ENGINE PERFORMANCE – Chevrolet Chevy Express H1500 2007 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L VIN X

4.3L VIN X, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express H1500 2007:

• (lower front of engine near crankshaft) crankshaft position (ckp) sensor
• (under left side of dash) data link connector
• +5v
• 12 ref
• 3-2 ss ctrl
• A10
• Brk sw sig
• C10
• Central sequential fuel injection (at top of engine)
• Ckp 1 sig
• Cls 2 data
• Cmp sig
• D10
• E10
• Ect sig
• Eng 1 fuse 23 15a
• Eng 2 fuse 21 10a
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign
• Ign 0 fuse 6 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Ks 1 signal
• O2a fuse 15a
• O2b fuse 15a
• Pcm batt fuse 2 20a
• Pnk
• Powertrain control module (in engine compt, on left inner fender)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Ref low
• Rly ctrl
• S101
• Sp200 (in dash wiring harn, 10cm from underhood pass- through grommet breakout)
• Starting/ charging system
• Tan
• Underhood fuse block (left side of engine compartment)

4.3L VIN X, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express H1500 2007:

• (cargo/passenger: in chassis harn, 44 cm from ebcm connector breakout) s301
• (cutaway: in chassis harn, 87 cm from ebcm connector breakout)
• (not used)
• Cargo/ passenger
• Cutaway
• Engine coolant temperature sensor (on left side of engine)
• Fuel pump & sender assembly (in fuel tank)
• Fuel pump fuse 12 20a
• Fuel pump relay
• G102 (left rear of engine)
• G400 (on inner left rear frame rail)
• Heated oxygen sensor (bank 1 sensor 1) (in exh pipe, front of cat converter)
• Heated oxygen sensor (bank 1 sensor 2) (in exh pipe, rear of cat converter)
• Heated oxygen sensor (bank 2 sensor 1) (in exh pipe, front of cat converter)
• Heated oxygen sensor (bank 2 sensor 2) (in exh pipe, rear of cat converter)
• Hot at all times
• Knock sensor (on top left rear of (engine)
• Nca
• Park/neutral position switch (left side of transmission)
• Pnk
• S102
• Tan
• Throttle position sensor (on left side of throttle body)
• Under- hood fuse block (on left side of engine compt)

4.3L VIN X, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express H1500 2007:

• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transmission
• C12
• Camshaft position sensor (part of distributor, top rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emission (evap) canister purge solenoid (on top of engine, near throttle body)
• Fuel tank pressure sensor (on fuel tank)
• Hot in run & start
• Ign e fuse 22 10a
• M tan
• Manifold absolute pressure sensor (on top right side of engine)
• N pnk
• Pc sol valve
• Pnk
• Pnk a
• Red
• Rev
• Stop- lamp switch (above brake pedal)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block
• Underhood fuse block (left side of engine compt)

4.3L VIN X, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express H1500 2007:

• Can vent fuse 34 10a
• Evaporative emissions canister vent solenoid (on evap canister, near front of fuel tank)
• G103 (right rear of engine)
• Gnd
• Hot at all times
• Iat sensor
• Ign
• Intake air temperature (iat)/ mass airflow (maf) sensor (integral with mass airflow sensor)
• Pnk
• Pnk tan
• S101
• Signal
• Tan
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (on right side of transmission)

4.3L VIN X, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express H1500 2007:

• 1-2 ss ctrl
• 12 ref
• 2-3 ss ctrl
• A/c low press
• A/c request
• A/c system (w/ front manual controls)
• Anti-lock brakes system
• B10
• Clu rly ctrl
• Cntrl
• Crank fuse 27 10a
• Crank volt
• Cruise control system
• Cruise engaged
• Cruise inhibit
• Distributor
• Eng 1 fuse 23 15a
• Evap canp ctrl
• Evap vent ctrl
• Front high sig
• Front low sig
• Fuel lev sig
• Fuel press sig
• G102 (left rear of engine)
• G103 (right rear of engine)
• Gen cycle sig
• Gen ind
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot in run & start
• Hot in start
• Iac coil a hi
• Iac coil a low
• Iac coil b hi
• Iac coil b low
• Iat sig
• Ic timing cntrl
• Idle air control valve (on left side of throttle body)
• Ign 1
• Ign coil
• Ignition coil (top right side of engine)
• Ignition control module (top right side of engine)
• Instrument panel cluster
• Logic
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm ign 1 fuse 38 15a
• Pmp rly ctrl
• Pnk
• Pnk a
• Powertrain control module (in engine compt, on left inner fender)
• Press sens sig
• Prnd c sig
• Ref low
• S101
• Starting/ charging system
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Tp sens sig
• Underhood fuse block (left side of engine compt
• Vss

5.3L VIN T

5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express H1500 2007:

• (5.3l)
• (lower right rear of engine) crankshaft position (ckp) sensor
• (under left side of dash) data link connector
• 12v ref
• 3-2 ss ctrl
• 5v ref 1
• 5v ref 2
• A w/ active brake control
• A10
• Abs system
• C10
• Ckp sig
• Class 2 data
• Cmp sig
• D10
• E10
• Ect sig
• Eng 1 fuse 23 15a
• Eng 2 fuse 21 15a
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign 0 fuse 10a
• Ign 0 volt
• Ign 1 volt
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Injectors
• Ks 1 signal
• Ks 2 sig
• Low ref
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcm batt fuse 2 20a
• Pnk
• Pnk a
• Powertrain control module (in engine compt, on left inner fender)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Req torq sig
• S101
• Sp200 (in dash wiring harn, 10cm from underhood pass- through grommet breakout)
• Start rly ctrl
• Starting/ charging system
• Stp lp sw sig
• Tan
• Tan b
• Uart ser data
• Underhood fuse block (left side of engine compartment)

5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express H1500 2007:

• (cargo/passenger: in chassis harn, 44 cm from ebcm connector breakout) s301
• (cutaway: in chassis harn, 87 cm from ebcm connector breakout)
• (not used)
• 5.3l w/ ca emissons
• Engine coolant temperature sensor (at left front of engine)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (on fuel tank)
• Fuel pump fuse 12 20a
• Fuel pump relay
• G102 (left rear of engine)
• G103 (right rear of engine)
• G400 (on inner left rear frame rail)
• Gas pass/cargo heavy duty (w/o hd truck trailer wiring)
• Heated oxygen sensor (bank 1 sensor 1) (in exh pipe, front of cat converter)
• Heated oxygen sensor (bank 1 sensor 2) (in exh pipe, back of cat converter)
• Heated oxygen sensor (bank 2 sensor 1) (in exh pipe, front of cat converter)
• Heated oxygen sensor (bank 2 sensor 2) (in exh pipe, back of cat converter)
• Hot at all times
• Knock sensor 1 (below front of intake manifold)
• Knock sensor 2 (below rear of intake manifold)
• Nca
• Other
• Park/neutral position switch (left side of transmission)
• Pnk
• S101
• S102
• Tan
• Under- hood fuse block (left side of engine compt)

5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express H1500 2007:

• (4l60e)
• (4l60e) s
• 1-2 sol
• 2-3 sol
• 3-2 sol
• 5v ref
• A red
• A/t fluid pressure manual valve position switch
• Accelerator pedal position sensor (under left side of dash)
• Apps 1 sig
• Apps 2 sig
• Automatic transaxle
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emission (evap) canister purge solenoid (on top of engine, near throttle body)
• Fuel tank pressure sensor (on fuel tank)
• Hot in run & start
• Ign e fuse 22 10a
• Low ref
• M tan
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• Pc sol valve
• Pnk
• Pnk a
• Red
• Rev
• Sensor 1
• Sensor 2
• Stop- lamp switch (above brake pedal)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Throttle actuator control module (at left rear of engine compt)
• Underhood fuse block
• Underhood fuse block (left side of engine compartment)

5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express H1500 2007:

