Chevrolet Silverado 1500 (2000-2012) iat sensor Wiring diagrams

1-2 SOL 2 3 4 PPL 2-3 SOL 25 26 27 PNK PNK WIRE 28 29 30 PNK WIRE 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLK/WHT WIRE BLU WIRE BODY JUNCTION BLOCK BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (IN DISTRIBUTOR) CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE SOLENOID (TOP RIGHT REAR OF ENGINE) EVAP CANISTER VENT VALVE (LEFT FRONT SIDE OF FUEL TANK) EXHAUST GAS RECIRCULATION VALVE (TOP RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) FUSE FUSE BLOCK BRAKE FUSE GRY DK GRN WIRE GRY WIRE HOT IN RUN, START IAT SENSOR IGN LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK PNK 9 10 11 12 13 14 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 5 6 PPL/WHT WIRE RED WIRE RED/BLK WIRE REV SIGNAL STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC PWM SOL TCC SOL TFT SENSOR UNDER- HOOD JUNCTION BLOCK VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

1786 472 TRANSMISSIONS SYSTEM 335 465 COOLING FANS SYSTEM 5514 1669 1671 5360 AIR CONDITIONING SYSTEM A/C CL CTRL ACC SER DATA ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM 2700 2709 1274 AIR CONDITIONING SYSTEM TRANSMISSIONS SYSTEM AXL SW SIG PNK WIRE B+ LO REF PPL BANK 1 SENSOR 2 (NEAR LEFT SIDE OF ENGINE) BANK 2 SENSOR 2 (NEAR RIGHT SIDE OF ENGINE) BLK WIRE BLK/WHT WIRE BRAKE PADAL POSITION SENSOR BRN WIRE BRN/WHT WIRE CFAN HI CTRL VSS CFAN LO CTRL FP RLY CTRL COMPUTER DATA LINES SYSTEM COOLING FANS 473 1827 SYSTEM ANTI-LOCK BRAKES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FRONT FUEL PUMP, SENDER ASSEMBLY (IN FRONT FUEL TANK) FUEL PMP RELAY FUEL PUMP FUSE 20 FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL PUMP, SENDER ASSEMBLY) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES IAT SENSOR IGN LO REF LO REF A/C PRESS SIG LO REF FTP SIG GMLAN (+) GMLAN (-) BRK APLY VOL SENS LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF MAF SIG MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR (RIGHT FRONT OF ENGINE) MIL CTRL NCA WIRE ORG/BLK WIRE ORG/WHT WIRE P/N SIG IAT SIG PNK PNK WIRE PNK WIRE PPL PPL FUEL LVL PPL/WHT WIRE PWT RLY CTRL RED/WHT WIRE SENS SIG SIGNAL STARTING/ CHARGING SYSTEM STRT RLY CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOS SIG TCC SIG TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VOL SENS BRK SPLY W/ TWO SPEED TRANSFER CASE W/O TWO SPEED TRANSFER CASE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SOL 2 3 4 PPL 2-3 SOL 25 26 27 PNK PNK WIRE 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLK/WHT WIRE BLU WIRE BODY JUNCTION BLOCK BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (IN DISTRIBUTOR) CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE SOLENOID (TOP RIGHT REAR OF ENGINE) EVAP CANISTER VENT VALVE (LEFT FRONT SIDE OF FUEL TANK) EXHAUST GAS RECIRCULATION VALVE (TOP RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) FUSE FUSE BLOCK BRAKE FUSE GRY DK GRN WIRE GRY WIRE HOT IN RUN, START IAT SENSOR IGN LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/ WHT WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK PNK 9 10 11 12 13 14 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 5 6 PPL/WHT WIRE RED WIRE RED/ BLK WIRE RED/BLK WIRE REV SIGNAL STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC PWM SOL TCC SOL TFT SENSOR UNDER- HOOD JUNCTION BLOCK VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE

28 29 30 PNK WIRE 28 29 PNK WIRE ACCELERATOR PEDAL POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUSE FUSE BLOCK GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 24 25 26 27 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE TP SENS 1 TP SENS 2 UNDERHOOD JUNCTION BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

28 29 30 PNK WIRE 28 29 PNK WIRE ACCELERATOR PEDAL POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUSE FUSE BLOCK GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 24 25 26 27 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE TP SENS 1 TP SENS 2 UNDER- HOOD JUNCTION BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

27 28 29 PNK WIRE 28 29 PNK WIRE ACT CNTRL APP SENS 1 APP SENS 2 APP SENS 3 BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUEL COMPOSITION SENSOR (FLEX FUEL) FUSE GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN INTAKE AIR TEMPERATURE/ MASS AIRFLOW SENSOR (IN AIR INDUCTION DUCT) LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 23 24 25 26 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 2 GRD SENS 3 GRD SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) (ON THROTTLE BODY) TP SENS 1 TP SENS 2 UNDER- HOOD FUSE BLOCK UNDERHOOD FUSE BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

28 29 30 PNK WIRE 28 29 PNK WIRE ACCELERATOR PEDAL POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUSE FUSE BLOCK GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 24 25 26 27 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE TP SENS 1 TP SENS 2 UNDERHOOD JUNCTION BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

28 29 30 PNK WIRE 28 29 PNK WIRE ACCELERATOR PEDAL POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUSE FUSE BLOCK GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 24 25 26 27 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE TP SENS 1 TP SENS 2 UNDER- HOOD JUNCTION BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

27 28 29 PNK WIRE 28 29 PNK WIRE ACT CNTRL APP SENS 1 APP SENS 2 APP SENS 3 BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT FUSE FUEL COMPOSITION SENSOR (FLEX FUEL) FUSE GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT IN RUN, START IAT SENSOR IGN INTAKE AIR TEMPERATURE/ MASS AIRFLOW SENSOR (IN AIR INDUCTION DUCT) LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/BLK WIRE PNK PNK 9 10 11 12 13 14 WIRE PNK WIRE PPL PPL PNK PNK 23 24 25 26 WIRE PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/BLK WIRE S/C INPUT SENS 1 GRD SENS 2 GRD SENS 3 GRD SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (W/ ELECTRONIC THROTTLE CONTROL) (ON THROTTLE BODY) TP SENS 1 TP SENS 2 UNDER- HOOD FUSE BLOCK UNDERHOOD FUSE BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE