GMC Sierra 3500 (2002-2006) intake air heater relay Wiring diagrams

ABS FUSE AUDIO AMPLIFIER BATTERY (LEFT) BATTERY (RIGHT) BATTERY FUSE BLK WIRE BLUNT CUT) BODY CONTROL MODULE EMERGENCY VEHICLE ROOF LAMP RELAY CIG LTR FUSE CIGAR LIGHTER DATA LINK CONNECTOR DIGITAL RADIO RECEIVER DIGITAL RADIO RECEIVER REAR SEAT AUDIO (RSA) CONTROLLER DUAL GENERATOR ELECTRONIC BRAKE CONTROL MODULE EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID EXCEPT LUXURY FUSE FUSE HOLDER FUSIBLE LINK GENERATOR (LEFT) GENERATOR (RIGHT) GLOW PLUG CONTROLLER GLOW PLUG RELAY GLOW PLUG/ INTAKE HEATER RELAY ASSEMBLY I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN A FUSE IGN B FUSE INTAKE AIR HEATER RELAY LUXURY MINI FUSE MOBILE RADIO MOBILE RADIO FUSE MOBILE RADIO FUSE BLOCK MOBILE RADIO RELAY NCA WIRE NOT USED NOT USED ORG/ WIRE RADIO RADIO AMP FUSE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER (CREW CAB) RADIO REAR WHEEL STEERING REAR WHEEL STEERING CONTROL MODULE REAR WHEEL STEERING FUSE RED WIRE RR WIPER FUSE EAP FUSE RTD FUSE STARTER STARTER RELAY STUD 1 FUSE STUD 2 FUSE SUNROOF FUSE TBC BATT FUSE TO IGNITION SWITCH (DIAGRAM 4 OF 5) TO IGNITION SWITCH (DIAGRAM 5 OF 5) TO IPC/DIC FUSE (DIAGRAM 2 OF 5) TRAILER CONNECTOR TRAILER TOW (BLUNT CUT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK UPFITTER OPTION VSES/ ECAS FUSE W/ CALIFORNIA EMISSIONS W/O CALIFORNIA EMISSIONS WHT WIRE WRECKER RELAY

A/C COMP FUSE A/C COMP RELAY BODY CONTROL MODULE DDM FUSE DRIVER DOOR UNLOCK RELAY DRL FUSE DRL RELAY ECC FUSE AUX PWR 2 FUSE ECM 1 FUSE EGR VALVE VENT SOLENOID EGR VALVE SOLENOID FUEL HEATER ENGINE CONTROL MODULE EXC BASE FLASH FUSE FOG LP FUSE FOG LP RELAY FROM MBEC 1 FUSE (DIAGRAM 3 OF 5) FROM PCM B FUSE (DIAGRAM 2 OF 5) FRONT PASSENGER DOOR MODULE SEAT ADJUSTER SWITCH (DRIVER) FUEL HT FUSE FUSE FUSE FUSE GLOW PLUG CONTROLLER EGR VALVE THROTTLE VALVE SOLENOID HDLP LOW RELAY HDLP-HI RELAY HORN RELAY I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INTAKE AIR HEATER RELAY INTAKE AIR TEMPERATURE (IAT)/MASS AIR FLOW (MAF) SENSOR LBEC 1 FUSE LBEC 2 FUSE LOCK RELAY LT DOORS CIRCUIT BREAKER LUMBAR BOLSTER SWITCH (FRONT PASSENGER) MBEC 1 FUSE MEMORY SEAT MODULE ORG/ WIRE PARK LP RELAY PDM FUSE LOCKS FUSE PNK PNK WIRE PNK WIRE RED WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RT DOOR CIRCUIT BREAKER SEAT ADJUSTER SWITCH (FRONT PASSENGER) SEAT CIRCUIT BREAKER TO FUEL HT FUSE (DIAGRAM 3 OF 5) TURN SIGNAL/ HAZARD FLASHER MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNLOCK RELAY W/S WASH FUSE W/S WASH RELAY WINDOW SWITCH (LEFT REAR) (CREW CAB) DRIVER DOOR MODULE WINDOW SWITCH (RIGHT REAR)

