Buick·Lucerne·2008 Buick Lucerne·Wiring
Wiring diagram

2008 Buick Lucerne — power distribution

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Power distribution

A J 10A 10A 10A 10A 60A 60A 50A 25A B B 10A 30A 30A 15A 50A 40A GENERATOR BATTERY STARTER MOTOR UNDERHOOD FUSE BLOCK TRN/SIG PCB RELAY TRN/SIG PCB RELAY HIGH/BEAM PCB RELAY FAN 2 RELAY 31 FAN 1 RELAY 33 STRTR RELAY 30 AIR/SOL RELAY 35 PWR/TRAIN RELAY 29 AIR PUMP RELAY 37 LO/BEAM PCB RELAY A/C CLUTCH RELAY 34 HORN PCB RELAY UNDERHOOD FUSE BLOCK WSH PCB RELAY FOG LAMP PCB RELAY WPR HI PCB RELAY WPR PCB RELAY INFLATABLE RESTRAINT I/P MODULE INDICATOR INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE (SDM) ENGINE CONTROL MODULE (ECM) POWERTRAIN CONTROL MODULE (PCM) WINDSHIELD WASHER SOLVENT HEATER ELECTRONIC BRAKE CONTROL MODULE (EBCM) AUTOMATIC TRANSMISSION TRANSMISSION CONTROL MODULE (TCM) AUTOMATIC TRANSMISSION HVAC CONTROL MODULE RECIRCULATION ACTUATOR INSTRUMENT PANEL CLUSTER (IPC) X101 X101 A3 X2 7 20 X1 18 32 X2 B2 4 B3 A5 X1 19 B2 U E 31 E D2 2 31 X1 1 X2 E3 E1 X3 F1 PNK/RED RED/ GRY RED BLK RED/ PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK WHT BLK/ WHT BLK/ PNK PNK PNK PNK PNK PNK PNK BLK GRY RED/ RED RED/ RED RED RED/BLK BLK RED/BLK RED RED/ G112 FUSIBLE LINK A/C CLTCH FUSE 4 FAN 1 FUSE 27 STRTR FUSE 24 AIR PUMP FUSE 22 AIR/ SOL FUSE 5 FAN 2 FUSE 26 WPR FUSE 13 ABS FUSE 23 WSW HTR FUSE 28 ABS MTR FUSE 25 IGN RELAY 36 ECM/ PCM FUSE 9 AIR BAG FUSE 11 HVAC/IPC IGN 1 FUSE 10 TRANS IGN 1 FUSE 8 (ON RIGHT FRONT OF ENGINE COMPT, FORWARD OF STRUT TOWER) (ON RIGHT FRONT OF ENGINE COMPT, FORWARD OF STRUT TOWER) (IN ENGINE HARNESS, APPROXIMATELY 41 CM (16 IN) FROM UNDERHOOD FUSE BLOCK CONNECTOR C3) (LOWER LEFT REAR OF ENGINE) (IN IP HARNESS, BETWEEN X201 & X202) 4.6L 3.8L MANUAL A/C AUTOMATIC A/C W/ HEATED NOZZLE (4.6L) (3.8L) J105 (4.6L) J111 J229 TO REAR FUSE BLOCK (DIAGRAM 2 OF 5) TO WPR FUSE (DIAGRAM 1 OF 5) FROM BODY CONTROL MODULE (DIAGRAM 5 OF 5) FROM TRN/SIG PCB RELAY (DIAGRAM 1 OF 5)
10A 10A C 30A 15A 10A A 10A 10A D 15A 15A 30A C 10A 15A REAR FUSE BLOCK DATA LINK CONNECTOR (DLC) DIGITAL RADIO RECEIVER RADIO VEHICLE COMMUNICATION INTERFACE MODULE AUDIO AMPLIFIER INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE (SDM) THEFT DETERRENT MODULE (TDM) INSTRUMENT PANEL CLUSTER (IPC) INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM (PPS) MODULE HVAC