GMC Cab & Chassis Sierra 3500 (2004-2007) org/ Wiring diagrams

40 12 17 MIL CONTROL SIGNAL HIGH - FRONT PTO STATUS 73 36 GROUND GROUND 9 18 15 2 1 GROUND IGNITION CLASS 2 SERIAL DATA CAN DATA LO CAN DATA HI ALLISON TRANSMISSION TCC PWM SOLENOID SOLENOID BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRAKE FUSE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM CAN DATA LO DATA LINK CONNECTOR DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM (IN ENGINE HARNESS) EXCEPT SEO FUSE GRN DK WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) PCM B FUSE HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 0 FUSE INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN LINE PRES 12 VOLT REF TCC SOL MALFUNCTION INDICATOR LAMP MIL SIGNAL OF TRANSMISSION) ON/OFF SOLENOIDS ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE P/N PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PARK/NEUTRAL SIG PNK 1049 2362 2361 WIRE PNK 451 2522 420 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL/WHT WIRE PRESSURE SWITCH MANIFOLD VEHICLE SPEED SENSOR RED WIRE RED/BLK WIRE REV RUN WIRE SEO SIG HI-FRONT COMPUTER DATA LINES SYSTEM 2361 2470 CAN DATA HI CLASS 2 DATA SPLICE PACK STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TFT SENSOR TRIM SOLENOIDS TFT SIGNAL TOW/HAUL SWITCH (IF EQUIPPED) TRANS MIL REQUEST TRANSFER CASE) TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) TURBINE SPEED SENSOR (IN TRANSMISSION) INPUT SPEED SENSOR (IN TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VSS ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE

2061 2062 1732 2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE 511 1947 1946 546 1851 LF AUD SIG+ LF AUD SIG- RR AUD SIG- RR AUD SIG+ GROUND 599 1547 1546 512 LR AUD SIG + LR AUD SIG - RF AUD SIG - RF AUD SIG + ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COAX COMPUTER COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GROUND HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT CLUSTER SYSTEM VSS LR AUD SIG+ LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PROG VOICE RADIO RADIO FUSE REAR SEAT AUDIO CONTROLLER REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RR AUD SIG+ SEEK UP SEEK DN SERIAL DATA SOURCE DN SOURCE UP SYSTEM DATA LINES TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) UPPER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY UPPER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND RIGHT SIDE OF DASH) VOL UP VOL DN WHT WIRE

AUDIO AMPLIFIER BARE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CD PLAYER REMOTE PLAYBACK DEVICE COMPUTER DATA LINES SYSTEM DIMMING DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND R SPK OUT+ GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) INFO FUSE L SPK OUT- L SPK OUT+ LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR SPEAKER (EXTENDED CAB) LEFT REAR DOOR SPEAKER (EXCEPT EXTENDED CAB) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MIC SUP VOLT MIC SIG RF AUD SIG- LF AUD SIG- LF AUD SIG+ RF AUD SIG+ DRAIN WIRE NCA WIRE NOISE COMPENSATION MICROPHONE ORG/ WIRE ORG/BLK WIRE R SPK OUT- B+ RADIO AMP FUSE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR SPEAKER (EXTENDED CAB) RIGHT REAR DOOR SPEAKER (EXCEPT EXTENDED CAB) RT AUD + LF AUD + AUD OUT - GROUND SERIAL DATA B+ SERIAL DATA SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) YEL WIRE

3 4 5 6 7 8 9 10 11 12 13 14 15 16 RT AUD + BARE BARE 5 6 BARE BARE BLK/WHT WIRE BLUNT CUT) BRN/WHT WIRE CD PLAYER REMOTE PLAYBACK DEVICE COAX ANTENNA COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER DIMMING RT AUD + LF AUD + AUD OUT - GROUND SERIAL DATA B+ DK GRN/WHT WIRE GROUND AUD OUT - DRAIN WIRE HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFO FUSE LF AUD + LT GRN WIRE ORG/ WIRE SERIAL DATA SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT)

2061 2062 1732 2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE 511 1947 1946 546 1851 LF AUD SIG+ LF AUD SIG- RR AUD SIG- RR AUD SIG+ GROUND 599 1547 1546 512 LR AUD SIG + LR AUD SIG - RF AUD SIG - RF AUD SIG + ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GROUND HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT CLUSTER SYSTEM LR AUD SIG+ LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PROG VOICE RADIO RADIO FUSE REAR SEAT AUDIO CONTROLLER REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RR AUD SIG+ SEEK UP SEEK DN SERIAL DATA SOURCE DN SOURCE UP TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) UPPER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY UPPER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND RIGHT SIDE OF DASH) VOL UP VOL DN VSS WHT WIRE

10 11 12 13 14 15 16 AUD OUT - DRAIN WIRE AUDIO AMPLIFIER BARE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COAX ANTENNA COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GROUND R SPK OUT+ GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) L SPK OUT- L SPK OUT+ LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR SPEAKER (EXTENDED CAB) LEFT REAR DOOR SPEAKER (EXCEPT EXTENDED CAB) LF AUD + RT AUD + LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MIC SUP VOLT MIC SIG RF AUD SIG- LF AUD SIG- LF AUD SIG+ RF AUD SIG+ DRAIN WIRE NCA WIRE NOISE COMPENSATION MICROPHONE ORG/ WIRE ORG/BLK WIRE R SPK OUT- B+ RADIO AMP FUSE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR SPEAKER (EXTENDED CAB) RIGHT REAR DOOR SPEAKER (EXCEPT EXTENDED CAB) SERIAL DATA SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) YEL WIRE