25 26 PNK WIRE 28 29 30 PPL 30 SERIES 20 SERIES ACCELERATOR PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) BATTERY BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR DK BLU WIRE DK BLU/RED WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/RED WIRE DK GRN/WHT WIRE ECMPRV FUSE EDU RELAY FUEL HEATER (TOP OF FUEL FILTER ELEMENT) FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) FUEL PUMP RELAY FUSE HOLDER FUSIBLE LINK GLOW PLUG CONTROLLER GLOW PLUGS GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE HOT IN RUN, START UNDERHOOD FUSE BLOCK FUEL HT FUSE IGN 1 INTAKE AIR HEATER INTAKE AIR HEATER RELAY INTAKE AIR TEMPERATURE (IAT)/ MASS AIRFLOW (MAF) SENSOR (IN AIR INDUCTION TUBE) LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PCMB FUSE PLUG 1 V+ PLUG 2 V+ PLUG 3 V+ PLUG 4 V+ PLUG 5 V+ PLUG 6 V+ PLUG 7 V+ PLUG 8 V+ PLUG SIG PNK WIRE PNK/BLK WIRE PPL PPL 21 22 RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RELAY CTRL TAN WIRE WHT/BLK WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

28 29 PPL 30 SERIES 20 SERIES APP 1 APP 3 APP 2 ACCELERATOR PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) BATTERY BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) DK BLU WIRE DK BLU/RED WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/RED WIRE DK GRN/WHT WIRE ECMPRV FUSE EDU RELAY FUEL HEATER (TOP OF FUEL FILTER ELEMENT) FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) FUEL PUMP RELAY FUSE HOLDER FUSIBLE LINK GLOW PLUG CONTROLLER GLOW PLUGS GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE HOT IN RUN, START UNDERHOOD FUSE BLOCK FUEL HT FUSE IGN 1 INTAKE AIR HEATER INTAKE AIR HEATER RELAY LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PCMB FUSE PLUG 1 V+ PLUG 2 V+ PLUG 3 V+ PLUG 4 V+ PLUG 5 V+ PLUG 6 V+ PLUG 7 V+ PLUG 8 V+ PLUG SIG PNK 18 19 WIRE PNK WIRE PNK/BLK WIRE PNK/YEL WIRE PPL RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RELAY CTRL TAN WIRE WHT/BLK WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

20 SERIES 23 24 PNK WIRE 27 28 29 PPL 30 SERIES ACCELERATOR PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECMRPV FUSE EDU RELAY FUEL HEATER FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) FUEL PUMP RELAY FUSE HOLDER GLOW PLUG RELAY GLOW PLUG/ INTAKE HEATER RELAY ASSEMBLY GLOW PLUGS GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE HOT IN RUN, START UNDER- HOOD FUSE BLOCK FUEL HT FUSE INTAKE AIR HEATER INTAKE AIR HEATER RELAY INTAKE AIR TEMPERATURE (IAT)/ MASS AIRFLOW (MAF) SENSOR (IN AIR INDUCTION TUBE) LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PCMB FUSE PNK WIRE PNK/BLK WIRE PNK/YEL WIRE PPL PPL 20 21 RED WIRE RED/BLK WIRE TAN WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

20 SERIES 30 SERIES APP 2 ACCELERATOR PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) APP 3 APP 1 BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECMPRV FUSE EDU RELAY FUEL HEATER (TOP OF FUEL FILTER ELEMENT) FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) FUEL PUMP RELAY FUSE HOLDER GLOW PLUG RELAY GLOW PLUG/ INTAKE HEATER RELAY ASSEMBLY GLOW PLUGS GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE HOT IN RUN, START UNDERHOOD FUSE BLOCK FUEL HT FUSE INTAKE AIR HEATER INTAKE AIR HEATER RELAY LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PCMB FUSE PNK WIRE PNK/BLK WIRE PNK/YEL WIRE PPL PPL 28 29 RED WIRE RED/BLK WIRE TAN WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

20 SERIES 30 SERIES ACCELERATOR PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECMB FUSE ECMPRV FUSE FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) FUEL PUMP RELAY FUSE HOLDER GLOW PLUG RELAY GLOW PLUG/ INTAKE HEATER RELAY ASSEMBLY GLOW PLUGS GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE HOT IN RUN, START UNDER- HOOD FUSE BLOCK FUEL HT FUSE IGN 1 RELAY INTAKE AIR HEATER (REAR OF ENGINE) INTAKE AIR HEATER RELAY INTAKE AIR TEMPERATURE/ MASS AIRFLOW SENSOR (IN AIR INDUCTION TUBE) LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PNK/YEL WIRE PPL PPL 28 29 RED WIRE RED/BLK WIRE TAN WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE