Buick LaCrosse I (2004-2009) (left side of dash, at base of steering column) Wiring diagrams

10 VOLT REF A/T SHIFT LOCK CONTROL SOLENOID (IN CENTER CONSOLE) A/T SHIFT LOCK CONTROL SOLENOID (IN CENTER CONSOLE) (IN CENTER CONSOLE) AUTOMATIC TRANSMISSION BATTERY POSITIVE VOLTAGE BLK WIRE BLK/WHT WIRE CLASS 2 SERIAL DATA COLUMN SHIFT COLUMN SHIFT CONSOLE SHIFT COMPUTER DATA LINES SYSTEM CONSOLE SHIFT DK GRN WIRE DK GRN/WHT WIRE GRY WIRE GRY/WHT WIRE HAZRD FUSE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) LOW REF LT GRN WIRE NCA WIRE ORG/ WIRE RED/BLK WIRE STOP LAMP SW SIG SUPPLY VOLTAGE SWITCH SIG A SWITCH SIG B SWITCH SIG C SWITCH SIG P TRANSMISSION INTERNAL MODE SWITCH (IMS) P/N WHT WIRE YEL WIRE YEL/BLK WIRE

3.6L 3.8L BATT + BATTERY BATTERY CURRENT SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CLSTR FUSE COMPUTER DATA LINES SYSTEM CURRENT SENSOR LOW REF CURRENT SENSOR SIG DK GRN WIRE ECM CLASS 2 SERIAL DATA ENGINE CONTROL MODULE (ECM) (TOP OF ENGINE) FUSIBLE LINK (8 GA- GENERATOR GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GROUND GRY WIRE HOT AT ALL TIMES I/P CLASS 2 SERIAL DATA I/P DIMMING VOLTAGE REF I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LOGIC ORG/ WIRE PCM CLASS 2 SERIAL DATA PCM/ECM CLASS 2 SERIAL DATA POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) RED (OR ORG) WIRE RED WIRE RED/WHT WIRE SPLICE PACK STARTER WHT WIRE

BLK/WHT WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGNITION LOCK CYLINDER CONTROL ACTUATOR (IN UPPER STEERING COLUMN) NCA WIRE PARK SWITCH PARK/SWITCH FUSE PPL/WHT WIRE WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 BATTERY GROUND F CENTER OUT (+) F CENTER OUT (-) 1 2 8 L AUDIO SIG AUDIO COMMON SIG DRAIN WIRE 1-6 AMPLIFIER CTRL ANTENNA GRID (CENTER REAR OF ROOF) ANTENNA MODULE AUDIO AMPLIFIER (CENTER OF REAR COMPT) BAND BARE BLK WIRE BLK/WHT WIRE BLU WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CENTER OF REAR WINDOW PANEL, APPROXIMATELY 90 CM FROM BREAKOUT TO REAR COMPT CENTER SPEAKER CLASS 2 SERIAL DATA COAX 1 ANTENNA SIG RADIO ON SIG ANTENNA SIG PPL COAX COAX ANTENNA SIG COMPUTER DATA LINES SYSTEM COURTESY LAMP DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK LT LT DK GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LT BLU WIRE LT DK LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL PPL ON SIG I/P LMP VLT GROUND 8 1450 INTERIOR LIGHTS SYSTEM PPL PPL R AUDIO SIG (+) L AUDIO SIG (+) AUDIO COMMON AUDIO COMMON SIG L AUDIO SIG RADIO RDO AMP FUSE REAR SUB OUT (-) REAR SUB OUT (+) REAR WINDOW RF SPKR OUT (+) RF SPKR OUT (-) LF SPKR OUT (-) LF SPKR OUT (+) RIGHT RIGHT FRONT FRONT DOOR TWEETER SPEAKER SPEAKER RIGHT STEERING WHEEL CONTROLS SATELLITE RADIO CIRCUIT SEEK DOWN SEEK UP SIDE OF DASH) SUB- MID SUB- MID WOOFER RANGE WOOFER RANGE RIGHT REAR LEFT REAR SPEAKER SPEAKER TAN WIRE VOL DOWN VOL UP WHT WIRE YEL WIRE

1 2 8 L AUDIO SIG AUDIO COMMON SIG DRAIN WIRE BAND BARE BLK/WHT WIRE BLU WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL DATA COAX ANTENNA SIG COAX PPL COAX ANTENNA SIG RADIO ON SIG ANTENNA SIG COMPUTER DATA LINES SYSTEM DK 1-6 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DK LT GRID (CENTER REAR OF ROOF) GRN WIRE GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL PPL ON SIG PPL PPL R AUDIO SIG (+) L AUDIO SIG (+) AUDIO COMMON AUDIO COMMON SIG L AUDIO SIG RADIO RADIO AMP FUSE REAR WINDOW ANTENNA RIGHT FRONT RIGHT FRONT LEFT REAR TWEETER DOOR SPEAKER SPEAKER SPEAKER RIGHT REAR SPEAKER RIGHT STEERING WHEEL CONTROLS SATELLITE RADIO CIRCUIT SEEK DOWN SEEK UP TAN WIRE VOL DOWN VOL UP YEL WIRE

ANTENNA SIG BARE BLK/WHT WIRE BLUNT CUT) BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA (CENTER REAR OF ROOF) DIGITAL RADIO RECEIVER (LEFT SIDE OF TRUNK) DK BLU WIRE DK GRN/WHT WIRE GROUND AUD COMMON DRAIN WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) L AUD SIG + R AUD SIG + L AUDIO SIG (+) R AUDIO SIG (+) AUDIO COMMON NCA WIRE ORG/ WIRE RADIO RFA/MOD FUSE SERIAL DATA SERIAL DATA BATTERY

BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CHMSL/ BKUP FUSE DOOR LOCK AJAR INDICATOR SWITCH DR/LCK TRUNK FUSE DRIVER DOOR LOCK (IN REAR AJAR EXT LMPS OFF INPUT GRY WIRE GRY/BLK WIRE HAZRD FUSE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGNITION SWITCH INT/ ILLUM FUSE KEY IN IGNITION LAMP SWITCH ASSEMBLY LEFT REAR DOOR LOCK AJAR LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OFF HEAD ORG/ WIRE ORG/BLK WIRE PARK AUTO PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) SIDE OF DRIVER'S DOOR) SWITCH UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WASHER/ RVC FUSE 6