ENGINE PERFORMANCE – GMC Rally Camper Special G3500 1994 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L60E A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L60E A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• (front of engine, near thermostat)
• 12v battery
• 12v ignition
• 5v return a
• 5v return b
• 5v sensor ref
• A/c on signal in
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Brake sw to pcm
• C308
• C311
• Cruise control system
• Cruise ind reg grd
• Distributor ref hi
• Distributor ref lo
• Dlc
• Dlc serial data
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm b fuse 10a
• Ecm i fuse 10a
• Egr valve solenoid
• Elec fuel pump in
• Engine coolant temp sens
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay drive
• Fuse block
• G117 (rear of engine, near distributor)
• G125
• Hot at all times
• Hot in run, bulb test, or start
• Idle air control unit (right side of throttle body)
• Ignition bypass
• Ignition control (ic)
• Knock sensor in
• Lo side inj a
• Lo side inj b
• Map sensor in
• Mil indicator ctrl
• Oxygen sensor hi
• Oxygen sensor lo
• Pcm to trans temp sensor
• Pcm trans force mtr hi
• Pcm trans force mtr lo
• Pcm trans range a
• Pcm trans range b
• Pcm trans range c
• Pcm trans shift sol a
• Pcm trans shift sol b
• Pnk
• Powertrain control module (under driver's seat)
• Red
• Stepper coil a hi
• Stepper coil a lo
• Stepper coil b hi
• Stepper coil b lo
• System ground
• Tan
• Tcc clutch ctrl
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Throttle position signal
• Trans fuse 15a
• Trans shift 2/3 solenoid
• Vss buffer signal

4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L60E A/T (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L60E A/T (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Auxiliary fuse block
• Brake fuse 20a
• Bulb test
• C11
• C12
• Distributor
• Engine coolant temperature sensor (on intake manifold)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Red
• Run
• Start
• Tachometer test lead
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)

4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L60E A/T (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L60E A/T (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 3-2 shift solenoid
• 4.3l
• All except 4.3l
• Auxiliary fuse block
• B/h conn pin b3
• Data link connector (behind left side of i/p)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (right front of cowl, above blower motor)
• Fuse block
• G125 (front of engine near thermostat)
• Heated oxygen sensor (4.3l only) (in exhaust y-pipe)
• Hot at all times
• Hot in run, bulb test, or start
• Nca
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans fuse 10a
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (on parking brake support bracket)

4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L80E A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L80E A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 4.3l and 5.7l
• 4.3l and 5.7l only
• 5.7l hd
• 5.7l hd only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Cruise control system
• Cruise signal
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm b fuse 10a
• Ecm i fuse 10a
• Ect signal
• Egr control
• Egr electonic vacuum regulator soleniod valve (top right side of engine)
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right front of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G117 (rear of engine, near distributor)
• G125 (front of engine near thermostat)
• Governor control
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control unit (right side of throttle body)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock signal
• Linear egr vacuum regulator solenoid valve (above right rocker cover)
• Map signal
• Mil control
• Nca
• O2s 5.7l & 7.4l h2os 4.3l
• Oxygen sensor (in exhaust manifold)
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (under driver's seat)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Trans fuse 15a
• Transmission input speed sensor (no location)
• Transmission output speed
• Vss signal

4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L80E A/T (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L80E A/T (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Auxiliary fuse block
• Brake fuse 20a
• Bulb test
• C11
• C12
• Distributor
• Engine coolant temperature sensor (on intake manifold)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Red
• Run
• Start
• Tachometer test lead
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)

4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L80E A/T (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, 4L80E A/T (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 7.4l only
• Auxiliary fuse block
• B/h conn pin b3
• Data link connector (behind left side of i/p)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (right front of cowl, above blower motor)
• Fuse block
• G125 (front of engine near thermostat)
• G125 (front of engine, near thermostat)
• Governor control module (left top front of engine)
• Hot at all times
• Hot in run, bulb test, or start
• In-line fuse 10a (top center rear of engine)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Throttle body governor (left side of throttle body)
• Torque converter clutch solenoid
• Trans fuse 10a
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (on parking brake support bracket)

4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 4.3l
• 4.3l only
• 5.7l
• 5.7l only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Cruise control system
• Cruise signal
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm bat fuse 10a
• Ecm crnk fuse 10a
• Ect signal
• Egr control
• Egr electonic vacuum regulator soleniod valve (top right front of engine)
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right side of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G125 (front of engine)
• Governor control
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control actuator (top rear of engine)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Inj fuse 7.5a
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock sensor input
• Knock signal
• Linear egr vacuum regulator solenoid valve (top front of engine)
• Map signal
• Mil control
• O2s 5.7l & 7.4l h2os 4.3l
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (left side of shipping panel)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Transmission input speed sensor (no location)
• Transmission output speed
• Vss signal

4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Commercial Chassis (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Commercial Chassis (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• 4.3l and 7.4l
• 5.7l
• Accy
• Alt fuse 20a
• Bulb test
• Distributor
• Engine coolant temperature sensor (top front of engine)
• Fuse block
• G125 (at generator bracket)
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Knock sensor module (top right side of engine)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Provisions for tachometer
• Red
• Run
• Start
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)
• Trans fuse 10a

