ENGINE PERFORMANCE – Chevrolet Forward Control P30 1995 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Except Cutaway (1 of 3) for Chevrolet Forward Control P30 1995

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Except Cutaway (1 of 3) for Chevrolet Forward Control P30 1995:

• 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
• 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)
• 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 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 Except Cutaway (2 of 3) for Chevrolet Forward Control P30 1995

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Except Cutaway (2 of 3) for Chevrolet Forward Control P30 1995:

• (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
• Idle speed actuator control solenoid (no location available)
• 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 Except Cutaway (3 of 3) for Chevrolet Forward Control P30 1995

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, A/T Except Cutaway (3 of 3) for Chevrolet Forward Control P30 1995:

• 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 (1 of 2) for Chevrolet Forward Control P30 1995

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T (1 of 2) for Chevrolet Forward Control P30 1995:

• (engine ground)
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Battery feed
• Data link connector (behind left side of shipping panel)
• Diagnosis test
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Ecm bat fuse 10a
• Ecm-crnk fuse 10a
• Ect signal
• Egr control
• Engine coolant temperature sensor (top front of engine)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• Fuel pump relay ctrl
• Fuel pump signal
• Fuse block
• Ground
• Ho2s ground
• Ho2s signal
• 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 ref high
• Ic ref low
• Ic signal
• Idle air control actuator (top rear of engine)
• Ignition fused
• Inj fuse 7.5a
• Injector 1 ctrl
• Injector 2 ctrl
• Knock sensor signal
• Manifold absolute pressure sensor (top rear of engine)
• Map ground
• Map reference
• Map signal
• Mil
• Powertrain control module (left side of shipping panel)
• Red
• Serial data
• 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 reference
• Tp signal
• Tp/ect ground
• Vss
• Vss signal

4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T (2 of 2) for Chevrolet Forward Control P30 1995

List of elements for 4.3L (VIN Z), Engine Performance Wiring Diagrams, M/T (2 of 2) for Chevrolet Forward Control P30 1995:

• (engine ground)
• Accy
• Alt fuse 20a
• Bulb test
• Distributor (top rear 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
• 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)
• Lock
• Malfunction (service engine soon) indicator
• Nca
• Off
• Pnk
• Pnk b
• Provisions
• Red
• Run
• Start
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer (behind right side of i/p)

5.7L

5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Except Cutaway (1 of 3) for Chevrolet Forward Control P30 1995

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Except Cutaway (1 of 3) for Chevrolet Forward Control P30 1995:

• 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
• 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)
• 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 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 Except Cutaway (2 of 3) for Chevrolet Forward Control P30 1995

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Except Cutaway (2 of 3) for Chevrolet Forward Control P30 1995:

• (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
• Idle speed actuator control solenoid (no location available)
• 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 Except Cutaway (3 of 3) for Chevrolet Forward Control P30 1995

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, A/T Except Cutaway (3 of 3) for Chevrolet Forward Control P30 1995:

• 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, Cutaway Chassis (1 of 3) for Chevrolet Forward Control P30 1995

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, Cutaway Chassis (1 of 3) for Chevrolet Forward Control P30 1995:

• 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

5.7L (VIN K), Engine Performance Wiring Diagrams, Cutaway Chassis (2 of 3) for Chevrolet Forward Control P30 1995

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, Cutaway Chassis (2 of 3) for Chevrolet Forward Control P30 1995:

• (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, Cutaway Chassis (3 of 3) for Chevrolet Forward Control P30 1995

List of elements for 5.7L (VIN K), Engine Performance Wiring Diagrams, Cutaway Chassis (3 of 3) for Chevrolet Forward Control P30 1995:

• 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)

6.5L

6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 2) for Chevrolet Forward Control P30 1995

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (1 of 2) for Chevrolet Forward Control P30 1995:

• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 4 wheel drive low switch
• 4 whl low sw
• 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)
• 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)
• 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 run or start
• 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) (left side of driver's island)
• 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 Chevrolet Forward Control P30 1995

List of elements for 6.5L (VIN F), Engine Performance Wiring Diagrams (2 of 2) for Chevrolet Forward Control P30 1995:

• "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) (left side of driver's island)
• 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 Y), Engine Performance Wiring Diagrams, A/T for Chevrolet Forward Control P30 1995

List of elements for 6.5L (VIN Y), Engine Performance Wiring Diagrams, A/T for Chevrolet Forward Control P30 1995:

• (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 (behind generator)
• 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
• Trans fluid temp sig
• Trans fuse 10a
• Trans input spd hi
• Trans input spd lo
• Trans lamp
• Trans- mission fluid temp (tft) sensor
• 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 Chevrolet Forward Control P30 1995

List of elements for 6.5L (VIN Y), Engine Performance Wiring Diagrams, M/T for Chevrolet Forward Control P30 1995:

• (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 Except Cutaway (1 of 3) for Chevrolet Forward Control P30 1995

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Except Cutaway (1 of 3) for Chevrolet Forward Control P30 1995:

• 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
• 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)
• 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 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 Except Cutaway (2 of 3) for Chevrolet Forward Control P30 1995

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Except Cutaway (2 of 3) for Chevrolet Forward Control P30 1995:

• (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
• Idle speed actuator control solenoid (no location available)
• 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 Except Cutaway (3 of 3) for Chevrolet Forward Control P30 1995

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, A/T Except Cutaway (3 of 3) for Chevrolet Forward Control P30 1995:

• 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, Cutaway Chassis (1 of 3) for Chevrolet Forward Control P30 1995

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, Cutaway Chassis (1 of 3) for Chevrolet Forward Control P30 1995:

• 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, Cutaway Chassis (2 of 3) for Chevrolet Forward Control P30 1995

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, Cutaway Chassis (2 of 3) for Chevrolet Forward Control P30 1995:

• (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, Cutaway Chassis (3 of 3) for Chevrolet Forward Control P30 1995

List of elements for 7.4L (VIN N), Engine Performance Wiring Diagrams, Cutaway Chassis (3 of 3) for Chevrolet Forward Control P30 1995:

• 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)