ENGINE PERFORMANCE – Chevrolet Chevy Express G2500 2008 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L VIN X

4.3L VIN X, Engine Performance Wiring Diagram (1 of 3) for Chevrolet Chevy Express G2500 2008

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 3) for Chevrolet Chevy Express G2500 2008:

• (cutaway: in chassis harness, 87 cm from ebcm connector breakout) (passenger/cargo: in chassis harness, 44 cm from ebcm connector breakout)
• (in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 2
• (in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 2
• (on inner left rear frame rail) g400
• 5v ref 2
• A/c refrigerant pressure sensor
• Acc wak ser data
• Accelerator pedal position (app) sensor (under left side of dash)
• Air conditioning system
• Anti-lock brakes system
• App sens 2 sig
• App sensor 1 sig
• Batt pos volt
• Clutch rly ctrl
• Computer data lines system
• Ecm batt fuse 54 10a
• Ecm ign fuse 48 15a
• Engine control module (ecm) (left side of engine compt)
• Fuel lvl sens sig
• Fuel pump & sender assembly (on fuel tank)
• Fuel tank pressure (ftp) sensor (except 57 gal fuel tank: on fuel tank) (57 gal fuel tank: at fuel tank)
• Gmlan ser data+
• Gmlan ser data-
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s lo sig
• Hot at all times
• Hot w/ run/ crnk relay 69 energized
• Ign
• Ign volt
• Instrument panel cluster (ipc)
• J301
• Logic
• Low ref
• Maf sens sig
• Malfunction indicator lamp
• Mil ctrl
• Nca
• Pnk
• Pnk pnk
• Power distribution system
• Press sens sig
• Pressure ind low engine oil
• Pump rly ctrl
• Pwrtrn rly ctrl
• Rly ctrl
• Starting/charging system
• Tan
• Tan a
• Tan c
• Tos signal
• Transmissions system
• Underhood fuse block (on left side of engine compt)
• Vss signal

4.3L VIN X, Engine Performance Wiring Diagram (2 of 3) for Chevrolet Chevy Express G2500 2008

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 3) for Chevrolet Chevy Express G2500 2008:

• (on top of engine, near throttle body) evaporative emission (evap) canister purge solenoid
• 5v ref 1
• Actuator sig
• Cnstr vent sol fuse 17 10a
• Ecm pwr/trn fuse 50 10a
• Engine control module (ecm) (left side of engine compt)
• Engine oil pressure (eop) sensor (on top rear of engine)
• Evap sol ctrl
• Evaporative emission (evap) canister vent solenoid valve (near front of fuel tank)
• Exterior lights system
• Fuel pump fuse 2 20a
• Fuel pump relay
• G102 (on left rear of engine)
• G103 (on right rear of engine)
• Hot at all times
• Iat sens sig
• Ign volt
• J101
• J102
• Maf/ cnstr vent fuse 49 15a
• Manifold absolute pressure (map) sensor (at top rear of engine, on intake manifold)
• Mass air flow (maf)/intake air temperature (iat) sensor (attached to air intake duct)
• O2 snsr 1 fuse 46 10a
• O2 snsr 2 fuse 56 10a
• Odd ign/inj fuse 55 20a
• Pnk
• Pnk pnk
• Pwr/trn relay 76
• Tan
• Tcc brake sig
• Transmissions system
• Underhood fuse block (on left side of engine compt)
• V6 fuel inj fuse 59 15a

4.3L VIN X, Engine Performance Wiring Diagram (3 of 3) for Chevrolet Chevy Express G2500 2008

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 3) for Chevrolet Chevy Express G2500 2008:

• (at top of engine) central sequential fuel injection (central sfi)
• (inside intake manifold) fuel injectors
• 5v ref 1
• 5v ref 2
• Camshaft position (cmp) sensor (part of distributor, top rear of engine)
• Ckp sens sig
• Cmp sens sig
• Crankshaft position (ckp) sensor (on lower front of engine, near crankshaft)
• Ect sens sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (on left side of engine)
• Evap sol ctrl
• G103 (on right rear of engine)
• Gen field sig
• Gen on sig
• Gnd
• Gnd e
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (in exhaust pipe, in front of catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (in exhaust pipe, in front of catalytic converter)
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s lo sig
• Ic 1 ctrl
• Ic 2 ctrl
• Ic 3 ctrl
• Ic1 ctrl b
• Ic3 ctrl c
• Ign volt f
• Ignition control module (icm) (on top right side of engine, ic2 ctrl at ignition coil)
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• J101
• J102
• J120
• Knock sensor (ks) 1 (left side of engine block, near motor mount)
• Knock sensor (ks) 2 (right side of engine block, near motor mount)
• Ks 1 sig
• Ks 2 sig
• Low ref
• Low ref d
• Map sens sig
• Nca
• Pnk
• Pnk d
• Red
• Sens sig
• Starting/charging system
• Tac mtr 1
• Tan
• Tan a
• Throttle position (tp) sensor (at throttle position (tp) sensor)
• Tp sens 1
• Tp sens 2

5.3L VIN 4

5.3L VIN 4, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express G2500 2008

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Chevy Express G2500 2008:

