ENGINE PERFORMANCE – Hummer H3T 2009 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.7L VIN E

3.7L VIN E, Engine Performance Wiring Diagram (1 of 5) for Hummer H3T 2009

List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (1 of 5) for Hummer H3T 2009:

• (above brake pedal assembly) stop lamp switch
• (behind right front kick panel) body control module (bcm)
• (in body harness, approximately 14 cm (5.5 in) to right of stop lamp switch breakout in main harness)
• (in chassis harness, approximately 22.5 cm (8.9 in) from fuel pump & sender assembly connector)
• 4wd low signal
• 5 volt ref
• 5v ref 1
• 5v ref 2
• A/c compressor clutch rly ctrl
• Abs/ vses fuse 29 10a
• Acc
• Accy volt
• Air conditioning system
• Air solenoid relay control
• Anti-theft system
• App sensor 1 signal
• App sensor 2 signal
• Batt pos volt
• Battery positive voltage
• Class 2 serial data
• Cnstr vent fuse 31 10a
• Computer data lines system
• Cruise control release signal
• Cruise control switch signal
• Cruise control system
• Engine control module (ecm) (right rear corner of engine compt)
• Evap canister vent sol ctrl
• Fscm fuse 20a
• Fuel level sensor signal
• Fuel pressure sensor
• Fuel pump
• Fuel pump & sender assembly (mounted on top of fuel tank)
• Fuel pump crtl
• Fuel pump flow control module
• Fuel pump relay control
• Fuel sys ctrl
• Fuel tank pressure sensor signal
• G420 (mounted to left side of rear cross member, near x420)
• Gnd
• Hi spd gmlan
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign 1 volt
• Ign volt
• Ignition switch
• Ignition voltage
• J201
• J207
• J215
• J359
• Lo ref
• Low ref
• Low reference
• Mil control
• Mod shld
• Nca
• Off
• Pnk
• Powertrain relay control
• Press sens sig
• Run
• Ser data bus+
• Ser data bus-
• Sound systems
• Sply volt
• Start
• Starter enable relay control
• Starting/ charging system
• Stop fuse 54 15a
• Stop lamp control
• Tan
• Transmissions system
• Underhood fuse block (above left front wheelwell)
• Vehicle speed signal

3.7L VIN E, Engine Performance Wiring Diagram (2 of 5) for Hummer H3T 2009

List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (2 of 5) for Hummer H3T 2009:

• (on lower left side of engine block, forward of g102) g103
• Accelerator pedal position (app) sensor (on accelerator pedal bracket)
• Air pump fuse 62 60a
• Air sol fuse 44 15a
• Air sol relay
• Clstr fuse 10a
• Computer data lines system
• Engine oil ind
• Etc fuse 15a
• Evaporative emission (evap) canister vent solenoid valve (above spare tire)
• Fuel tank pressure (ftp) sensor (top of fuel pump & sender assembly)
• G103 (on lower left side of engine block, forward of g102)
• Hot at all times
• Instrument panel cluster (ipc)
• Logic
• Mil ind
• Nca
• O2 snsr fuse 47 15a
• Pcm-b fuse 25 10a
• Pnk
• Pwr/trn relay 81
• Red
• Secondary air injection (air) pump (w/ electric air injection reactor) (mounted to right front side of radiator support)
• Secondary air injection (air) pump relay (top of engine, at rear of intake)
• Secondary air injection (air) pump solenoid (w/ electric air injection reactor) (right side of engine, above exhaust)
• Serial data
• Tan
• Underhood fuse block (above left front wheelwell)
• Up shift ind

3.7L VIN E, Engine Performance Wiring Diagram (3 of 5) for Hummer H3T 2009

List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (3 of 5) for Hummer H3T 2009:

• (attached to fuel rail cylinders 1, 2, 3, 4 & 5) fuel injectors
• (in center front of cam cover at cylinders 1, 2, 3, 4 & 5)
• 5v reference
• 5v reference 1
• A pnk
• Air conditioning system
• Air relay control
• Anti-lock brakes system
• Clutch position sensor (m/t)
• Computer data lines system
• Delivered torque
• Duty cycle signal generator field
• Engine control module (ecm) (right rear corner of engine compt)
• Evap canister purge
• Generator
• High speed gmlan
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• J103 (in engine compt harness, near grille lamps relay, by master cylinder)
• Low reference
• Nca
• Pnk
• Pnp/clutch
• Regulator ctrl
• Requested torque signal
• Serial data bus +
• Serial data bus -
• Signal
• Solenoid control
• Spark plug
• Start sw sig
• Starting/charging system
• Tan

3.7L VIN E, Engine Performance Wiring Diagram (4 of 5) for Hummer H3T 2009

List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (4 of 5) for Hummer H3T 2009:

