GMC Sierra 2500 (2000-2004) serial data Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TP SENSOR 1 SIG 15 14 SERIAL DATA SERIAL DATA ACCELERATION PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) APP SENSOR 2 SIG LOW REF LOW REF APP SENSOR 1 SIG BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE FUSE CRUISE IND DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ETC/ECM FUSE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START IGN INSTRUMENT PANEL CLUSTER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LOW REF (NOT USED) LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NCA WIRE OF TRANSFER CASE) OF TRANSMISSION) OFF ON OFF ORG/ WIRE ORG/BLK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RESUME/ ACCEL CRUISE CONTROL ON/OFF SWITCH RESUME/ACCEL SERIAL DATA SERIAL DATA CLASS 2 DATA SET/ COAST STOP LPS FUSE STOPLAMP SWITCH (TOP OF BRAKE PEDAL) TAN WIRE THROTTLE ACTUATOR CONTROL MODULE (LEFT REAR OF ENGINE COMPT) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDER- HOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (NEAR BATTERY) VEH STOP FUSE VEHICLE SPEED SENSOR (VSS) VSS HIGH VSS LOW WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TP SENSOR 1 SIG 15 14 SERIAL DATA SERIAL DATA ACCELERATION PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) APP SENSOR 2 SIG LOW REF LOW REF APP SENSOR 1 SIG BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE FUSE CRUISE IND DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ETC/ECM FUSE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START IGN INSTRUMENT PANEL CLUSTER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LOW REF (NOT USED) LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NCA WIRE OF TRANSFER CASE) OF TRANSMISSION) OFF ON OFF ORG/ WIRE ORG/BLK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RESUME/ ACCEL CRUISE CONTROL ON/OFF SWITCH RESUME/ACCEL SERIAL DATA SERIAL DATA CLASS 2 DATA SET/ COAST STOP LPS FUSE STOPLAMP SWITCH (TOP OF BRAKE PEDAL) TAN WIRE THROTTLE ACTUATOR CONTROL MODULE (LEFT REAR OF ENGINE COMPT) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDER- HOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (NEAR BATTERY) VEH STOP FUSE VEHICLE SPEED SENSOR (VSS) VSS HIGH VSS LOW WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TP SENSOR 1 SIG ACCELERATION PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) APP SENSOR 1 SIG BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL ON/OFF SWITCH CRUISE FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ETC FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN, START LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LOW REF APP SENSOR 3 SIG LOW REF LOW REF APP SENSOR 2 SIG PPL LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NCA WIRE OF TRANSFER CASE) OF TRANSMISSION) OFF ORG/ WIRE ORG/BLK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RESUME/ACCEL SERIAL DATA SET/COAST STOP LPS FUSE STOPLAMP SWITCH (TOP OF BRAKE PEDAL) TAN WIRE THROTTLE ACTUATOR CONTROL MOTOR (ON THROTTLE BODY) THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) UNDERHOOD FUSE BLOCK (NEAR BATTERY) VEH STOP FUSE VEHICLE SPEED SENSOR (VSS) VEHICLE SPEED SENSOR ADAPTER VSS HIGH VSS LOW WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AMBIENT LIGHT SENSOR (TOP CENTER OF DASH) ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM DOOR LOCKS SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK (NEAR LEFT KICK PANEL) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRN WIRE CARGO LP SW INPUT INTERIOR LAMP CTRL FLASH TO PASS SW SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LATCH SW SIG COURTESY LAMP PWR DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DRIVER DOOR KEY SW SIG LF DR OPEN SW SIG FRONT FOG LP SW INT LP DEFEAT SW SIG DRL RLY COIL CLASS 2 DATA GROUND IGN 1 EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM FOG LP RLY CTRL EXTERIOR COURTESY LPS RLY CTRL GROUND BATTERY DOOR UNLOCK CTRL DOOR LOCK CTRL GRY WIRE GRY/BLK WIRE HEADLAMP SW INPUT LED DIM SIG VSS HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM HOT AT ALL TIMES TBC FUSE HOT IN RUN CRUISE FUSE HOT IN RUN, START IGN 1 FUSE IGN 3 PRK BK SW SIG LT SEAT BELT SW TOW/HAUL SW SIG IGNITION KEY ALARM SWITCH INST PANEL LP PWR AMBIENT LIGHT SEN SIG INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM KEY IN IGN SW SIG LEFT I/P FUSE BLOCK LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT TURN SIG LAMP PWR RT TURN SIG LAMP PWR NCA WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH PNK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM (RAP) INTERIOR LIGHTS SYSTEM HORNS SYSTEM PPL PPL HIGH BEAM INPUT INTERIOR PARK LP PWR PPL/WHT WIRE RAP RELAY CTRL INADVERTENT PWR RLY CTRL HORN RLY CTRL RED/WHT WIRE SECURITY SYSTEM SEN SIG SERIAL DATA TAN WIRE TOW/HAUL SWITCH UNDERHOOD JUNCTION BLOCK WARNING SYSTEM WHT WIRE YEL WIRE

10 12 PNK WIRE 16 5 PNK WIRE AIR TEMP SENSOR AMBIENT PHOTO SENSOR BACK UP LAMP VOLTAGE OUTPUT BACK UP VOLTAGE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK COMPASS COMPUTER DATA LINES SYSTEM DK GRN/WHT WIRE DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER OUTSIDE REARVIEW MIRROR ELECTROCHROMIC MIRROR GROUND GRY WIRE HOT IN RUN, START IGN 1 INSIDE REARVIEW MIRROR LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOW REF LOW REF MIR SIGNAL LT GRN WIRE NCA WIRE OUTSIDE AIR TEMPERATURE SENSOR PNK WIRE RR LIGHT PHOTO SENSOR SELECTOR SWITCH SERIAL DATA SIR FUSE TEMP UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE

22 14 SERIAL DATA BATTERY 7 8 SUPPLY VOLT LOW REF BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DDM FUSE DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER OUTSIDE REARVIEW MIRROR FRONT PASSENGER DOOR MODULE (FPDM) (IN RIGHT FRONT DOOR) GROUND HOT AT ALL TIMES HVAC CONTROL MODULE (IN CENTER OF DASH) LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOW REF ORG/ WIRE PASSENGER OUTSIDE REARVIEW MIRROR PDM FUSE R DEF REAR DEFOG SWITCH RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) SERIAL DATA SUPPLY VOLT TAN WIRE WHT 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 LT DK PNK WIRE 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 HI HEAT IND HI HEAT INDICATOR HOT AT ALL TIMES I/P RELAY BLOCK LEFT I/P FUSE 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 NCA WIRE ORG/ WIRE PDM FUSE PNK WIRE PPL RED WIRE RED/WHT WIRE RIGHT I/P FUSE BLOCK RT DOORS CIRCUIT BREAKER SEATS CIRCUIT BREAKER SERIAL DATA SWITCH POWER TAN WIRE WHT WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, NEAR STEERING COLUMN) DK BLU WIRE DRIVER DOOR LOCK ACTUATOR DRIVER DOOR LOCK SWITCH DRIVER UNLOCK RELAY FRONT PASSENGER DOOR LOCK ACTUATOR FRONT PASSENGER DOOR LOCK SWITCH GASOLINE DIESEL GRY WIRE HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGNITION KEY ALARM SWITCH (ON IGNITION KEY CYLINDER) INSTRUMENT PANEL CLUSTER LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR DOOR LOCK ACTUATOR LOCK LOCK RELAY LOCKS FUSE LT BLU WIRE LT GRN WIRE ORG/ WIRE PCM ECM (LEFT FRONT OF ENGINE COMPARTMENT) RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT REAR DOOR LOCK ACTUATOR SERIAL DATA SPLICE PACK TAN WIRE UNLOCK UNLOCK CTRL LOCK CTRL IGN KEY SW UNLOCK CTRL LOCK CTRL RELAY CTRL BATTERY SERIAL DATA UNLOCK RELAY W/ CREW CAB WHT WIRE YEL WIRE

4 5 RF + GROUND 6 7 8 9 10 DIMMER I/P LAMP ANTENNA BLK WIRE BODY RELAY BLOCK BRN WIRE DATA LINK CONNECTOR DK BLU WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT WITH RAP RELAY ENERGIZED IGNITION BATTERY LEFT FRONT DOOR SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR DOOR SPEAKER LF+ LR (-) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE RADIO RADIO FUSE RDO I FUSE RF+ RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER RR (-) SERIAL DATA TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) YEL WIRE

BLK WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM HOT AT ALL TIMES HOT IN RUN, START HTR HVAC CONTROL MODULE (IN CENTER OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN LOGIC LT GRN WIRE PPL REAR DEFOG SWITCH REAR DEFOGGER RELAY REAR WINDOW DEFOGGER GRID RELAY CNTRL SERIAL DATA WHT WIRE