• (cutaway: in chassis harness, 87 cm from ebcm connector breakout) (passenger/cargo: in chassis harness, 44 cm from ebcm connector breakout)
• (in engine harness, 16 cm from underhood fuse block x1 breakout) j123
• (in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 2
• (in exhaust pipe, in back of catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 2
• (or pnk)
• 4.8l/6.0l
• 5.3l
• 5v ref 1
• 5v ref 2
• A/c refrigerant pressure sensor
• Acc ser data
• Accelerator pedal position (app) sensor (under left side of dash)
• Actuator sig
• Anti-lock brakes system
• App sens 1 sig
• App sens 2 sig
• Batt pos volt
• Brk sw fuse 32 10a
• Computer data lines system
• Ecm batt fuse 54 10a
• Ecm ign fuse 48 15a
• Engine control module (ecm) (left side of engine compt)
• Fuel level sens
• Fuel pump & sender assembly (on fuel tank)
• Fuel tank pressure (ftp) sensor (except 57 gal fuel tank: on fuel tank) (57 gal fuel tank: at fuel tank)
• G103 (on right rear of engine)
• Gmlan data+
• Gmlan data-
• Ho2s hi sig
• Ho2s lo sig
• Hot at all times
• Hot w/ run/ crnk relay 69 energized
• Iat sens sig
• Ign volt
• J101
• J301
• Low ref
• Maf sens sig
• Mass air flow (maf)/intake air temperature (iat) sensor (attached to air intake duct)
• Nca
• Pnk
• Power distribution system
• Press sens sig
• Pwrtrn rly ctrl
• Relay ctrl
• Start rly ctrl
• Starting/charging system
• Stop lamp switch (behind left side of dash, above brake pedal)
• Tan
• Tan c
• Tcc brake sig
• Transmissions system
• Underhood fuse block (on left side of engine compt)
• Vss

5.3L VIN 4, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express G2500 2008

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Chevy Express G2500 2008:

• (on left rear of engine) g102
• (on right rear of engine) g103
• (or pnk)
• 4.8l/6.0l
• 5.3l
• Clutch rly ctrl
• Cnstr vent sol fuse 17 10a
• Computer data lines system
• Ecm pwr/trn fuse 50 10a
• Engine control module (ecm) (left side of engine compt)
• Evap sol ctrl
• Evaporative emission (evap) canister vent solenoid (near front of fuel tank)
• Even ign/ inj fuse 52 20a
• Fuel pump relay 72 (4.8l/6.0l)
• Fuel/pump fuse 2 20a
• G400 (on inner left rear frame rail)
• Gnd
• Ho2s hi sig
• Ho2s lo ctrl
• Hot at all times
• 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
• Instrument panel cluster (ipc)
• J101
• J102
• Logic
• Low engine oil pressure ind
• Low ref
• Maf/ cnstr vent fuse 49 15a
• Malfunction indicator lamp
• Mil ctrl
• O2 snsr 1 fuse 46 10a
• O2 snsr 2 fuse 56 10a
• Odd ign/inj fuse 55 20a
• Pnk
• Pwr/trn relay 76
• Red
• Tos sig
• Transmissions system air conditioning system
• Underhood fuse block (on left side of engine compt)

5.3L VIN 4, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express G2500 2008

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Chevy Express G2500 2008:

• (at rear of vehicle, attached to left rear frame rail) (5.3l) fuel pump flow control module
• (at top left of engine)
• (in odd ignition/coil module jumper harness, on top left side of engine)
• 5v ref
• Bare
• Computer data lines system
• Fcsm ign fuse 11 10a
• Fscm batt fuse 15 20a
• G102 (on left rear of engine)
• G300 (on left frame rail, near ebcm)
• Gmlan data
• Gnd
• Hot at all times
• Hot w/ run/ crnk relay 69 energized
• Ign volt
• Ignition coil/module 1
• Ignition coil/module 3
• Ignition coil/module 5
• Ignition coil/module 7
• J182
• J184
• J315
• Low ref
• Nca
• Pnk
• Pnk d
• Pnk pnk pnk pnk pnk pnk pnk pnk pnk
• Power distribution system
• Pump ctrl
• Red c
• Relay ctrl
• Sens sig
• Serial data
• Spark plug
• Tan
• Underhood fuse block (on left side of engine compt)

5.3L VIN 4, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express G2500 2008

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Chevy Express G2500 2008:

• (at top right of engine)
• (in even ignition/coil module jumper harness, on top right side of engine) j185
• (on left side of intake manifold)
• (on right side of intake manifold)
• Engine oil pressure (eop) sensor (on top rear of engine)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Fuel rail pressure (fpr) sensor
• G102 (on left rear of engine)
• Ignition coil/module 2
• Ignition coil/module 4
• Ignition coil/module 6
• Ignition coil/module 8
• J183
• J188
• Manifold absolute pressure (map) sensor (at top rear of engine, on intake manifold)
• Nca
• Pnk
• Pnk d
• Pnk pnk pnk pnk pnk pnk pnk pnk pnk
• Red c
• Spark plug
• Tan

5.3L VIN 4, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express G2500 2008

List of elements for 5.3L VIN 4, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Chevy Express G2500 2008:

• (6.0l) camshaft position (cmp) actuator solenoid valve
• (below front of intake manifold) knock sensor (ks) 1
• (below rear of intake manifold) knock sensor (ks) 2
• (on top of engine, near throttle body) evaporative emission (evap) canister purge solenoid
• 5v ref 1
• 5v ref 2
• Camshaft position (cmp) sensor (front of engine, between water pump & crank pulley)
• Cen field sig
• Ckp sens sig
• Cmp sens sig
• Crankshaft position (ckp) sensor (on lower right rear of engine, near starter motor)
• Ect sens sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (at left front of engine)
• G103 (on right rear of engine)
• Gen on sig
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (in exhaust pipe, in front of catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (in exhaust pipe, in front of catalytic converter)
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s lo sig
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Intake sol
• J101
• Ks 1 sig
• Ks 2 sig
• Low ref
• Map sens sig
• Oil sw sig
• Pnk
• Pnk d
• Pre sens sig
• Sol ctrl
• Starting/ charging system
• Starting/charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• Tan a
• Throttle body
• Tp sens 1 sig
• Tp sens 2 sig