• (at left rear of engine compt) throttle actuator control module
• (on left side of transmission) (4l80e) automatic transmission input shaft speed sensor
• 5v ref
• Can vent fuse 34 10a
• Chmsl vlt
• Cruise control system
• Cruise on sw
• Evaporative emissions canister vent solenoid (on evap canister, near front of fuel tank)
• G102 (on left rear of engine)
• G103 (right rear of engine)
• Gnd
• Ground
• Hot at all times
• Iat sensor
• Ign
• Ign 1 vlt
• Intake air temperature (iat)/ mass airflow (maf) sensor (integral with mass airflow sensor)
• Low ref
• Pnk
• Res/accel
• S101
• S102
• Set/coast
• Signal
• Tac mtr cntl
• Tac mtr cntl 1
• Tan
• Throttle body
• Throttle position sensor 1
• Throttle position sensor 2
• Tps 1 sig
• Tps 2 sig
• Uart ser data
• Underhood fuse block (left side of engine compartment)
• Vehicle speed sensor (4l60-e: on right side of transmission) (4l80-e: on left side of transmission)

5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express H1500 2007:

• (5.3l)
• (in even ignition/coil module jumper harn, on top right side of engine)
• (in odd ignition/coil module jumper harn, on top left side of engine)
• (left rear of engine) g102
• 1-2 ss ctrl
• 12v ref
• 2-3 ss ctrl
• A/c low press
• A/c request
• A/c system (w/ front manual controls)
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• B10
• Clut rly ctrl
• Crank fuse 27 10a
• Crank volt
• Ctrl
• Del torq sig
• Evap canp ctrl
• Evap vent ctrl
• Front high sig
• Front low sig
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine)
• Gen cycle sig
• Gen turn on
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot in run & start
• Hot in start
• Iat sig
• Ic 1 ctrl
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 ctrl
• Ic 5 ctrl
• Ic 6 ctrl
• Ic 7 ctrl
• Ic 8 ctrl
• Ign
• Ignition coils
• Instrument panel cluster
• Logic
• Low ref
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm ign 1 fuse 38 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (in engine compt, on left inner fender)
• Press sens sig
• Press sw sig a
• Prnd c sig
• Red c
• Ref lo
• S101
• S183
• S184
• S185
• S187
• S188
• Spark plug
• Starting/ charging system
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Underhood fuse block (left side of engine compartment)
• Vss
• W/ active brake control

5.3L VIN Z

5.3L VIN Z, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express H1500 2007:

• (5.3l)
• (lower right rear of engine) crankshaft position (ckp) sensor
• (under left side of dash) data link connector
• 12v ref
• 3-2 ss ctrl
• 5v ref 1
• 5v ref 2
• A w/ active brake control
• A10
• Abs system
• C10
• Ckp sig
• Class 2 data
• Cmp sig
• D10
• E10
• Ect sig
• Eng 1 fuse 23 15a
• Eng 2 fuse 21 15a
• G103 (right rear of engine)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• Ign 0 fuse 10a
• Ign 0 volt
• Ign 1 volt
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Injectors
• Ks 1 signal
• Ks 2 sig
• Low ref
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcm batt fuse 2 20a
• Pnk
• Pnk a
• Powertrain control module (in engine compt, on left inner fender)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Req torq sig
• S101
• Sp200 (in dash wiring harn, 10cm from underhood pass- through grommet breakout)
• Start rly ctrl
• Starting/ charging system
• Stp lp sw sig
• Tan
• Tan b
• Uart ser data
• Underhood fuse block (left side of engine compartment)

5.3L VIN Z, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express H1500 2007:

• (cargo/passenger: in chassis harn, 44 cm from ebcm connector breakout) s301
• (cutaway: in chassis harn, 87 cm from ebcm connector breakout)
• (not used)
• 5.3l w/ ca emissons
• Engine coolant temperature sensor (at left front of engine)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (on fuel tank)
• Fuel pump fuse 12 20a
• Fuel pump relay
• G102 (left rear of engine)
• G103 (right rear of engine)
• G400 (on inner left rear frame rail)
• Gas pass/cargo heavy duty (w/o hd truck trailer wiring)
• Heated oxygen sensor (bank 1 sensor 1) (in exh pipe, front of cat converter)
• Heated oxygen sensor (bank 1 sensor 2) (in exh pipe, back of cat converter)
• Heated oxygen sensor (bank 2 sensor 1) (in exh pipe, front of cat converter)
• Heated oxygen sensor (bank 2 sensor 2) (in exh pipe, back of cat converter)
• Hot at all times
• Knock sensor 1 (below front of intake manifold)
• Knock sensor 2 (below rear of intake manifold)
• Nca
• Other
• Park/neutral position switch (left side of transmission)
• Pnk
• S101
• S102
• Tan
• Under- hood fuse block (left side of engine compt)