4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Commercial Chassis (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Commercial Chassis (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 4.3l
• 5.7l and 7.4l
• Bh conn pin h2
• Data link connector (behind left side of shipping panel)
• Ecm-bat fuse 10a
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender (in fuel tank)
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine near thermostat)
• G402 (left frame rail near fuel tank)
• Heated oxygen sensor (in exhaust manifold)
• Hot at all times
• Nca
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T Commercial Chassis (1 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T Commercial Chassis (1 of 2) for GMC Rally Camper Special G3500 1994:

• 5 volt ref
• A/c signal
• A10
• A11
• A12
• Air conditioning system
• B10
• B11
• B12
• Battery feed
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C250
• C251
• Crank signal
• Crnk fuse 10a
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (behind left side of shipping panel)
• Diagnostic test terminal
• Ecm bat fuse 10a
• Ecm-crnk fuse 10a
• Ect signal
• Egr control
• Engine coolant temperature sensor (top front of engine)
• Fuel pump relay
• Fuel pump signal
• Fuse block
• G125 (front of engine)
• Hot at all times
• Hot in run, bulb test, or start
• Hot in start
• Iac a high
• Iac a low
• Iac b high
• Iac b low
• Ic bypass
• Ic control
• Ic reference high
• Ic reference low
• Idle air control actuator (top rear of engine)
• Ign ecm fused
• Inj fuse 7.5a
• Injector 1 control
• Injector 2 control
• Knock signal
• Malfunction indicator lamp
• Manifold absolute pressure sensor (top rear of engine)
• Map sensor ground
• Map signal
• Oxygen sensor ground
• Oxygen sensor signal
• Powertrain control module (left side of shipping panel)
• Red
• Sensor ground
• Serial data
• System ground
• Tan
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Throttle position sensor (top right side of engine)
• Tp signal
• Vss signal

4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T Commercial Chassis (2 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T Commercial Chassis (2 of 2) for GMC Rally Camper Special G3500 1994:

• (top rear
• 4.3l
• 5.7l
• Accy
• Alt fuse 20a
• Bulb test
• Distributor
• Egr electronic vacuum regulator solenoid valve (top right front of engine)
• Egr solenoid (top right side of engine)
• For tachometer
• Fuel pump and sender (in fuel tank)
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine
• G125 (front of engine)
• G402 (along left frame rail near fuel tank)
• G402 (left frame rail near fuel tank)
• Heated oxygen sensor (in exhaust manifold)
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top of engine near distributor)
• Ignition switch
• Instrument cluster
• Knock sensor (right side of engine)
• Knock sensor module (top right side of engine)
• Lock
• Malfunction (service engine soon) indicator
• Nca
• Of engine)
• Off
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pnk b
• Provisions
• Red
• Run
• Start
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

5.0L

5.0L (VIN H), Engine Performance Wiring Diagrams, 4L60E A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.0L (VIN H), Engine Performance Wiring Diagrams, 4L60E A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• (front of engine, near thermostat)
• 12v battery
• 12v ignition
• 5v return a
• 5v return b
• 5v sensor ref
• A/c on signal in
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Brake sw to pcm
• C308
• C311
• Cruise control system
• Cruise ind reg grd
• Distributor ref hi
• Distributor ref lo
• Dlc
• Dlc serial data
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm b fuse 10a
• Ecm i fuse 10a
• Egr valve solenoid
• Elec fuel pump in
• Engine coolant temp sens
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay drive
• Fuse block
• G117 (rear of engine, near distributor)
• G125
• Hot at all times
• Hot in run, bulb test, or start
• Idle air control unit (right side of throttle body)
• Ignition bypass
• Ignition control (ic)
• Knock sensor in
• Lo side inj a
• Lo side inj b
• Map sensor in
• Mil indicator ctrl
• Oxygen sensor hi
• Oxygen sensor lo
• Pcm to trans temp sensor
• Pcm trans force mtr hi
• Pcm trans force mtr lo
• Pcm trans range a
• Pcm trans range b
• Pcm trans range c
• Pcm trans shift sol a
• Pcm trans shift sol b
• Pnk
• Powertrain control module (under driver's seat)
• Red
• Stepper coil a hi
• Stepper coil a lo
• Stepper coil b hi
• Stepper coil b lo
• System ground
• Tan
• Tcc clutch ctrl
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Throttle position signal
• Trans fuse 15a
• Trans shift 2/3 solenoid
• Vss buffer signal

5.0L (VIN H), Engine Performance Wiring Diagrams, 4L60E A/T (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.0L (VIN H), Engine Performance Wiring Diagrams, 4L60E A/T (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Auxiliary fuse block
• Brake fuse 20a
• Bulb test
• C11
• C12
• Distributor
• Engine coolant temperature sensor (on intake manifold)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Red
• Run
• Start
• Tachometer test lead
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)

5.0L (VIN H), Engine Performance Wiring Diagrams, 4L60E A/T (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.0L (VIN H), Engine Performance Wiring Diagrams, 4L60E A/T (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 3-2 shift solenoid
• 4.3l
• All except 4.3l
• Auxiliary fuse block
• B/h conn pin b3
• Data link connector (behind left side of i/p)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (right front of cowl, above blower motor)
• Fuse block
• G125 (front of engine near thermostat)
• Heated oxygen sensor (4.3l only) (in exhaust y-pipe)
• Hot at all times
• Hot in run, bulb test, or start
• Nca
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans fuse 10a
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (on parking brake support bracket)

5.0L (VIN H), Engine Performance Wiring Diagrams, 4L80E A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.0L (VIN H), Engine Performance Wiring Diagrams, 4L80E A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 4.3l and 5.7l
• 4.3l and 5.7l only
• 5.7l hd
• 5.7l hd only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Cruise control system
• Cruise signal
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm b fuse 10a
• Ecm i fuse 10a
• Ect signal
• Egr control
• Egr electonic vacuum regulator soleniod valve (top right side of engine)
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right front of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G117 (rear of engine, near distributor)
• G125 (front of engine near thermostat)
• Governor control
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control unit (right side of throttle body)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock signal
• Linear egr vacuum regulator solenoid valve (above right rocker cover)
• Map signal
• Mil control
• Nca
• O2s 5.7l & 7.4l h2os 4.3l
• Oxygen sensor (in exhaust manifold)
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (under driver's seat)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Trans fuse 15a
• Transmission input speed sensor (no location)
• Transmission output speed
• Vss signal

5.0L (VIN H), Engine Performance Wiring Diagrams, 4L80E A/T (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.0L (VIN H), Engine Performance Wiring Diagrams, 4L80E A/T (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Auxiliary fuse block
• Brake fuse 20a
• Bulb test
• C11
• C12
• Distributor
• Engine coolant temperature sensor (on intake manifold)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Red
• Run
• Start
• Tachometer test lead
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)

5.0L (VIN H), Engine Performance Wiring Diagrams, 4L80E A/T (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.0L (VIN H), Engine Performance Wiring Diagrams, 4L80E A/T (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 7.4l only
• Auxiliary fuse block
• B/h conn pin b3
• Data link connector (behind left side of i/p)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (right front of cowl, above blower motor)
• Fuse block
• G125 (front of engine near thermostat)
• G125 (front of engine, near thermostat)
• Governor control module (left top front of engine)
• Hot at all times
• Hot in run, bulb test, or start
• In-line fuse 10a (top center rear of engine)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Throttle body governor (left side of throttle body)
• Torque converter clutch solenoid
• Trans fuse 10a
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (on parking brake support bracket)

5.7L

5.7L (VIN K), Engine Performance Wiring Diagrams, 4L60E A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, 4L60E A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• (front of engine, near thermostat)
• 12v battery
• 12v ignition
• 5v return a
• 5v return b
• 5v sensor ref
• A/c on signal in
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Brake sw to pcm
• C308
• C311
• Cruise control system
• Cruise ind reg grd
• Distributor ref hi
• Distributor ref lo
• Dlc
• Dlc serial data
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm b fuse 10a
• Ecm i fuse 10a
• Egr valve solenoid
• Elec fuel pump in
• Engine coolant temp sens
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay drive
• Fuse block
• G117 (rear of engine, near distributor)
• G125
• Hot at all times
• Hot in run, bulb test, or start
• Idle air control unit (right side of throttle body)
• Ignition bypass
• Ignition control (ic)
• Knock sensor in
• Lo side inj a
• Lo side inj b
• Map sensor in
• Mil indicator ctrl
• Oxygen sensor hi
• Oxygen sensor lo
• Pcm to trans temp sensor
• Pcm trans force mtr hi
• Pcm trans force mtr lo
• Pcm trans range a
• Pcm trans range b
• Pcm trans range c
• Pcm trans shift sol a
• Pcm trans shift sol b
• Pnk
• Powertrain control module (under driver's seat)
• Red
• Stepper coil a hi
• Stepper coil a lo
• Stepper coil b hi
• Stepper coil b lo
• System ground
• Tan
• Tcc clutch ctrl
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Throttle position signal
• Trans fuse 15a
• Trans shift 2/3 solenoid
• Vss buffer signal

5.7L (VIN K), Engine Performance Wiring Diagrams, 4L60E A/T (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, 4L60E A/T (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Auxiliary fuse block
• Brake fuse 20a
• Bulb test
• C11
• C12
• Distributor
• Engine coolant temperature sensor (on intake manifold)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Red
• Run
• Start
• Tachometer test lead
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)

5.7L (VIN K), Engine Performance Wiring Diagrams, 4L60E A/T (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, 4L60E A/T (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 3-2 shift solenoid
• 4.3l
• All except 4.3l
• Auxiliary fuse block
• B/h conn pin b3
• Data link connector (behind left side of i/p)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (right front of cowl, above blower motor)
• Fuse block
• G125 (front of engine near thermostat)
• Heated oxygen sensor (4.3l only) (in exhaust y-pipe)
• Hot at all times
• Hot in run, bulb test, or start
• Nca
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans fuse 10a
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (on parking brake support bracket)

