GMC Envoy II (2001-2009) engine control module (ecm) (near lower left front of engine) Wiring diagrams

1-2 SHIFT SOL VALVE 12 7 MIL IND CTRL CHMSL SPLY 2-3 SHIFT SOL VALVE 3-2 SOL VALVE A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH A/T FLUID TEMP SENSOR TCC PWM SOL VALVE AUTOMATIC TRANSMISSION BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (NEAR LOWER LEFT FRONT OF ENGINE) FRONT HI SIG GRY WIRE INPUT SPEED SENSOR (ISS) INSTRUMENT PANEL CLUSTER LOGIC IGN LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PNK 12 13 WIRE PNK WIRE PPL PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE REV TAN WIRE TAN/BLK WIRE TCC SOL VALVE WHT WIRE YEL WIRE YEL/BLK WIRE

2500 2501 420 53 33 2 SERIAL DATA BUS + SERIAL DATA BUS - CRUISE RELEASE ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL, ON BRACKET) BLK WIRE BLK/WHT WIRE BRN WIRE CLOSE CRUISE IND DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (NEAR LOWER LEFT FRONT OF ENGINE) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN OR START HOT IN RUN REAR FUSE BLOCK (BELOW LEFT REAR SEAT) HVAC I FUSE 39 IGN IGN E FUSE 22 INSTRUMENT PANEL CLUSTER (IPC) LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE ON/OFF SWITCH ORG/ WIRE PNK BATT IPC CLASS 2 SERIAL WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL CRUISE RELEASE PPL PPL PPL/WHT WIRE RES/ACCEL SWITCH SERIAL DATA SET/COAST SWITCH STOP LAMP FUSE 12 STOP LAMP SWITCH (ON BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/WHT WIRE THROTTLE BODY (FRONT OF INTAKE DUCT) TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) VEH STOP FUSE 34 VEHICLE SPEED SENSOR (VSS) (ON LEFT REAR OF TRANSFER CASE) WHT WIRE WHT/BLK WIRE YEL WIRE

5 VOLT REF A/C REF PRES A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE LINE NEAR A/C COMPRESSOR) ANTI-LOCK BRAKE SYSTEM BANK 2 SENSOR 1 BANK 2 SENSOR 2 BLK WIRE COMPUTER DATA LINES SYSTEM COOL FAN SPD COOLING FANS SYSTEM COOLING FANS SYSTEM STARTING/CHARGING SYSTEM CYL SOL CTRL 3 CYL SOL CTRL 1 DEL TORQUE SIG CYL SOL CTRL 4 CYL SOL CTRL 2 DK BLU WIRE DK GRN/WHT WIRE ECT SENSOR ENGINE CONTROL MODULE (ECM) (NEAR LOWER LEFT FRONT OF ENGINE) EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID (ON TOP OF ENGINE) GRY WIRE HI SPD DATA + LOW REF LOW REF GEN FIELD DUTY LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (TOP OF ENGINE) MAP SENSOR NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK PNK PNK 1 2 3 4 WIRE PNK WIRE PNP SWITCH EVAP CAN COOL FAN CL PPL PPL GEN REG CTRL PPL PPL RED/BLK WIRE RED/WHT WIRE REQ TORQUE SIG SHUTOFF CYLINDER SOLENOID 1, CYLINDER 1 SHUTOFF CYLINDER SOLENOID 2, CYLINDER 4 SHUTOFF CYLINDER SOLENOID 3, CYLINDER 6 SHUTOFF CYLINDER SOLENOID 4, CYLINDER 7 SIG HIGH - FRT STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSION CONTROL SYSTEM WHT/BLK WIRE YEL WIRE

1 2 3 4 5 PNK PNK PNK PNK WIRE 5 VOLT REF A/C COMP CL REL AIR CONDITIONING SYSTEM ANTI-LOCK BRAKE SYSTEM APP SENSOR 1 APP SENSOR 2 BATTERY BLK WIRE BRAKE BOOST VAC BRN WIRE BRN/WHT WIRE CHMSL SUPPLY VOLT COMPUTER DATA LINES SYSTEM CRANK FUSE 17 CRANK VOLTAGE CRUISE CONTROL SYSTEM CRUISE CTRL ON DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM I FUSE ENGINE CONTROL MODULE (ECM) (NEAR LOWER LEFT FRONT OF ENGINE) ENGINE SPEED SIG EVAP CAN VENT SOL FUEL LEVEL SENS FUEL PMP REL CTRL FUEL PUMP RELAY 41 FUEL TANK PRESS GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ACC, RUN OR START HOT IN RUN OR START HOT IN START IGN 0 FUSE 47 IGN 0 VOLT IGN 1 VOLT IGN E FUSE INSTRUMENT CLUSTER SYSTEM LOW REF LT BLU WIRE MIL CTRL NOT USED ORG/ WIRE PCM B FUSE 10 PNK PNK PNK PNK 1 2 3 4 WIRE PNK WIRE PPL PPL 15 16 17 18 19 20 21 22 23 24 25 PWR/TRN RELAY REAR FUSE BLOCK (BELOW LEFT REAR SEAT) RES/ACC SW SERIAL DATA SET/COAST SW STARTER ENABLE REL STARTING/CHARGING SYSTEM TAN WIRE TCC BRAKE SW TCM/ CANISTER FUSE 15 TRANSMISSION SYSTEM UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) VSS WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

12 VOLT REF 5 VOLT REF 19 20 21 PNK WIRE BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CMP SENSOR SIG OIL PRESS SENS DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (NEAR LOWER LEFT FRONT OF ENGINE) FUEL INJ 2 CTRL IC 7 CTRL IC 5 CTRL LOW REF FUEL INJ 3 CTRL IC 8 CTRL IC 4 CTRL LOW REF FUEL INJ 4 FUEL INJ 7 FUEL INJ 1 GROUND FUEL INJ 6 CTRL IC 2 CTRL IC 6 CTRL IC 3 CTRL FUEL INJ 8 CTRL FUEL INJ 5 CTRL FUEL INJECTORS GRY WIRE IAT IAT SENSOR CKP SENSOR TP SENSOR 1 KS 2 SIG KS 2 SIG KS 1 SIG KS 1 SIG LOW REF LOW REF 12 VOLT REF 5 VOLT REF LOW REF LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAF MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR (IN AIR INTAKE DUCT) PNK 16 17 18 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 1 2 3 4 5 6 7 8 9 PPL 12 13 14 15 PPL TP SENSOR 2 MAF SENSOR PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE TAC MTR CTRL 1 TAC MTR CTRL 2 IGN 1 VOLT TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) YEL WIRE YEL/BLK (OR WIRE YEL/BLK WIRE