5.3L VIN Z, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express H1500 2007:

• (4l60e)
• (4l60e) s
• 1-2 sol
• 2-3 sol
• 3-2 sol
• 5v ref
• A red
• A/t fluid pressure manual valve position switch
• Accelerator pedal position sensor (under left side of dash)
• Apps 1 sig
• Apps 2 sig
• Automatic transaxle
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emission (evap) canister purge solenoid (on top of engine, near throttle body)
• Fuel tank pressure sensor (on fuel tank)
• Hot in run & start
• Ign e fuse 22 10a
• Low ref
• M tan
• Manifold absolute pressure sensor (top rear of engine)
• N pnk
• Pc sol valve
• Pnk
• Pnk a
• Red
• Rev
• Sensor 1
• Sensor 2
• Stop- lamp switch (above brake pedal)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Throttle actuator control module (at left rear of engine compt)
• Underhood fuse block
• Underhood fuse block (left side of engine compartment)

5.3L VIN Z, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express H1500 2007:

• (at left rear of engine compt) throttle actuator control module
• (on left side of transmission) (4l80e) automatic transmission input shaft speed sensor
• 5v ref
• Can vent fuse 34 10a
• Chmsl vlt
• Cruise control system
• Cruise on sw
• Evaporative emissions canister vent solenoid (on evap canister, near front of fuel tank)
• G102 (on left rear of engine)
• G103 (right rear of engine)
• Gnd
• Ground
• Hot at all times
• Iat sensor
• Ign
• Ign 1 vlt
• Intake air temperature (iat)/ mass airflow (maf) sensor (integral with mass airflow sensor)
• Low ref
• Pnk
• Res/accel
• S101
• S102
• Set/coast
• Signal
• Tac mtr cntl
• Tac mtr cntl 1
• Tan
• Throttle body
• Throttle position sensor 1
• Throttle position sensor 2
• Tps 1 sig
• Tps 2 sig
• Uart ser data
• Underhood fuse block (left side of engine compartment)
• Vehicle speed sensor (4l60-e: on right side of transmission) (4l80-e: on left side of transmission)

5.3L VIN Z, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express H1500 2007

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express H1500 2007:

• (5.3l)
• (in even ignition/coil module jumper harn, on top right side of engine)
• (in odd ignition/coil module jumper harn, on top left side of engine)
• (left rear of engine) g102
• 1-2 ss ctrl
• 12v ref
• 2-3 ss ctrl
• A/c low press
• A/c request
• A/c system (w/ front manual controls)
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• B10
• Clut rly ctrl
• Crank fuse 27 10a
• Crank volt
• Ctrl
• Del torq sig
• Evap canp ctrl
• Evap vent ctrl
• Front high sig
• Front low sig
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine)
• Gen cycle sig
• Gen turn on
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot in run & start
• Hot in start
• Iat sig
• Ic 1 ctrl
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 ctrl
• Ic 5 ctrl
• Ic 6 ctrl
• Ic 7 ctrl
• Ic 8 ctrl
• Ign
• Ignition coils
• Instrument panel cluster
• Logic
• Low ref
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm ign 1 fuse 38 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (in engine compt, on left inner fender)
• Press sens sig
• Press sw sig a
• Prnd c sig
• Red c
• Ref lo
• S101
• S183
• S184
• S185
• S187
• S188
• Spark plug
• Starting/ charging system
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Underhood fuse block (left side of engine compartment)
• Vss
• W/ active brake control