5.7L (VIN K), Engine Performance Wiring Diagrams, 4L80E A/T (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, 4L80E A/T (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 4.3l and 5.7l
• 4.3l and 5.7l only
• 5.7l hd
• 5.7l hd only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Cruise control system
• Cruise signal
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm b fuse 10a
• Ecm i fuse 10a
• Ect signal
• Egr control
• Egr electonic vacuum regulator soleniod valve (top right side of engine)
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right front of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G117 (rear of engine, near distributor)
• G125 (front of engine near thermostat)
• Governor control
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control unit (right side of throttle body)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock signal
• Linear egr vacuum regulator solenoid valve (above right rocker cover)
• Map signal
• Mil control
• Nca
• O2s 5.7l & 7.4l h2os 4.3l
• Oxygen sensor (in exhaust manifold)
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (under driver's seat)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Trans fuse 15a
• Transmission input speed sensor (no location)
• Transmission output speed
• Vss signal

5.7L (VIN K), Engine Performance Wiring Diagrams, 4L80E A/T (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, 4L80E A/T (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Auxiliary fuse block
• Brake fuse 20a
• Bulb test
• C11
• C12
• Distributor
• Engine coolant temperature sensor (on intake manifold)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Red
• Run
• Start
• Tachometer test lead
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)

5.7L (VIN K), Engine Performance Wiring Diagrams, 4L80E A/T (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, 4L80E A/T (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 7.4l only
• Auxiliary fuse block
• B/h conn pin b3
• Data link connector (behind left side of i/p)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (right front of cowl, above blower motor)
• Fuse block
• G125 (front of engine near thermostat)
• G125 (front of engine, near thermostat)
• Governor control module (left top front of engine)
• Hot at all times
• Hot in run, bulb test, or start
• In-line fuse 10a (top center rear of engine)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Throttle body governor (left side of throttle body)
• Torque converter clutch solenoid
• Trans fuse 10a
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (on parking brake support bracket)

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 4.3l
• 4.3l only
• 5.7l
• 5.7l only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Cruise control system
• Cruise signal
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm bat fuse 10a
• Ecm crnk fuse 10a
• Ect signal
• Egr control
• Egr electonic vacuum regulator soleniod valve (top right front of engine)
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right side of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G125 (front of engine)
• Governor control
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control actuator (top rear of engine)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Inj fuse 7.5a
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock sensor input
• Knock signal
• Linear egr vacuum regulator solenoid valve (top front of engine)
• Map signal
• Mil control
• O2s 5.7l & 7.4l h2os 4.3l
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (left side of shipping panel)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Transmission input speed sensor (no location)
• Transmission output speed
• Vss signal

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• 4.3l and 7.4l
• 5.7l
• Accy
• Alt fuse 20a
• Bulb test
• Distributor
• Engine coolant temperature sensor (top front of engine)
• Fuse block
• G125 (at generator bracket)
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Knock sensor module (top right side of engine)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Provisions for tachometer
• Red
• Run
• Start
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)
• Trans fuse 10a

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 4.3l
• 5.7l and 7.4l
• Bh conn pin h2
• Data link connector (behind left side of shipping panel)
• Ecm-bat fuse 10a
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender (in fuel tank)
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine near thermostat)
• G402 (left frame rail near fuel tank)
• Heated oxygen sensor (in exhaust manifold)
• Hot at all times
• Nca
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T P/G Cutaway (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T P/G Cutaway (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 5.7l
• 5.7l only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm-i fuse 20a
• Ect signal
• Egr control
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right side of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G102 (right front of engine)
• G125 (at generator bracket)
• G125 (front of engine)
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control actuator (top rear of engine)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock signal
• Linear egr vacuum regulator solenoid valve (top front of engine)
• Map signal
• Mil control
• Nca
• O2s
• Oxygen sensor (in exhaust manifold)
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (left side of shipping panel)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Transmission input speed sensor (left side of transmission)
• Transmission output speed
• Vss signal

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T P/G Cutaway (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T P/G Cutaway (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Bulb test
• Distributor
• Engine coolant temperature sensor (top front of engine)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Provisions for tachometer
• Red
• Run
• Start
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)
• Trans fuse 10a

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T P/G Cutaway (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T P/G Cutaway (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• Bh conn pin h2
• Data link connector (behind left side of shipping panel)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender (in fuel tank)
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (top of cowl)
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine near thermostat)
• G402 (left frame rail near fuel tank)
• Hot at all times
• Nca
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

5.7L (VIN K), Engine Performance Wiring Diagrams, M/T Commercial Chassis (1 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, M/T Commercial Chassis (1 of 2) for GMC Rally Camper Special G3500 1994:

• 5 volt ref
• A/c signal
• A10
• A11
• A12
• Air conditioning system
• B10
• B11
• B12
• Battery feed
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C250
• C251
• Crank signal
• Crnk fuse 10a
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (behind left side of shipping panel)
• Diagnostic test terminal
• Ecm bat fuse 10a
• Ecm-crnk fuse 10a
• Ect signal
• Egr control
• Engine coolant temperature sensor (top front of engine)
• Fuel pump relay
• Fuel pump signal
• Fuse block
• G125 (front of engine)
• Hot at all times
• Hot in run, bulb test, or start
• Hot in start
• Iac a high
• Iac a low
• Iac b high
• Iac b low
• Ic bypass
• Ic control
• Ic reference high
• Ic reference low
• Idle air control actuator (top rear of engine)
• Ign ecm fused
• Inj fuse 7.5a
• Injector 1 control
• Injector 2 control
• Knock signal
• Malfunction indicator lamp
• Manifold absolute pressure sensor (top rear of engine)
• Map sensor ground
• Map signal
• Oxygen sensor ground
• Oxygen sensor signal
• Powertrain control module (left side of shipping panel)
• Red
• Sensor ground
• Serial data
• System ground
• Tan
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Throttle position sensor (top right side of engine)
• Tp signal
• Vss signal

5.7L (VIN K), Engine Performance Wiring Diagrams, M/T Commercial Chassis (2 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, M/T Commercial Chassis (2 of 2) for GMC Rally Camper Special G3500 1994:

• (top rear
• 4.3l
• 5.7l
• Accy
• Alt fuse 20a
• Bulb test
• Distributor
• Egr electronic vacuum regulator solenoid valve (top right front of engine)
• Egr solenoid (top right side of engine)
• For tachometer
• Fuel pump and sender (in fuel tank)
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine
• G125 (front of engine)
• G402 (along left frame rail near fuel tank)
• G402 (left frame rail near fuel tank)
• Heated oxygen sensor (in exhaust manifold)
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top of engine near distributor)
• Ignition switch
• Instrument cluster
• Knock sensor (right side of engine)
• Knock sensor module (top right side of engine)
• Lock
• Malfunction (service engine soon) indicator
• Nca
• Of engine)
• Off
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pnk b
• Provisions
• Red
• Run
• Start
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

6.5L

6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 2) for GMC Rally Camper Special G3500 1994:

• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 5v ref
• A range mode selector
• Accelerator pedal position (app) module (top of accelerator bracket)
• App 1 sens 5v ref
• App 1 sens gnd
• App 1 sensor
• App 2 sens gnd
• App 2 sensor
• App 3 sens 5v ref
• App 3 sens gnd
• App 3 sensor
• App sens 1 sig
• App sens 2 sig
• B/h
• Baro sig
• Battery feed
• Block
• Boost sig
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• Ckp sig
• Closure grd
• Control
• Cruise
• Cruise on/off sig
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (no location available)
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ect sig
• Electronic 4-speed automatic overdrive transmission
• Eng shut-off ctrl
• Engine coolant temperature (ect) sensor (right side of engine)
• Engine ground (no location available)
• Engine shut- off solenoid (top front of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel inj ctrl
• Fuel inj sig
• Fuel solenoid (top front of engine)
• Fuel solenoid driver (top front of engine)
• Fuse
• Fusible link (no location available)
• Glow plug rly ctrl
• Hi resolution sig
• Hot at all times
• Hot in start or run
• Mil
• Optical sens 5v ref
• Optical sens cam sig
• Optical sens gnd
• Optical sensor and fuel temper- ature sensor (top front of engine)
• Pnk
• Powertrain control module (pcm) (no location available)
• Press ctrl sol
• Press ctrl sol lo
• Pressure control sol
• Range signal a
• Range signal b
• Range signal c
• Red
• Resume/accel sig
• Sensor gnd
• Serial data
• Set/coast sig
• System
• System gnd
• Tan
• Tcc brake sw
• Tcc sol
• Tcc sol ctrl (pwm)
• Trans fluid temp (tft) sensor
• Trans fluid temp sig
• Trans fuse 10a
• Trans input spd hi
• Trans input spd lo
• Trans output
• Trans output spd sig
• Transmission input speed sensor
• Vehicle speed sensor (left rear side of transmission)
• Vehicle speed sensor buffer (no location available)
• Vss
• Vss input
• Vss output

6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 2) for GMC Rally Camper Special G3500 1994:

• "service engine soon" lamp
• "service throttle" lamp
• (no location available)
• (on brake
• (upper rear of engine)
• A/c sig
• A10
• A11
• A12
• Air conditioning system
• All times
• Alt fuse 20a
• App 2 sens 5v ref
• App 3 sens sig
• B10
• B11
• B12
• Baro sensor (no location available)
• C red
• Crankshaft position sensor (top front of engine, inside
• Cruise ctrl brake sig
• Diagnostic request
• Ecm-crnk fuse 10a
• Fuel heater (no location available)
• Fuel pump (no location available)
• Fuel pump oil pressure switch
• Fuel pump relay (no location available)
• Fuel temp sig
• Fuse block
• Fusible link
• Fusible links
• Glow plug control relay (right rear top of engine)
• Glow plug sig
• Ground
• Ground (no location available)
• Hot at
• Hot at all times
• Hot in run, bulb test or start
• Hot in start or run
• Iat sig
• Ignition feed
• Injection pump)
• Injection timing stepper (its) motor (top front of engine)
• Instrument cluster
• Instrument clusters system
• Intake air temperature (iat) sensor (at front of engine)
• Its coil 1 hi
• Its coil 1 lo
• Its coil 2 hi
• Its coil 2 lo
• Left bank glow plugs
• Manifold absolute pressure sensor (no location available)
• Pedal
• Pnk
• Powertrain control module (pcm) (no location available)
• Red
• Right bank glow plugs
• Starting/ charging system
• Stop fuse 15a
• Stop lamp/ cruise control brake switch (on brake pedal support)
• Support)
• Switch
• Tan
• Tcc brake
• Wait lamp
• Wastegate sol ctrl
• Wastegate solenoid (left rear top of engine)

6.5L (VIN P), Engine Performance Wiring Diagrams (1 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN P), Engine Performance Wiring Diagrams (1 of 2) for GMC Rally Camper Special G3500 1994:

• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 3-2 shift sol
• 4 wheel drive low switch
• 5v ref
• A range mode selector
• Accelerator pedal position (app) module (top of accelerator bracket)
• Anti-lock brakes system
• App 1 sens 5v ref
• App 1 sens gnd
• App 1 sensor
• App 2 sens gnd
• App 2 sensor
• App 3 sens 5v ref
• App 3 sens gnd
• App 3 sensor
• App sens 1 sig
• App sens 2 sig
• B/h
• Battery feed
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• Ckp sig
• Closure sig
• Cruise control system
• Cruise on/off sig
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (under left side of i/p)
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecmb fuse 10a
• Ect sig
• Egr sol ctrl
• Electronic 4-speed automatic overdrive transmission
• Eng shut-off ctrl
• Engine coolant temperature (ect) sensor (right rear front of engine)
• Engine shut- off solenoid (top front of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fpmp fuse 20a
• Fuel inj ctrl
• Fuel inj sig
• Fuel solenoid (top front of engine)
• Fuel solenoid driver (top front of engine)
• Fuse block
• Fwd low sw
• G117 (top right rear of engine)
• Glow plug rly ctrl
• Hi resolution sig
• Hot at all times
• Hot in start or run
• Mil
• Optical sens 5v ref
• Optical sens cam sig
• Optical sens gnd
• Optical sensor and fuel temper- ature sensor (top front of engine)
• Pnk
• Pnk/wht
• Powertrain control module (pcm) (under right end of i/p)
• Press ctrl sol
• Press ctrl sol (lo)
• Pressure control sol
• Range signal a
• Range signal b
• Range signal c
• Red
• Resume/accel sig
• Sensor gnd
• Serial data
• Set/coast sig
• Speed sensor (left rear side of transmission)
• System gnd
• Tan
• Tcc brake sw
• Tcc sol
• Tcc sol ctrl
• Trans fluid temp (tft) sensor
• Trans fluid temp sig
• Trans fuse 10a
• Trans output
• Trans output spd sig
• Vehicle speed sensor buffer (under right end of i/p)
• Vss
• Vss input
• Vss output

6.5L (VIN P), Engine Performance Wiring Diagrams (2 of 2) for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN P), Engine Performance Wiring Diagrams (2 of 2) for GMC Rally Camper Special G3500 1994:

• "service engine soon" lamp
• "service throttle" lamp
• (rear of right cylinder head)
• (under left side of i/p, near dlc)
• 3-2 shift sol ctrl
• A/c sig
• A10
• A11
• A12
• Air conditioning system
• App 2 sens 5v ref
• App 3 sens sig
• B/h
• B10
• B11
• B12
• Brk fuse 10a
• C203
• Crankshaft position sensor (top front of engine, inside
• Cruise ctrl brake sig
• Diagnostic request
• Ecmi fuse 10a
• Egr solenoid (left rear top of engine)
• Egr vent sol ctrl
• Egr vent solenoid (left rear top of engine)
• Fuel heater (top rear of engine)
• Fuel temp sig
• Fuse block
• Fusible link (12ga-
• Fusible links
• G117
• G206
• Gauges fuse 20a
• Glo plug fuse 5a
• Glow plug control relay (right rear top of engine)
• Glow plug sig
• Hot at all times
• Hot in start or run
• Hot in run
• Hot in run, bulb test or start
• Iat sig
• Ignition feed
• Injection pump)
• Injection timing stepper (its) motor (top front of engine)
• Instrument cluster
• Intake air temperature (iat) sensor (at front of engine)
• Its coil 1 hi
• Its coil 1 lo
• Its coil 2 hi
• Its coil 2 lo
• Left bank glow plugs
• Powertrain control module (pcm) (under right end of i/p)
• Red
• Right bank glow plugs
• Stop-hz fuse 20a
• Tan
• Tcc/ brake switch (on brake pedal support bracket)
• Wait lamp

6.5L (VIN Y), Engine Performance Wiring Diagrams for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN Y), Engine Performance Wiring Diagrams for GMC Rally Camper Special G3500 1994:

