TRANSMISSION – Chevrolet Forward Control P12 1999 – SYSTEM WIRING DIAGRAMS

TRANSMISSION

4.3L

4.3L VIN W, A/T Wiring Diagram for Chevrolet Forward Control P12 1999

List of elements for 4.3L VIN W, A/T Wiring Diagram for Chevrolet Forward Control P12 1999:

• (4.3l/5.7l: engine harn, 18 cm from left firewall grommet) (7.4l: dash harn, 15 cm from breakout to abs module)
• (4.3l/5.7l: engine harn, 19 cm from breakout to left firewall grommet) (7.4l: engine harn, 25 cm from breakout to wiper motor)
• (4.3l/5.7l: engine harn, 8 cm from breakout to ect sensor) (7.4l: engine harn, 4 cm from breakout to ground g117)
• (mil)
• (rear of left clinder head) g114 g117 (right rear of engine)
• (rear of left clinder head) g114 g119 (on top of thermostat housing)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 4.3l (vin w), 5.7l (vin r)
• 5v reference
• 7.4l (vin j)
• A/c compressor relay, generator, seat belt/ headlamps alarm module
• A/t fluid pressure manual valve position switch
• A/t input speed sensor (left side of transmission)
• A/t iss hi in
• A/t iss lo in
• Anti-lock brakes, cruise control & shift interlock systems
• Automatic transmission (4l80-e)
• Battery in
• Brake switch input
• Data class ii
• Data link connector (partial) (below dash, near steering column)
• Ecm bat fuse 6 20a
• Ecm-1 fuse 12 20a
• Ect sens input
• Electronic brake control module, cruise control module
• Engine controls system
• Engine coolant temperture sensor (top front of engine)
• Fuel injectors (engine controls system)
• Fuel pump relay & switch
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Press ctrl
• Range signal "a"
• Range signal "b"
• Range signal "c"
• Red
• S108 s121
• S118
• S119 (engine harn, near breakout to ect sensor)
• S126
• S133 s116
• S134 s114
• S135
• S138
• S143
• S150
• S170
• S200 s102
• S207 s211
• Sensor ground
• Sensor return
• Service engine soon indicator
• Solenoid
• Tcc pwm
• Tcc pwm sol
• Tcc/ stop lamps switch
• Throttle position sensor (on throttle body)
• Tp sens input
• Trans fluid temp sensor
• Trans fuse 17 10a
• Trans temp sig in
• Vehicle control module (center front of engine compt)
• Vehicle speed sensor (left rear of transmission)
• Vss hi
• Vss lo

5.7L

5.7L VIN R, A/T Wiring Diagram for Chevrolet Forward Control P12 1999

List of elements for 5.7L VIN R, A/T Wiring Diagram for Chevrolet Forward Control P12 1999:

• (4.3l/5.7l: engine harn, 18 cm from left firewall grommet) (7.4l: dash harn, 15 cm from breakout to abs module)
• (4.3l/5.7l: engine harn, 19 cm from breakout to left firewall grommet) (7.4l: engine harn, 25 cm from breakout to wiper motor)
• (4.3l/5.7l: engine harn, 8 cm from breakout to ect sensor) (7.4l: engine harn, 4 cm from breakout to ground g117)
• (mil)
• (rear of left clinder head) g114 g117 (right rear of engine)
• (rear of left clinder head) g114 g119 (on top of thermostat housing)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 4.3l (vin w), 5.7l (vin r)
• 5v reference
• 7.4l (vin j)
• A/c compressor relay, generator, seat belt/ headlamps alarm module
• A/t fluid pressure manual valve position switch
• A/t input speed sensor (left side of transmission)
• A/t iss hi in
• A/t iss lo in
• Anti-lock brakes, cruise control & shift interlock systems
• Automatic transmission (4l80-e)
• Battery in
• Brake switch input
• Data class ii
• Data link connector (partial) (below dash, near steering column)
• Ecm bat fuse 6 20a
• Ecm-1 fuse 12 20a
• Ect sens input
• Electronic brake control module, cruise control module
• Engine controls system
• Engine coolant temperture sensor (top front of engine)
• Fuel injectors (engine controls system)
• Fuel pump relay & switch
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Press ctrl
• Range signal "a"
• Range signal "b"
• Range signal "c"
• Red
• S108 s121
• S118
• S119 (engine harn, near breakout to ect sensor)
• S126
• S133 s116
• S134 s114
• S135
• S138
• S143
• S150
• S170
• S200 s102
• S207 s211
• Sensor ground
• Sensor return
• Service engine soon indicator
• Solenoid
• Tcc pwm
• Tcc pwm sol
• Tcc/ stop lamps switch
• Throttle position sensor (on throttle body)
• Tp sens input
• Trans fluid temp sensor
• Trans fuse 17 10a
• Trans temp sig in
• Vehicle control module (center front of engine compt)
• Vehicle speed sensor (left rear of transmission)
• Vss hi
• Vss lo

6.5L

6.5L VIN F, A/T Wiring Diagram for Chevrolet Forward Control P12 1999

List of elements for 6.5L VIN F, A/T Wiring Diagram for Chevrolet Forward Control P12 1999:

• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 3-2 shift
• 3-2 shift sol
• A/c compressor relay, generator & turbo charger power valve
• A/t fluid pressure manual valve position switch
• A/t input speed sensor (left side of transmission)
• A/t iss sens hi in
• A/t iss sens lo in
• A/t output speed sensor (left side of transmission)
• A12
• Accelerator pedal position module (attached to accelerator pedal)
• App 1 5v ref
• App 1 signal in
• App 2 5v ref
• App 2 signal in
• App 3 5v ref
• App 3 signal in
• Automatic transmission (4l80-e)
• B10
• B12
• Battery in
• Brake switch in
• C11
• C12
• C13
• C14
• C15
• Class ii data
• D11
• D12
• D13
• Data link connector (partial) (below dash, near steering column)
• Ecm-1 fuse 12 20a
• Ecm-bat fuse 6 20a
• Ect sensor in
• Electronic brake control module
• Engine coolant temperature sensor (top front of engine)
• Exterior lights
• Fuel pump relay & fuel pump switch/engine oil pressure indicator sensor
• G119 (top of thermostat housing)
• Gauges fuse 8 20a
• Hazard lamps flasher
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Indicator
• Instrument cluster
• Mil control
• Oss hi in
• Oss in
• Oss lo in
• Oss out
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Powertrain control module (left side of driver's island)
• Press ctrl solenoid
• Red
• S114
• S119 (engine harn, 13 cm from ground g117)
• S143
• S200 (eng harn, dash side near ignition switch)
• S202 (dash harn, 7 cm from breakout to wiper switch)
• S211
• S224 (engine harn, 16 cm from left bulkhead grommet)
• S229
• S232
• Sensor ground
• Service engine soon (mil)
• Solenoid
• Stop-haz fuse 11 15a
• Stoplamp switch in
• Tan
• Tft sensor in
• Torque converter clutch & stoplamp switch
• Trans fluid temp sensor
• Trans range "a"
• Trans range "b"
• Trans range "c"
• Transmission fuse 17 10a
• Vehicle speed sensor calibrator & engine shutoff solenoid
• Vehicle speed sensor calibrator (left side of driver's island)
• Vss in
• Vss out

6.5L VIN Y, A/T Wiring Diagram, with Electronic Engine Controls for Chevrolet Forward Control P12 1999

List of elements for 6.5L VIN Y, A/T Wiring Diagram, with Electronic Engine Controls for Chevrolet Forward Control P12 1999:

• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 3-2 shift
• 3-2 shift sol
• A/c compressor relay & generator
• A/t fluid pressure manual valve position switch
• A/t input speed sensor (left side of transmission)
• A/t iss sens hi in
• A/t iss sens lo in
• A/t output speed sensor (left side of transmission)
• A12
• Accelerator pedal position module (attached to accelerator pedal)
• App 1 5v ref
• App 1 signal in
• App 2 5v ref
• App 2 signal in
• App 3 5v ref
• App 3 signal in
• Automatic transmission (4l80-e)
• B10
• B12
• Battery in
• Brake switch in
• C11
• C12
• C13
• C14
• C15
• Class ii data
• D11
• D12
• D13
• Data link connector (partial) (below dash, near steering column)
• Ecm-1 fuse 12 20a
• Ecm-bat fuse 6 20a
• Ect sensor in
• Electronic brake control module
• Engine coolant temperature sensor (top front of engine)
• Fuel pump relay & engine oil pressure indicator sensor
• G114 (rear of left cylinder head)
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Indicator
• Instrument cluster
• Mil control
• Oss hi in
• Oss lo in
• Oss out
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Powertrain control module (left side of driver's island)
• Press ctrl solenoid
• Red
• S102 (engine harn, 32 cm from breakout to battery junction block)
• S104 (engine harn, 25 cm from breakout to battery junction block)
• S108
• S129 (engine harn, 17 cm from breakout for inline connector toward left bulkhead grommet)
• S143
• S207
• S222
• S225
• S233
• Sensor ground
• Service engine soon (mil)
• Solenoid
• Stop-haz fuse 11 15a
• Stoplamp switch in
• Tan
• Tft sensor in
• Torque converter clutch & stoplamp switch
• Trans fluid temp sensor
• Trans range "a"
• Trans range "b"
• Trans range "c"
• Transmission fuse 17 10a
• Vehicle speed sensor buffer
• Vehicle speed sensor calibrator (left side of driver's island)
• Vss lo in
• Vss out

