Chevrolet Chevy Express G2500 (1996-2012) 1226 1225 range mode sel c range mode sel b range mode sel a Wiring diagrams

1226 1225 RANGE MODE SEL C RANGE MODE SEL B RANGE MODE SEL A 27 28 29 30 31 PPL 3/2 SHIFT SOL. PRESSURE CONTROL SOLENOID VALVE 397 1272 PPL APP 2 GND APP 1 GND APP 1 SIG 7 8 9 10 12 13 14 15 VSS RTN GROUND A/T FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AIR CONDITIONING SYSTEM ANTI-LOCK BRAKE SYSTEM AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CLOSURE SIG BOOST SENS INPUT PRESSURE CTRL SOL CRUISE CONTROL SWITCH DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK/ PNK WIRE ECT SIG GRN WIRE GRY WIRE GRY/BLK WIRE IAT SIG APP 2 SIG GLOW PLUG RELAY PRESSURE CTRL SOL FUEL TEMP SENS TFT SENS LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK PPL 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (BEHIND CENTER OF DASH) PPL PPL CKP GROUND A/C REQUEST PPL TCC/ABS SW IN BRAKE SWITCH INPUT CRUISE SET/COAST SIG PPL/WHT WIRE RADIO, POWER STEERING CONTROL MODULE RED WIRE RED/BLK WIRE RESUME SENSOR GND SET- SHIFT SOL. SHIFT SOL. SOLID STATE TAN WIRE TAN/BLK WIRE TIMING STEPPER MTR (HIGH) CRUISE ON/OFF SW TIMING STEPPER MTR (LOW) TIMING STEPPER MTR (LOW) TRANSMISSION SPEED INPUT TRANSMISSION TEMPERATURE SENSOR VEHICLE SPEED SENSOR (LEFT SIDE OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (BELOW DASH, NEAR STEERING COLUMN) VSS SIG VSS SIG VSS HI VSS LO SECOND VSS SIG WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL A/T FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH 1226 1225 RANGE MODE SEL C RANGE MODE SEL B RANGE MODE SEL A 2-3 SHIFT SOL 27 28 29 30 31 PPL 397 1272 PPL APP 2 GND APP 1 GND APP 1 SIG 7 8 9 10 12 13 14 15 VSS RTN GROUND AIR CONDITIONING SYSTEM ANTI-LOCK BRAKE SYSTEM AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLOSURE SIG BOOST SENS INPUT PRESSURE CTRL SOL COIL 1 LOW COIL 2 LOW COIL 2 HIGH CRUISE ON/OFF SW CRUISE CONTROL SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK/ PNK WIRE ECT SIG GRN WIRE GRY WIRE GRY/BLK WIRE IAT SIG APP 2 SIG GLOW PLUG RELAY PRESSURE CTRL SOL FUEL TEMP SENS TFT SENS LT BLU WIRE LT BLU/WHT WIRE LT DK PNK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK PPL 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (BEHIND CENTER OF DASH) PPL PPL CKP GROUND A/C REQUEST PPL TCC/ABS SW IN BRAKE SWITCH INPUT CRUISE SET/COAST SIG PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE RESUME SECOND VSS SIG SENSOR GND SET- SOLID STATE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION SPEED INPUT VEHICLE SPEED SENSOR MODULE (BELOW DASH, NEAR STEERING COLUMN) VSS SIG VSS SIG VSS HI WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL A/T FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH 1226 1225 RANGE MODE SEL C RANGE MODE SEL B RANGE MODE SEL A 2-3 SHIFT SOL 27 28 29 30 31 PPL 397 1272 PPL APP 2 GND APP 1 GND APP 1 SIG 7 8 9 10 12 13 14 15 VSS RTN GROUND AIR CONDITIONING SYSTEM ANTI-LOCK BRAKE SYSTEM AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLOSURE SIG BOOST SENS INPUT PRESSURE CTRL SOL COIL 1 LOW COIL 2 LOW COIL 2 HIGH CRUISE ON/OFF SW CRUISE CONTROL SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK/ PNK WIRE ECT SIG GRN WIRE GRY WIRE GRY/BLK WIRE IAT SIG APP 2 SIG GLOW PLUG RELAY PRESSURE CTRL SOL FUEL TEMP SENS TFT SENS LT BLU WIRE LT BLU/WHT WIRE LT DK PNK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK PPL 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (BEHIND CENTER OF DASH) PPL PPL CKP GROUND A/C REQUEST PPL TCC/ABS SW IN BRAKE SWITCH INPUT CRUISE SET/COAST SIG PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE RESUME SECOND VSS SIG SENSOR GND SET- SOLID STATE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION SPEED INPUT VEHICLE SPEED SENSOR MODULE (BELOW DASH, NEAR STEERING COLUMN) VSS SIG VSS SIG VSS HI WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE