LEFT STEERING WHEEL CONTROL SWITCH X1 J3 X1 X1 19 J3 X4 X1 X4 C2 H1 D2 B4 X1 X2 X1 3 B9 X2 A C C 2 1 X1 40 X2 C B B X1 22 21 X1 X2 A 25 A A 3 2 8 K1 X4 K1 J2 1 X1 D11 E12 X1 X2 D2 X1 A2 13 A3 D X5 1 X4 D X2 H2 J1 J2 X1 4 A7 X100 E A6 31 H7 H8 A6 23 X1 13 A10 A A 2 A 11 X1 18 40 PNK PNK PNK BLK/WHT PNK ORG ORG BLK/ WHT ORG BLK BLK BLK BLK BLK WHT/ BLK/WHT BLK/WHT BRN PNK YEL LT GRN BLK WHT/ BLK WHT/ PNK PNK PNK PNK PNK NCA NCA PNK PNK BRN YEL YEL PNK YEL RED PNK BRN BRN BRN BRN YEL RED RED RED BRN BRN BRN PNK (W/ ACTIVE BRAKE CONTROL) (W/ ABS) (W/ ACTIVE BRAKE CONTROL) AUTOMATIC A/C W/ PARK ASSIST (W/ DRIVER INFORMATION CENTER DISPLAY) AUTOMATIC A/C MANUAL A/C IGNITION MAIN PCB RELAY ECM IGN FUSE ABS FUSE AUX PWR FUSE FRONT ACCESSORY POWER OUTLET REAR ACCESSORY POWER OUTLET IGNITION SWITCH KEY IN IGNITION SWITCH PWR/TRN RELAY AIR BAG/ DISPLAY FUSE HVAC FUSE COMPASS FUSE TRANS FUSE CRUISE FUSE (MOUNTED TO RIGHT STRUT TOWER) (BEHIND RIGHT SIDE OF DASH) (IN STEERING COLUMN WIRING HARNESS, NEAR IGNITION SWITCH) (BEHIND LEFT SIDE OF DASH KNEE BOLSTER, AT BASE OF STEERING COLUMN) (LOWER LEFT FRONT OF ENGINE, ON TRANSMISSION STUD, NEAR STARTER) (IN RIGHT DOOR SILL, FORWARD OF RIGHT FRONT SEAT) (LEFT SIDE OF DASH, AT BASE OF STEERING COLUMN) (BEHIND RIGHT SIDE OF DASH) (IN AUTOMATIC TRANSMISSION WIRING HARNESS, INSIDE TRANSMISSION HOUSING, 19 CM FROM INLINE CONNECTOR X113) J101 J213 J406 J200 J214 J115 G113 G302 G200 G202 FROM WSW/RVC FUSE (DIAGRAM 1 OF 3) TO STRTR RELAY (DIAGRAM 2 OF 3) FROM IGNITION MAIN PCB RELAY (DIAGRAM 2 OF 3) TO FAN 2 RELAY (DIAGRAM 3 OF 3) TO ETC/ECM FUSE (DIAGRAM 3 OF 3)
20A 20A B 15A 15A 15A 85 30 25A 87 30A 30A 30 86 86 87 86 D UNDERHOOD FUSE BLOCK ENGINE CONTROL MODULE (ECM) FUEL INJECTOR 4 FUEL INJECTOR 6 FUEL INJECTOR 5 FUEL INJECTOR 2 FUEL INJECTOR 8 FUEL INJECTOR 3 FUEL INJECTOR 7 FUEL INJECTOR 1 IGNITION COIL/ MODULE 8 IGNITION COIL/ MODULE 2 IGNITION COIL/ MODULE 4 IGNITION COIL/ MODULE 1 IGNITION COIL/ MODULE 5 IGNITION COIL/ MODULE 7 IGNITION COIL/ MODULE 3 IGNITION COIL/ MODULE 6 A/C CMPRSR RELAY CYLINDER SHUTOFF SOLENOID 7 CYLINDER SHUTOFF SOLENOID 1 CYLINDER SHUTOFF SOLENOID 4 CYLINDER SHUTOFF SOLENOID 6 HEATED OXYGEN SENSOR (HO2S) 2 MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSOR HEATED OXYGEN SENSOR (HO2S) 1 EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID VALVE VALVE LIFTER OIL MANIFOLD (VLOM) ASSEMBLY FAN 2 RELAY FAN 1 RELAY HORN PCB RELAY HIGH BEAM PCB RELAY FAN 3 RELAY FUEL/PUMP RELAY FOG LAMP PCB RELAY HDM A/C CMPRSR RELAY WIPER PCB RELAY B4 X1 B2 B1 A A A A A A A A D D D D D D D D 13 X2 X1 A5 A B3 A7 E D D A8 B 2 BLK PNK/ BLK PNK/ BLK PNK/ BLK PNK/ BLK BLK PNK/ BLK PNK/ BLK PNK/ PNK PNK/ PNK BLK PNK/ BLK PNK/ PNK/ BLK BLK PNK/ BLK PNK/ PNK PNK PNK PNK PNK PNK PNK PNK BLK PNK/ BLK PNK/ BLK PNK/ BLK PNK/ NCA NCA BLK PNK/ ETC/ECM FUSE INJ 2 FUSE INJ 1 FUSE EMISSIONS 1 FUSE EMISSIONS 2 FUSE WPR FUSE FAN 1 FUSE FAN 3 FUSE (MOUNTED TO RIGHT STRUT TOWER) (IN ENGINE WIRING HARNESS, ON TOP OF ENGINE, 8 CM FROM BREAKOUT TO FUEL INJECTOR 3, TOWARDS FUEL INJECTOR 5) (IN FUEL INJECTOR WIRING HARNESS) (IN PRE-ENGINE WIRING HARNESS 5 CM FROM IGNITION COIL 1 TOWARDS IGNITION COIL 3) J108 J109 J106 J105 FROM PWR/TRN RELAY (DIAGRAM 2 OF 3) FROM PWR/TRN RELAY (DIAGRAM 2 OF 3)