6.5L VIN Y, A/T Wiring Diagram, without Electronic Engine Controls for Chevrolet Forward Control P12 1999

List of elements for 6.5L VIN Y, A/T Wiring Diagram, without Electronic Engine Controls for Chevrolet Forward Control P12 1999:

• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 5 volts ref
• 5v in
• 5v rtn
• A/t input shaft speed sensor (left side of transmission)
• A/t output shaft speed sensor (left side of transmission)
• A10
• A11
• A12
• Automatic transmission (4l80-e)
• B10
• B11
• B12
• Baro sensor input
• Barometric pressure sensor (top left rear of intake manifold)
• Battery feed
• Brake signal
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (partial) (below dash, near steering column)
• Diagnostic test
• Drl module, drl relay & generator
• Ecm-1 fuse 12 20a
• Ecm-bat fuse 6 20a
• Electronic brake control module
• Engine oil pressure indicator sensor & fuel pump relay
• Engine speed sensor (rear of intake manifold)
• Engine speed signal
• Fuel injection pump shutoff solenoid, & fuel pump relay
• G114 (rear of left cylinder head)
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ign buss
• Ignition
• Input speed sens hi
• Input speed sens lo
• Instrument cluster
• Oss inputs
• Out
• Pcs hi
• Pcs lo
• Pnk
• Pnk n
• Pressure control solenoid
• Range mode selector
• Range signal a
• Range signal b
• Range signal c
• Red
• Red p
• S108
• S111 (engine harn, 10 cm from generator breakout)
• S119 (engine harn, 6 cm from glow plug switch breakout)
• S133
• S143
• S170
• S200 (engine harn, dash side near ignition switch)
• S207
• Sensor ground
• Serial data
• Service trans ind
• Service transmission indicator
• System ground
• Tan
• Tcc pwm control
• Tcc pwm sol
• Throttle position sensor (right side of fuel injection pump)
• Torque converter clutch/ stoplamp switch
• Tp sensor input
• Trans fluid temp sig
• Trans fuse 17 10a
• Transmission control module (left side of driver's island)
• Transmission temperature sensor
• Vehicle spd output
• Vehicle speed input
• Vehicle speed sensor calibrator

7.4L

7.4L VIN J, A/T Wiring Diagram for Chevrolet Forward Control P12 1999

List of elements for 7.4L VIN J, A/T Wiring Diagram for Chevrolet Forward Control P12 1999:

• (4.3l/5.7l: engine harn, 18 cm from left firewall grommet) (7.4l: dash harn, 15 cm from breakout to abs module)
• (4.3l/5.7l: engine harn, 19 cm from breakout to left firewall grommet) (7.4l: engine harn, 25 cm from breakout to wiper motor)
• (4.3l/5.7l: engine harn, 8 cm from breakout to ect sensor) (7.4l: engine harn, 4 cm from breakout to ground g117)
• (mil)
• (rear of left clinder head) g114 g117 (right rear of engine)
• (rear of left clinder head) g114 g119 (on top of thermostat housing)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 4.3l (vin w), 5.7l (vin r)
• 5v reference
• 7.4l (vin j)
• A/c compressor relay, generator, seat belt/ headlamps alarm module
• A/t fluid pressure manual valve position switch
• A/t input speed sensor (left side of transmission)
• A/t iss hi in
• A/t iss lo in
• Anti-lock brakes, cruise control & shift interlock systems
• Automatic transmission (4l80-e)
• Battery in
• Brake switch input
• Data class ii
• Data link connector (partial) (below dash, near steering column)
• Ecm bat fuse 6 20a
• Ecm-1 fuse 12 20a
• Ect sens input
• Electronic brake control module, cruise control module
• Engine controls system
• Engine coolant temperture sensor (top front of engine)
• Fuel injectors (engine controls system)
• Fuel pump relay & switch
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Press ctrl
• Range signal "a"
• Range signal "b"
• Range signal "c"
• Red
• S108 s121
• S118
• S119 (engine harn, near breakout to ect sensor)
• S126
• S133 s116
• S134 s114
• S135
• S138
• S143
• S150
• S170
• S200 s102
• S207 s211
• Sensor ground
• Sensor return
• Service engine soon indicator
• Solenoid
• Tcc pwm
• Tcc pwm sol
• Tcc/ stop lamps switch
• Throttle position sensor (on throttle body)
• Tp sens input
• Trans fluid temp sensor
• Trans fuse 17 10a
• Trans temp sig in
• Vehicle control module (center front of engine compt)
• Vehicle speed sensor (left rear of transmission)
• Vss hi
• Vss lo