CONTROL MODULE REAR FUSE BLOCK POWERTRAIN CONTROL MODULE (PCM) FRONT PASSENGER DOOR MODULE (FPDM) TRANSMISSION CONTROL MODULE (TCM) SEAT CLIMATE CONTROL MODULE ENGINE CONTROL MODULE (ECM) DRIVER DOOR MODULE (DDM) REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) VEHICLE DIRECTION ALERT ALARM WARNING MODULE GARAGE DOOR OPENER TRANSMITTER 1 X3 16 1 X1 X1 8 10 X1 9 16 1 31 1 15 X1 X1 4 X1 4 X1 E X1 20 X1 32 20 1 1 X1 A1 X2 B1 X3 X3 C2 X2 F5 A2 E11 D4 X2 A12 B12 X1 D4 X1 WHT RED/ RED TAN/ PPL PNK/ GRY YEL/ BRN PNK/ RED PNK/ RED PNK/ DK GRN RED/ RED/ DK GRN DK GRN RED/ DK GRN RED/ WHT RED/ RED/WHT DK GRN/ TAN TAN DK GRN/ WHT RED/ RED DK BLU TAN/ TAN/ DK BLU PNK ORG/ PNK ORG/ ORG/ PNK ORG/ PNK ORG/ PNK BRN PNK/ RED PNK/ RED PNK/ PPL PNK/ TAN/ RED YEL/ GRY WHT WHT RED/ RED/ RED/ WHT RED/ DK GRN DK GRN DK GRN RED/ RED/ RED/ DK GRN ORG SOL CAN FUSE 34 BCM FUSE 40 SDM FUSE 30 PASSKEY FUSE 13 AMP-RDO FUSE 38 MDL-ONSTAR FUSE 42 RADIO FUSE 44 DDM FUSE 22 PDM FUSE 29 ECM/TCM FUSE 5 MDLS-BODY FUSE 43 MDL-FRT FUSE 9 (BELOW LEFT SIDE OF REAR SEAT) (IN I/P HARNESS, APPROXIMATELY 6 CM (2 IN) FROM BRANCH FOR HVAC MODULE) (IN BODY HARNESS, APPROXIMATELY 10 CM (4 IN) FROM AUDIO AMPLIFIER CONNECTOR C1) (BELOW LEFT SIDE OF REAR SEAT) (IN BODY HARNESS, APPROXIMATELY 14 CM (6 IN) FROM BREAKOUT FOR YAW & LATERAL ACCELERATION SENSOR) (IN ENGINE HARNESS, APPROXIMATELY 80 CM (31 IN) FROM UNDERHOOD FUSE BLOCK CONNECTOR C3) (INFO NOT AVAILABLE) IF EQUIPPED IF EQUIPPED W/ ONSTAR 4.6L W/ LANE DEPARTURE WARNING SENSOR INDICATOR W/O LANE DEPARTURE WARNING SENSOR INDICATOR 3.8L J200 J366 J301 J100 J392 FROM BATTERY (DIAGRAM 1 OF 5) TO MDLS-BODY FUSE 43 (DIAGRAM 2 OF 5) FROM AMP-RDO FUSE 38 (DIAGRAM 2 OF 5) TO IGN SWTCH FUSE 21 (DIAGRAM 3 OF 5)
40A 25A E 10A 25A 10A 25A F 15A 15A 10A 10A 10A 25A 5A D H 20A 20A E 10A 40A REAR FUSE BLOCK TRUNK RELSE RELAY 67 LEVEL COMP RELAY 53 AUTOMATIC LEVEL CONTROL MODULE MEMORY SEAT MODULE AUTOMATIC LEVEL CONTROL (ALC) COMPRESSOR ELECTRONIC SUSPENSION CONTROL (ESC) MODULE PASSENGER LUMBAR ADJUSTER SWITCH PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT ADJUSTER SWITCH DRIVER SEAT ADJUSTER SWITCH REAR FUSE BLOCK REAR OBJECT SENSOR CONTROL MODULE BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE (BCM) RIGHT SIDE OBJECT SENSOR LEFT SIDE OBJECT SENSOR X3 X3 X1 C10 D8 X2 2 E8 X1 D5 X3 X2 1 C E 6 5 1 3 4 2 X2 2 X3 X4 D D E G A A A 1 X1 C C C C A 6 2 2 F4 X2 E12 A11 A4 B1 X2 E12 X3 D9 X2 D9 C4 E12 X4 B E1 X2 X2 F9 RED/ WHT WHT RED/ RED/ WHT YEL TAN/ ORG PNK/ TAN/ RED/ WHT PPL TAN/ PPL RED/ WHT ORG/ BRN PNK RED/ RED/ RED/ RED/ YEL GRN WHT DK GRN/ PNK/ DK BLU PPL RED/ PNK TAN/ DK BLU PNK/ YEL DK BLU TAN/ PNK RED/ TAN/ DK BLU DK BLU TAN/ DK BLU TAN/ WHT RED/ WHT RED/ DK GRN PNK/ WHT RED/ WHT RED/ BLK BLK BLK BLK BLK BLK RED/ WHT RED/ WHT RED/ WHT G304 G300 COMP RELAY FUSE 24 MDL-MEM FUSE 6 RF SEAT CIRCUIT BREAKER 54 MDL-RTD FUSE 15 PWR T/T CIRCUIT BREAKER 57 LEVEL COMP FUSE 47 PWR SEAT CIRCUIT BREAKER 55 IGN SWITCH FUSE 21 MTR FUSE 48 BCM (LTTN) FUSE 25 BCM (DIM) FUSE 18 BCM (CHMSL) FUSE 39 MDL-RPA FUSE 12 BCM (INADV) FUSE 32 BCM (RTTN) FUSE 36 LTR-CIG FUSE 26 APOS FUSE 31 BLOWER FUSE 49 FRONT AUXILIARY POWER OUTLET CIGAR LIGHTER CIGAR LIGHTER CENTER CONSOLE ACCESSORY POWER OUTLET (BELOW LEFT SIDE OF REAR SEAT) (IN BODY HARNESS, APPROXIMATELY 27 CM (11 IN) FROM BRANCH FOR REAR FUSE BLOCK) (IN RIGHT FRONT SEAT HARNESS, APPROXIMATELY 114 CM (45 IN) FROM PASSENGER SEAT ADJUSTER SWITCH CONNECTOR) (BELOW LEFT SIDE OF REAR SEAT) (IN CENTER CONSOLE HARNESS, APPROXIMATELY 10 CM (4 IN) FROM BREAKOUT FOR A/T SHIFT LOCK CONTROL SOLENOID) (IN REAR FASCIA HARNESS, APPROXIMATELY 8 CM (3 IN) FROM BREAKOUT TO RIGHT REAR CORNER OBJECT ALARM SENSOR) (UNDER RIGHT FRONT PASSENGER'S SEAT) (UNDER DRIVER'S SEAT) W/ MULTI- DIRECTIONAL W/O MULTI- DIRECTIONAL W/ MEMORY SEAT W/O MEMORY SEAT W/ MAGNETO RHEOLOGICAL W/ POWER TILT TELESCOPING STEERING COLUMN (IF EQUIPPED) W/ AIR SUSPENSION (AUTOMATIC A/C) (MANUAL A/C) W/ REAR PARKING ASSIST W/ CUSTOM SEAT W/ INDIVIDUAL SEAT W/ OBSTACLE DETECTION SENSOR INDICATOR (W/ CUSTOM SEAT) W/ INDIVIDUAL SEAT J388 J348 J315 J405 J221 J307 FROM PDM FUSE 29 (DIAGRAM 2 OF 5) TO MDL-RPA FUSE 12 (DIAGRAM 3 OF 5) TO IGNITION SWITCH (DIAGRAM 5 OF 5) FROM MDL-RTD FUSE 15 (DIAGRAM 3 OF 5) TO RAP-HC RELAY 70 (DIAGRAM 4 OF 5)
7.5A G 10A 25A 10A F 10A 10A 25A 10A 40A 20A G 40A REAR FUSE BLOCK SUNROOF CONTROL MODULE INSIDE REARVIEW MIRROR WINDSHIELD OUTSIDE MOISTURE SENSOR BODY CONTROL MODULE (BCM) WINDSHIELD WASHER SOLVENT HEATER FRONT PASSENGER DOOR MODULE (FPDM) PARK SWITCH AUTOMATIC TRANSMISSION SHIFT LEVER LEFT REAR DOOR WINDOW SWITCH RIGHT REAR DOOR WINDOW SWITCH DRIVER DOOR MODULE (DDM) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL HEATED STEERING WHEEL CONTROL MODULE AUTOMATIC TRANSMISSION SHIFT LEVER SEAT CLIMATE CONTROL MODULE REAR FUSE BLOCK UNLOCK RELAY 62 UNLOCK RELAY 63 DRL RELAY 65 FUEL/ PUMP RELAY 59 LEVEL COMP RELAY 53 REAR DEFOG RELAY 52 PARK LP-LT RELAY 58 C X277 A X276 C 2 X1 2 X1 G G 2 X4 X3 3 4 11 X5 13 6 X2 A A X1 1 13 3 X2 A X2 1 E2 X2 X2 F3 X1 A3 A11 E11 B7 F6 X2 A8 X1 B11 E6 X3 X2 C3 YEL NCA NCA BRN BRN BRN TAN YEL RED/ RED/ WHT WHT RED/ RED/ WHT WHT RED/ WHT TAN/ BRN LT GRN/ BLK/ BRN BLK TAN PNK BRN YEL GRY PNK/ BRN BRN YEL/ TAN/ BRN GRY YEL YEL/ BRN YEL/ BRN BRN BRN BRN BRN BRN BRN RED/ BLK G301 BCM FUSE 19 BCM (CTSY) FUSE 35 PWR WDO CIRCUIT BREAKER 56 RUN RELAY 64 RAP-HC RELAY 70 RUN 1 FUSE 20 RUN 2 FUSE 10 RAP1 FUSE 28 S/ROOF FUSE 17 RAP2 FUSE 33 LEVEL COMP FUSE 47 REAR DEFOG FUSE 46 UNLOCK/LOCK FUSE 14 (BELOW LEFT SIDE OF REAR SEAT) (IN BODY HARNESS, APPROXIMATELY 15 CM (6 IN) FROM BRANCH FOR BATTERY CURRENT SENSOR) (IN CENTER CONSOLE HARNESS, APPROXIMATELY 8 CM (3 IN) FROM BREAKOUT FOR A/T SHIFT LOCK CONTROL SOLENOID) (UNDER LEFT REAR SEAT) (IN BODY HARNESS, APPROXIMATELY 19 CM (8 IN) FROM BREAKOUT FOR G301) (BELOW LEFT SIDE OF REAR SEAT) W/ CUSTOM SEAT W/ HEATED STEERING WHEEL LEATHER WRAPPED W/ HEATED NOZZLE (IF EQUIPPED) (IF EQUIPPED) W/ INDIVIDUAL SEAT W/ CUSTOM SEAT W/O FRONT HEATED SEAT COOLING W/ FRONT HEATED SEAT COOLING J337 J381 J302 FROM BCM (CHMSL) FUSE 39 (DIAGRAM 3 OF 5) TO REAR DEFOG FUSE 46 (DIAGRAM 4 OF 5) FROM PWR WDO CIRCUIT BREAKER 56 (DIAGRAM 4 OF 5)
H ACC OFF OFF START RUN RUN START RUN ACC OFF ACC ACC OFF RUN START RUN ACC START OFF START J 2A BODY CONTROL MODULE (BCM) REAR FUSE BLOCK INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT STEERING WHEEL CONTROL SWITCH ENGINE CONTROL MODULE (ECM) TRANSMISSION CONTROL MODULE (TCM) RIGHT STEERING WHEEL CONTROL SWITCH POWERTRAIN CONTROL MODULE (PCM) THEFT DETERRENT MODULE (TDM) 2 3 1 5 6 19 X4 2 21 X1 21 X6 21 4 2 14 18 X1 11 X1 F X276 X1 18 2 X277 F 6 E7 X1 F7 X1 BLK WHT/ WHT WHT DK BLU/ BRN WHT DK BLU/ WHT PPL/ PPL/ WHT DK BLU BRN PNK/ YEL BRN PNK WHT WHT/ BLK BRN DK BLU/ PNK PNK YEL GRY/ BLK WHT DK BLU/ WHT DK BLU/ WHT IGNITION SWITCH KEY-IN SWITCH STG ILLUM FUSE 8 (IN STEERING COLUMN HARNESS, BETWEEN X203 & IGNITION SWITCH CONNECTOR) (BELOW LEFT SIDE OF REAR SEAT) (IN ENGINE HARNESS, APPROXIMATELY 13 CM (5 IN) FROM BREAKOUT FOR X138) 3.8L 4.6L J201 J104 FROM IGN SW FUSE (DIAGRAM 3 OF 5) TO IGN RELAY 36 (DIAGRAM 1 OF 5)