A/T SHIFT LOCK CONTROL SOLENOID (ON STEERING COLUMN) ALLISON TRANS B/U LP FUSE BLK WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) COMPUTER DATA LINES SYSTEM CTRL VOLTAGE CLASS 2 DIESEL DK GRN WIRE ENGINE CONTROL MODULE (LEFT FRONT OF ENG COMPT) EXCEPT ALLISON TRANS FUSE GASOLINE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PARK/ NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANS.) PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENG COMPT) STOPLAMP SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BTSI FUSE WHT WIRE

1362 (OR 353) 349 1834 2306 (OR 371) AIRBAG FUSE BLK WIRE BLK/WHT WIRE BRN WIRE CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE EXCEPT 10 SERIES/ CREW CAB GROUND GRY WIRE HOT IN RUN OR START HVY I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) I/P RELAY BLOCK IGNITION 1 VOLTAGE INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER LEFT FRONT SEAT) INFLATABLE RESTRAINT STEERING WHEEL MODULE INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL KEY SWITCH LEFT INFLATABLE RESTRAINT FRONT END SENSOR (ON LEFT FRONT OF VEHICLE) LOGIC LT BLU WIRE LT GRN WIRE NCA WIRE OFF ORG/ WIRE OTHERS PNK WIRE PNK (OR TAN/BLK) WIRE PNK 1 2 3 4 5 6 7 WIRE PNK W/ FRONT PASSENGER/ CHILD PRESENCE DETECTOR WIRE PNK WIRE PPL PPL PPL RED (OR PNK) WIRE RED WIRE RIGHT FRONT OF VEHICLE BOTTOM OF RADIATOR SUPPORT) RIGHT INFLATABLE RESTRAINT SIDE IMPACT SENSOR RIGHT SIGNAL HIGH CONTROL LOW CONTROL GROUND LOW CONTROL HIGH CONTROL RIGHT VOLTAGE HIGH CONTROL LOW CONTROL LOW REFERENCE LOW CONTROL HIGH CONTROL SHORTING BAR SHORTING BAR SHORTING BAR SIGNAL SIGNAL LOW REFERENCE LOW REFERENCE STAGE 1 INFLATABLE RESTRAINT I/P MODULE (BEHIND RIGHT SIDE OF DASH) STAGE 2 TAN WIRE TAN/BLK WIRE TWISTED PAIR WIRES UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) W/ FRONT PASSENGER/ CHILD PRESENCE DETECTOR WHT WIRE YEL WIRE

2-HI IND 4 HI 4 LO 4-HI IND 4-LO IND AXLE SW SIG BLK WIRE BLK/WHT WIRE BRAKE CONTROL BRN WIRE BRN/WHT WIRE CLASS II DATA AXLE CTRL AWD IND 4-LO IND 4-HI IND CONTROL MODULE CTRL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK GRN WIRE DK GRN/WHT WIRE ENCODER ENCODER LOW GROUND ENCODER SIG EXCEPT SEO FRONT AXLE ACTUATOR FRONT PROPSHAFT SPEED SENSOR FUSE GROUND BATTERY MOTOR CTRL A MOTOR CTRL B GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) SEO IGN FUSE I/P RELAY BLOCK (UNDER LEFT SIDE OF DASH) IGN E FUSE ILLUMINATION INSTRUMENT PANEL CLUSTER LAMP LOCK SOL CTRL 2-HI IND NEUTRAL IND LOGIC LT BLU WIRE LT GRN/BLK WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL FT SHAFT LO FT SHAFT HI PPL/WHT WIRE REAR PROPSHAFT SPEED SENSOR RED WIRE RR SHAFT HI RR SHAFT LO RUN WIRE SEO SHIFT MOTOR SPLICE PACK TAN WIRE TAN/BLK WIRE TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLAMP SWITCH) TRANSFER CASE SHIFT CONTROL SWITCH TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE

2-HI IND 4 HI 4 LO 4-HI IND 4-LO IND AXLE SW SIG BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLASS II DATA AXLE CTRL AWD IND 4-LO IND 4-HI IND CONTROL MODULE DIESEL: ENGINE CONTROL MODULE CTRL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIESEL (ECM) DK GRN WIRE DK GRN/WHT WIRE ENCODER ENCODER LOW GROUND ENCODER SIG EXCEPT SEO FRONT AXLE ACTUATOR FT SHAFT LO FT SHAFT HI FUSE GAS (PCM) GROUND BATTERY MOTOR CTRL A MOTOR CTRL B GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) SEO IGN FUSE I/P RELAY BLOCK (UNDER LEFT SIDE OF DASH) IGN E FUSE ILLUMINATION INSTRUMENT PANEL CLUSTER LAMP LOCK SOL CTRL 2-HI IND NEUTRAL IND LOGIC LT BLU WIRE LT GRN/BLK WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RR SHAFT HI RR SHAFT LO RUN WIRE SEO SHIFT MOTOR SPLICE PACK TAN/BLK WIRE TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLAMP SWITCH) TRANSFER CASE SHIFT CONTROL SWITCH TRANSMISSION SYSTEM TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT)