GMC Sierra 2500 (2000-2004) electronic suspension system Wiring diagrams

BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK GRN/WHT WIRE DRIVER WINDOW/DOOR LOCK SWITCH ELECTRONIC SUSPENSION SYSTEM EXTERIOR LAMPS FIRM INDICATOR FOG LAMP FRONT PASSENGER WINDOW/DOOR LOCK SWITCH HEADLAMP LEVELING SWITCH I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) MULTIFUNCTION ACCESSORY SWITCH PPL PPL/WHT WIRE RIGHT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) ROOF BEACON SWITCH SELECTABLE RIDE SWITCH WHT WIRE

1 2 3 4 5 6 PNK WIRE 3-2 SS SENS RTN ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE BLOCK IGN 0 FUSE FUSE FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK PPL 7 8 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P CLUTCH SW PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND SENS GND EGR INPUT TAN WIRE TAN/WHT WIRE UNDERHOOD JUNCTION BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

3-2 SS SENS RTN ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE BLOCK IGN 0 FUSE FUSE FUSE GND SENS GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK 1 2 3 4 5 WIRE PNK PNK WIRE PNK PPL 6 7 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P CLUTCH SW PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND EGR INPUT TAN WIRE UNDER- HOOD JUNCTION BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

3-2 SS CTRL REF LOW A/C SYSTEM ANTI-LOCK BRAKES SYS 470 451 1671 1667 451 1669 1664 1478 ANTI-LOCK BRAKES SYS 771 420 776 48 1744 846 1101 625 451 BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ELECTRONIC SUSPENSION SYSTEM FUEL COMP SIG B+ CLS 2 DATA CLS 2 DATA FUSE FUSE FUSE GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START LEFT I/P FUSE BLOCK IGN 0 FUSE HOT IN RUN, START INJ 7 CTRL INJ 4 CTRL INJECTORS KS SIGNAL KS SIGNAL CKP SIG REQ TORQ SIG SERIAL DATA SERIAL DATA LEV SW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV SW SIG ORG/ WIRE ORG/BLK WIRE PCMB FUSE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL/WHT WIRE PRND B SIG CMP SIG ECT SIG IGN INJ 5 CTRL INJ 8 CTRL RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE REF LOW REF LOW (A/T) REF LOW REF LOW GND STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 PNK WIRE 3-2 SS SENS RTN ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM ENGINE WIRING HARNESS JUNCTION BLOCK FUSE BLOCK IGN 0 FUSE FUSE FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK PPL 7 8 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P CLUTCH SW PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND SENS GND EGR INPUT TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL THEFT DETERRENT MODULE (BELOW CONTROL STEERING MODULE COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START HOT IN RUN, START LEFT I/P FUSE BLOCK IGN 0 FUSE INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND EGR INPUT SENS RTN TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK W/ REMOTE FUNCTION ACTUATOR W/O REMOTE FUNCTION ACTUATOR WHT WIRE YEL WIRE YEL/BLK WIRE

ANTI-LOCK BRAKE SYSTEM B+ CLS 2 DATA CLS 2 DATA SENS GND REF LOW BLK WIRE BLK/WHT WIRE BODY CONTROL THEFT DETERRENT MODULE (BELOW CONTROL STEERING MODULE COLUMN) BRN WIRE BRN/RED WIRE COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE ELECTRONIC SUSPENSION SYSTEM FUSE GND GND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START HOT IN RUN, START LEFT I/P FUSE BLOCK IGN 0 FUSE INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA LIFT/DIVE SIG LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL SENS GND PPL/WHT WIRE PRND A BRK SW PRND P PPL PRND B CMP ECT SIG IGN RANGE B RANGE C IGN B+ REF LOW RED WIRE RED/BLK WIRE SENS GND SENS GND EGR INPUT SENS RTN TAN WIRE UNDER- HOOD FUSE BLOCK W/ REMOTE FUNCTION ACTUATOR W/O REMOTE FUNCTION ACTUATOR WHT WIRE YEL WIRE YEL/BLK WIRE