• "trans" lamp
• (12 ga-rust)
• (14 ga-rust)
• (18 ga-rust)
• (left side of i/p)
• (lower left front of engine)
• (right side of bulkhead connector)
• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 5 volts ref
• A/c input
• A10
• A11
• A12
• Air condi- tioning system
• Air conditioning system
• B/h
• B10
• B11
• B12
• Battery feed
• Brake signal
• Brake/trans- mission shift interlock relay (on steering column)
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (under left side of i/p)
• Diagnostic test
• Ecm bat fuse 10a
• Ecm i fuse 10a
• Electronic 4-speed automatic overdrive transmission
• Engine speed sensor (top rear of engine)
• Engine speed signal
• Fuse block
• Fusible link
• Fusible link (20 ga-
• Fusible links
• G110
• G202
• Gages fuse 20a
• Glow plug controller (left side of engine)
• Glow plug wait lamp
• Hot at all times
• Hot in crank
• Hot in run bulb test or start
• Hot in start or run
• Ignition
• Ignition switch
• Inputs
• Instrument cluster
• Left bank glow plugs
• Map sens
• Map sensor (center of cowl, in engine compt)
• Pcs hi
• Pcs lo
• Pnk
• Pnk a
• Pnk n
• Pressure control solenoid
• Range mode selector
• Range signal a
• Range signal b
• Range signal c
• Red
• Red p
• Right bank glow plugs
• Rust)
• Sensor ground
• Serial data
• Service trans output
• Starter motor (lower right rear of engine)
• System ground
• Tan
• Tcc control
• Tcc sol
• Tcc/brake switch (on brake pedal support)
• Throttle position sensor (right side of throttle body)
• Tp sensor input
• Tran- smission fluid temp (tft) sensor
• Trans fluid temp sig
• Trans fuse 10a
• Trans input spd hi
• Trans input spd lo
• Transmission control module (tcm) (below driver seat)
• Transmission input speed sensor (left front side of transmission)
• Vehicle spd output vss
• Vehicle speed input
• Vehicle speed sensor (rear of transmission)
• Vehicle speed sensor buffer (under right side of i/p)

6.5L (VIN Y), Engine Performance Wiring Diagrams, A/T for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN Y), Engine Performance Wiring Diagrams, A/T for GMC Rally Camper Special G3500 1994:

• (16 ga-rust)
• (18 ga-rust)
• (at generator bracket)
• (in i/p harness)
• (instrument cluster)
• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 5 volts ref
• A/c input
• A10
• A11
• A12
• Accy
• Air condi- tioning system
• Alt fuse 20a
• B/h
• B10
• B11
• B12
• Battery feed
• Brake signal
• Bulb test
• C pnk
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• Cold advance fast idle temperature switch (right rear of engine)
• Cold advance solenoid (top front of engine)
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (behind left side shipping panel)
• Diagnostic test
• Diode
• Ecm bat fuse 10a
• Ecm crank fuse 10a
• Electronic 4-speed automatic overdrive transmission
• Engine speed sensor (top center of engine)
• Engine speed signal
• Fast idle solenoid (top left side of engine)
• Fuel heater (top rear of engine)
• Fuel shut- off solenoid (top front of engine)
• Fuse block
• Fusible link
• Fusible link (20 ga-
• Fusible links
• G125
• G125 (front of engine)
• Glow plug controller (left side of engine)
• Glow plug wait lamp
• Hot at all times
• Hot in crank
• Hot in run bulb test or start
• Ignition
• Inputs
• Instrument cluster
• Left bank glow plugs
• Lock
• Map sens
• Map sensor (left side of shipping panel)
• Nca
• Off
• Pcs hi
• Pcs lo
• Pnk
• Pnk d
• Pressure control solenoid
• Range mode selector
• Range signal a
• Range signal b
• Range signal c
• Red
• Red f
• Right bank glow plugs
• Run
• Rust)
• Sensor ground
• Serial data
• Service trans output
• Start
• System ground
• Tcc control
• Tcc sol
• Tcc/brake switch (on brake pedal support)
• Throttle position sensor (top center of engine)
• Tp sensor input
• Tran- smission fluid temp (tft) sensor
• Trans fluid temp sig
• Trans fuse 10a
• Trans input spd hi
• Trans input spd lo
• Trans lamp
• Transmission control module (tcm) (behind left side of shipping panel)
• Transmission input speed sensor (left side of transmission)
• Vehicle spd output vss
• Vehicle speed input
• Vehicle speed sensor (rear of transmission)
• Vehicle speed sensor buffer (under right side of i/p)
• Water- in-fuel indicator
• Water-in- fuel sensor (top rear of engine)

6.5L (VIN Y), Engine Performance Wiring Diagrams, M/T for GMC Rally Camper Special G3500 1994

List of elements for 6.5L (VIN Y), Engine Performance Wiring Diagrams, M/T for GMC Rally Camper Special G3500 1994:

• (18 ga-rust)
• (no location available)
• (on starter motor)
• Accy
• Alt fuse 20a
• Bulb test
• Cold advance fast idle temperature switch (right rear of engine)
• Cold advance solenoid (top front of engine)
• Fast idle solenoid (top left side of engine)
• Fuel heater (top rear of engine)
• Fuel shut- off solenoid (top front of engine)
• Fuse block
• Fusible link (12 ga-
• Fusible link (20 ga-
• Fusible links
• G125 (front of engine)
• Glow plug controller (left side of engine)
• Glow plug wait lamp
• Ground (no location available)
• Hot at all times
• Hot in run or start
• Hot in start
• Instrument cluster
• Left bank glow plugs
• Lock
• Nca
• Off
• Pnk
• Red
• Right bank glow plugs
• Run
• Rust)
• Start
• Water- in-fuel indicator
• Water-in fuel sensor (top rear of engine)

7.4L

7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 4.3l
• 4.3l only
• 5.7l
• 5.7l only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Cruise control system
• Cruise signal
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm bat fuse 10a
• Ecm crnk fuse 10a
• Ect signal
• Egr control
• Egr electonic vacuum regulator soleniod valve (top right front of engine)
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right side of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G125 (front of engine)
• Governor control
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control actuator (top rear of engine)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Inj fuse 7.5a
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock sensor input
• Knock signal
• Linear egr vacuum regulator solenoid valve (top front of engine)
• Map signal
• Mil control
• O2s 5.7l & 7.4l h2os 4.3l
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (left side of shipping panel)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Transmission input speed sensor (no location)
• Transmission output speed
• Vss signal

7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• 4.3l and 7.4l
• 5.7l
• Accy
• Alt fuse 20a
• Bulb test
• Distributor
• Engine coolant temperature sensor (top front of engine)
• Fuse block
• G125 (at generator bracket)
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Knock sensor module (top right side of engine)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Provisions for tachometer
• Red
• Run
• Start
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)
• Trans fuse 10a

7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Commercial Chassis and Motorhome (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• 4.3l
• 5.7l and 7.4l
• Bh conn pin h2
• Data link connector (behind left side of shipping panel)
• Ecm-bat fuse 10a
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender (in fuel tank)
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (no location available)
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine near thermostat)
• G402 (left frame rail near fuel tank)
• Heated oxygen sensor (in exhaust manifold)
• Hot at all times
• Nca
• Oxygen sensor (in exhaust manifold)
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

7.4L (VIN N), Engine Performance Wiring Diagrams, A/T P/G Cutaway (1 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T P/G Cutaway (1 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift solenoid control
• 2-3 shift solenoid control
• 5.7l
• 5.7l only
• 7.4l
• 7.4l only
• A/c signal
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air condition- ing system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Brake signal
• C308
• C311
• Canister purge control
• Diagnostic test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm bat fuse 10a
• Ecm-i fuse 20a
• Ect signal
• Egr control
• Egr pintle position signal
• Evaporative canister purge control solenoid (top right side of engine)
• Exhaust gas recirculation valve solenoid (top right side of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine)
• Hot at all times
• Hot in run, bulb test, or start
• Iac "a" high
• Iac "a" low
• Iac "b" high
• Iac "b" low
• Ic bypass
• Ic control
• Ic ref hi
• Ic ref lo
• Idle air control actuator (top rear of engine)
• Idle speed actuator control solenoid (no location available)
• Idle speed actuator ctrl
• Ignition feed
• Injector 1 control
• Injector 2 control
• Input speed signal high
• Input speed signal low
• Knock signal
• Linear egr vacuum regulator solenoid valve (top front of engine)
• Map signal
• Mil control
• Nca
• O2s
• Oxygen sensor (in exhaust manifold)
• Oxygen sensor ground
• Pcs high
• Pcs low
• Pnk
• Powertrain control module (left side of shipping panel)
• Range signal a
• Range signal b
• Range signal c
• Red
• Sensor ground
• Sensor ref
• Serial data
• System ground
• Tan
• Tcc solenoid control
• Tft signal
• Throttle body fuel injector #1 (top of throttle body unit)
• Throttle body fuel injector #2 (top of throttle body unit)
• Tp reference
• Tp sensor signal
• Transmission input speed sensor (left side of transmission)
• Transmission output speed
• Vss signal

7.4L (VIN N), Engine Performance Wiring Diagrams, A/T P/G Cutaway (2 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T P/G Cutaway (2 of 3) for GMC Rally Camper Special G3500 1994:

• (center rear
• Accy
• Bulb test
• Distributor
• Engine coolant temperature sensor (top front of engine)
• Fuse block
• Gages fuse 20a
• Hot at all times
• Hot in run, bulb test, or start
• Ignition coil (top right rear of engine)
• Ignition switch
• Instrument cluster
• Knock sensor (left rear of engine, near oil pressure sender)
• Lock
• Malfunction (service engine soon) indicator
• Manifold absolute pressure sensor (above valve cover)
• Nca
• Of engine)
• Off
• Pnk
• Pnk b
• Pnk/
• Provisions for tachometer
• Red
• Run
• Start
• Tcc/brake switch (on brake pedal support bracket)
• Throttle position sensor (on throttle body)
• Trans fuse 10a

7.4L (VIN N), Engine Performance Wiring Diagrams, A/T P/G Cutaway (3 of 3) for GMC Rally Camper Special G3500 1994

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T P/G Cutaway (3 of 3) for GMC Rally Camper Special G3500 1994:

• 1-2 shift soleniod
• 2-3 shift soleniod
• Bh conn pin h2
• Data link connector (behind left side of shipping panel)
• Electronic 4-speed automatic overdrive transmission
• Fuel pump and sender (in fuel tank)
• Fuel pump fuse 20a
• Fuel pump oil pressure switch (top rear of engine)
• Fuel pump prime connector (top of cowl)
• Fuel pump relay (lower left side of shipping panel)
• Fuse block
• G125 (at generator bracket)
• G125 (front of engine near thermostat)
• G402 (left frame rail near fuel tank)
• Hot at all times
• Nca
• Pnk
• Pressure control solenoid
• Range mode selector
• Red
• Torque converter clutch solenoid
• Trans- mission temp sensor
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)