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

1 2 8 VOICE SIGNAL VOICE LOW REF DRAIN WIRE 10 11 12 13 14 15 16 AUD OUT - ANTENNA BARE BARE (BLUNT CUT) BARE DRAIN WIRE BLK/WHT WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE COAX COAX ANTENNA COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER (IF EQUIPPED) (BEHIND RIGHT SIDE OF INSTRUMENT PANEL) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER (EXCEPT STANDARD CAB) LEFT REAR SPEAKER (STANDARD CAB) LF AUD + RT AUD + LF SPK OUT+ LF SPK OUT- RR SPK OUT+ RR SPK OUT- GROUND LR SPK OUT + LR SPK OUT - RF SPK OUT + RF SPK OUT - LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE RADIO RADIO FUSE RIGHT AUD SIG LEFT AUD SIG COMMON AUD SIG VOICE LOW REF CELL VOICE SIG RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER (EXCEPT STANDARD CAB) RIGHT REAR SPEAKER (STANDARD CAB) SERIAL DATA TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND PASSENGER AIR BAG MODULE) YEL WIRE

BACK BLK WIRE CREW DK BLU WIRE DK GRN WIRE DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR EXCEPT CREW CAB CAB FRONT DN FRONT UP HOT AT ALL TIMES I/P RELAY BLOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE REAR DN REAR UP RED WIRE SEATS CIRCUIT BREAKER TAN WIRE YEL WIRE

1 14 26 SUPPLY VOLTAGE SUPPLY VOLTAGE LOW REF BACK ONLY IND BACK ONLY INDICATOR BACK ONLY SELECT BACK, CUSHION SELECT BATT + BCK, CSH SELECT BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DDM FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK LT DRIVER BACK HEATED SEAT ELEMENT DRIVER CUSHION HEATED SEAT ELEMENT DRIVER DOOR MODULE FRONT PASSENGER BACK HEATED SEAT ELEMENT FRONT PASSENGER CUSHION HEATED SEAT ELEMENT FRONT PASSENGER DOOR MODULE GRN WIRE GROUND GRY WIRE HI HEAT IND HI HEAT INDICATOR HOT AT ALL TIMES I/P FUSE BLOCK I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK LOW HEAT IND LOW HEAT INDICATOR LT BLU WIRE LT DOORS CIRCUIT BREAKER LT GRN WIRE MED HEAT IND MED HEAT INDICATOR MEMORY SEAT MODULE (UNDERSIDE OF LEFT FRONT SEAT) MEMORY/HEATED SEAT SWITCH ORG/ WIRE PNK WIRE PPL RED WIRE RED/WHT WIRE RT DOORS CIRCUIT BREAKER SEATS CIRCUIT BREAKER SERIAL DATA SWITCH POWER TAN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

5 6 7 8 9 10 11 12 13 14 15 PPL AUDIO AMPLIFIER BARE BARE DRAIN WIRE R SPK OUT- L SPK OUT- B+ BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND L SPK OUT+ R SPK OUT+ GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P RELAY BLOCK (BELOW LOWER LEFT SIDE OF DASH) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR SPEAKER (CREW CAB) LEFT REAR DOOR SPEAKER (EXCEPT CREW CAB) LEFT SUBWOOFER LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK BARE WIRE PNK WIRE RADIO AMP FUSE RADIO FUSE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) RIGHT REAR SPEAKER (CREW CAB) RIGHT REAR DOOR SPEAKER (EXCEPT CREW CAB) RIGHT SUBWOOFER SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) YEL WIRE

4 5 BARE AUDIO AMPLIFIER BARE BARE 6 7 8 9 10 11 12 13 14 15 16 17 BARE DRAIN WIRE R SPK OUT- L SPK OUT- B+ BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND L SPK OUT+ R SPK OUT+ GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P RELAY BLOCK (BELOW LOWER LEFT SIDE OF DASH) LEFT FRONT LEFT FRONT TWEETER DOOR SPEAKER SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR DOOR SPEAKER (CREW CAB) LEFT REAR SPEAKER (EXCEPT CREW CAB) LEFT SUBWOOFER LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK BARE WIRE PNK WIRE PPL RADIO FUSE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) RIGHT REAR DOOR SPEAKER (CREW CAB) RIGHT REAR SPEAKER (EXCEPT CREW CAB) RIGHT SUBWOOFER SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) YEL WIRE

BACK BLK WIRE DK BLU WIRE DK GRN WIRE FR DN FR UP FWD FRONT PASSENGER SEAT ADJUSTER SWITCH FRONT PASSENGER SEAT FRONT VERTICAL MOTOR FRONT PASSENGER SEAT HORIZONTAL MOTOR FRONT PASSENGER SEAT REAR RECLINER MOTOR FRONT PASSENGER SEAT REAR VERTICAL MOTOR HOT AT ALL TIMES I/P RELAY BLOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE RED WIRE RR DN RR UP SEATS CIRCUIT BREAKER TAN WIRE YEL WIRE

2 3 1340 1050 BATTERY GROUND 22 14 1046 4140 CLASS 2 SERIAL DATA BATTERY 22 14 1047 4240 CLASS 2 SERIAL DATA BATTERY 4 2 1050 1240 GROUND BATTERY 8 7 4 3 PNK LOW REF MIR SIGNAL MIR SENS LOW REF MIR HTR LOW REF WIRE BLK WIRE BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DDM FUSE DK BLU WIRE DK GRN WIRE DOWN DRIVER DOOR MODULE (IN DRIVER'S DOOR) DRIVER MIRROR ELECTRO- CHROMIC FOLDING/ TELESCOPING MOTOR HEATING ELEMENT FRONT PASSENGER DOOR MODULE (IN RIGHT FRONT DOOR) FUSE BLOCK- I/P (LOWER LEFT SIDE OF DASH) GRY WIRE HEATING ELEMENT HORIZONTAL OUTSIDE REARVIEW MIRROR (FRONT PASSENGER) HOT AT ALL TIMES HVAC CONTROL MODULE (IN CENTER OF DASH) I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) JUNCTION BLOCK - I/P (RIGHT SIDE OF DASH) LEFT LEFT UP HORIZONTAL LEFT UP VERTICAL LT BLU WIRE LT DOORS CIRCUIT BREAKER LT GRN WIRE ORG/ WIRE OUT OUT FOLDING/ TELESCOPING MOTOR OUTSIDE REARVIEW MIRROR- DRIVER PASS- ENGER MIRROR PDM FUSE PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE RIGHT RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RT DOOR CIRCUIT BREAKER SWITCH POWER TAN WIRE VERTICAL WHT WIRE YEL WIRE

B+ PWR WND LOCKOUT LR SIGNAL B+ PWR WND LOCKOUT RR SIGNAL B+ VOLT BCM CLASS 2 SERIAL DATA BLK WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL DATA CREW CAB DK BLU WIRE DK GRN WIRE DRIVER DOOR MODULE DRIVER WINDOW DRIVER WINDOW MOTOR FRONT PASSENGER DOOR MODULE FRONT PASSENGER WINDOW MOTOR GROUND GRY/BLK 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) I/P RELAY BLOCK ILLUMINATION LEFT REAR WINDOW MOTOR LEFT REAR WINDOW SWITCH (CREW CAB ONLY) LOGIC LR WINDOW (CREW CAB) LT BLU WIRE LT DOORS CIRCUIT BREAKER LT GRN WIRE ORG/ WIRE PWR WND LOCKOUT LR SIG PWR WND LOCKOUT RR SIG PWR WND MOTOR LF DOWN CTRL PWR WND MOTOR LF UP CTRL PWR WND MOTOR LR REAR DOWN CTRL PWR WND MOTOR LR REAR UP CTRL LEFT REAR WINDOW PWR WND MOTOR RF DOWN CTRL PWR WND MOTOR RF UP CTRL PWR WND MOTOR RR REAR DOWN CTRL PWR WND MOTOR RR REAR UP CTRL PWR WND SW LR DOWN SIG PWR WND SW LR UP SIG PWR WND SW RR DOWN SIG PWR WND SW RR UP SIG PWR WND SWITCH LR DOWN SIGNAL PWR WND SWITCH LR UP SIGNAL PWR WND SWITCH RR DOWN SIGNAL PWR WND SWITCH RR UP SIGNAL RIGHT REAR WINDOW RIGHT REAR WINDOW MOTOR RIGHT REAR WINDOW SWITCH (CREW CAB ONLY) RR WINDOW (CREW CAB) RT DOORS CIRCUIT BREAKER SPLICE PACK SWITCH POWER TAN WIRE WHT WIRE WINDOW DOWN WINDOW DOWN DN WINDOW LOCKOUT INDICATOR DOWN WINDOW LOCKOUT SWITCH WINDOW PASSENGER WINDOW SWITCH PASSENGER WINDOW UP YEL 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

AUDIO AMPLIFIER BARE BARE 5 6 BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM 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) 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) SERIAL DATA SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) YEL WIRE