• (on lower left side of engine block, forward of g102) g103
• (top of engine, mounted on upper air intake manifold) throttle body
• A/c refrigerant
• Air conditioning system
• Air injection reaction ctrl valve ctrl
• Air pump rly/tcm fuse 17 10a
• Cpp sensor signal
• Ect sensor signal
• Engine control module (ecm) (right rear corner of engine compt)
• Engine coolant temperature (ect) sensor (front left of engine)
• Erls fuse 22 15a
• Evaporative emission (evap) canister purge solenoid valve (below intake, in back of alternator)
• Hot w/ run/crnk relay 78 energized
• Ign 1 fuse 33 15a
• Inj fuse 23 15a
• Instrument cluster system
• Manifold absolute pressure (map) sensor (at top right side rear of engine, on intake manifold)
• Map sensor signal
• Nca
• Oil press sw sig
• Pcm-i fuse 21 10a
• Pnk
• Press sens sig
• Tan
• Underhood fuse block (above left front wheelwell)
• Vehicle speed sensor (vss) (m/t) (left rear of transfer case)
• Vss high signal
• Vss low signal

3.7L VIN E, Engine Performance Wiring Diagram (5 of 5) for Hummer H3T 2009

List of elements for 3.7L VIN E, Engine Performance Wiring Diagram (5 of 5) for Hummer H3T 2009:

• (on lower left side of engine block, rearward of g103) g102
• 5v ref 2
• Camshaft position (cmp) sensor
• Camshaft position (cmp) actuator solenoid valve
• Ckp sensor signal
• Cmp actuator sol
• Cmp sensor sig
• Crankshaft position (ckp) sensor (left rear of engine block, below starter)
• Engine control module (ecm) (right rear corner of engine compt)
• Fuel injector 1 control
• Fuel injector 2 control
• Fuel injector 3 control
• Fuel injector 4 control
• Fuel injector 5 control
• Ground
• Heated oxygen sensor (ho2s) 1 (on exhaust manifold on left side of engine)
• Heated oxygen sensor (ho2s) 2 (in exhaust pipe, adjacent to transmission)
• Ho2s heater high ctrl sens 1
• Ho2s heater low ctrl sens 2
• Ho2s high signal sensor 1
• Ho2s high signal sensor 2
• Ho2s low signal sensor 1
• Ho2s low signal sensor 2
• Iat sensor signal
• Ic 1 control
• Ic 2 control
• Ic 3 control
• Ic 4 control
• Ic 5 control
• Ignition voltage
• Knock sensor (ks) bank 2 (below intake manifold, near front of engine)
• Knock sensor signal
• Low ref
• Low reference
• Maf sensor signal
• Mass air flow (maf)/ intake air temperature (iat) sensor (between air cleaner & throttle body)
• Nca
• Pnk
• Red
• Tac motor control 1
• Tac motor control 2
• Tp sensor 1 signal
• Tp sensor 2 signal
• X3 underhood fuse block (above left x3 front wheelwell)

5.3L VIN L

5.3L VIN L, Engine Performance Wiring Diagram (1 of 5) for Hummer H3T 2009

List of elements for 5.3L VIN L, Engine Performance Wiring Diagram (1 of 5) for Hummer H3T 2009:

• (behind right front kick panel) body control module (bcm)
• (in body harness, approximately 14 cm (5.5 in) to right of stop lamp switch breakout in main harness)
• 4wd low signal
• 5 volt reference
• 5v ref 1
• 5v ref 2
• A/c compressor clutch rly ctrl
• Abs/ vses fuse 29 10a
• Acc
• Accy volt
• Air conditioning system
• Anti-theft system
• App sensor 1 signal
• App sensor 2 signal
• Batt pos volt
• Battery positive voltage
• Class 2 serial data
• Cnstr vent fuse 31 10a
• Computer data lines system
• Cruise control release signal
• Cruise control switch signal
• Cruise control system
• Engine control module (ecm) (right rear corner of engine compt)
• Evap canister vent sol ctrl
• Fscm fuse 54 20a
• Fuel level sensor signal
• Fuel pressure sensor
• Fuel pump flow control module
• Fuel pump relay control
• Fuel pump sply volt
• Fuel tank pressure sensor signal
• G420 (mounted to left side rear cross member, near x420)
• Ground
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign volt
• Ignition 1 voltage
• Ignition switch
• Ignition voltage
• J201
• J207
• J215
• Low ref
• Low reference
• Mil control
• Nca
• Off
• Pnk
• Powertrain relay control
• Press sens sig fuel line
• Relay control fuel pump
• Run
• Serial data bus+ hi spd gmlan
• Serial data bus- hi spd gmlan
• Shield extension fuel sys crtl mod
• Sound systems
• Start
• Starter enable relay control
• Starting/ charging system
• Stop fuse 50 15a
• Stop lamp control
• Stop lamp switch (above brake pedal assembly)
• Tan
• Transmissions system
• Underhood fuse block (above left front wheelwell)
• Vehicle speed signal

5.3L VIN L, Engine Performance Wiring Diagram (2 of 5) for Hummer H3T 2009

List of elements for 5.3L VIN L, Engine Performance Wiring Diagram (2 of 5) for Hummer H3T 2009:

• A/c refrigerant
• Accelerator pedal position (app) sensor (on accelerator pedal bracket)
• Air conditioning system
• Clstr fuse 10a
• Computer data lines system
• Ect sensor signal
• Engine control module (ecm) (right rear corner of engine compt)
• Engine coolant temperature (ect) sensor (front left of engine)
• Engine oil ind
• Etc fuse 15a
• Evaporative emission (evap) canister vent solenoid valve (above spare tire)
• Fuel pump & sender assembly (mounted on top of fuel tank)
• Fuel tank pressure (ftp) sensor (top of fuel pump & sender assembly)
• Hot at all times
• Instrument panel cluster (ipc)
• J359 (in chassis harness, approximately 22.5 cm (8.9 in) from fuel pump & sender assembly connector)
• Logic
• Manifold absolute pressure (map) sensor (top of engine, above intake manifold)
• Map sensor signal
• Mil ind
• Nca
• O2 snsr fuse 47 15a
• Pcm-b fuse 25 10a
• Pnk
• Press sens sig
• Pwr/trn relay 81
• Serial data
• Tan
• Underhood fuse block (above left front wheelwell)

5.3L VIN L, Engine Performance Wiring Diagram (3 of 5) for Hummer H3T 2009

List of elements for 5.3L VIN L, Engine Performance Wiring Diagram (3 of 5) for Hummer H3T 2009:

• (top of cylinder head, above cylinders 1, 3, 5 & 7)
• (upper right side of engine, above cylinders 2, 4, 6 & 8) fuel injectors
• 5v reference
• 5v reference 1
• A pnk
• Air conditioning system
• Anti-lock brakes system
• Bank 2 & sens 1
• Bank 2 & sens 2
• C red
• Computer data lines system
• D pnk
• Delivered torque
• Duty cycle signal generator field
• Engine control module (ecm) (right rear corner of engine compt)
• Engine left coil harness
• Evap canister purge
• G103 (on lower left side of engine block, forward of g102)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (left side exhaust, after catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 2 (right side exhaust, after catalytic converter)
• High speed gmlan
• Ho2s heater low
• Ignition coil 1
• Ignition coil 3
• Ignition coil 5
• Ignition coil 7
• J113
• J114
• J118
• J128
• Low reference
• Nca
• Pnk
• Pnp/clutch
• Red
• Regulator ctrl generator
• Requested torque signal
• Serial data bus +
• Serial data bus -
• Signal
• Solenoid control
• Spark plug
• Start sw sig
• Starting/ charging system
• Tan

5.3L VIN L, Engine Performance Wiring Diagram (4 of 5) for Hummer H3T 2009

List of elements for 5.3L VIN L, Engine Performance Wiring Diagram (4 of 5) for Hummer H3T 2009:

• (engine harness) j111
• (right engine coil harness) j116
• (top of cylinder head, above cylinders 2, 4, 6 & 8)
• (top of engine, mounted on upper air intake manifold) throttle body
• Erls fuse 22 15a
• Evaporative emission (evap) canister purge solenoid valve (top of intake manifold near rear of throttle body)
• Fuel injectors (upper left side of engine, above cylinders 1, 3, 5 & 7)
• G103 (on lower left side of engine block, forward of g102)
• Hot w/ run/crnk relay 78 energized
• Ign 1 fuse 33 20a
• Ignition coil 2
• Ignition coil 4
• Ignition coil 6
• Ignition coil 8
• Inj fuse 23 20a
• J117
• J129
• Nca
• Pcm-i fuse 21 10a
• Pnk
• Pnk a
• Pnk d
• Red
• Red c
• Spark plug
• Underhood fuse block (above left front wheelwell)

5.3L VIN L, Engine Performance Wiring Diagram (5 of 5) for Hummer H3T 2009

List of elements for 5.3L VIN L, Engine Performance Wiring Diagram (5 of 5) for Hummer H3T 2009:

• (on lower left side of engine block, rearward of g103) g102
• 5v ref 1
• 5v ref 2
• Camshaft position (cmp) sensor (front of engine above crank pulley)
• Ckp sensor signal
• Cmp sensor signal
• Crankshaft position (ckp) sensor (mounted to right rear of engine block behind starter motor)
• Engine control module (ecm) (right rear corner of engine compt)
• Engine)
• Fuel injector 1 control
• Fuel injector 2 control
• Fuel injector 3 control
• Fuel injector 4 control
• Fuel injector 5 control
• Fuel injector 6 control
• Fuel injector 7 control
• Fuel injector 8 control
• Ground
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (left side exhaust, before catalytic converter)
• Heated oxygen sensor (ho2s) bank 1 sensor 2 (right side exhaust, before catalytic converter)
• Ho2s heater low bank 1 sens 1
• Ho2s heater low bank 1 sens 2
• Ho2s high sig bank 1 sens 1
• Ho2s high sig bank 1 sens 2
• Ho2s low sig bank 1 sens 1
• Ho2s low sig bank 1 sens 2
• Iat sensor signal
• Ic 1 control
• Ic 2 control
• Ic 3 control
• Ic 4 control
• Ic 5 control
• Ic 6 control
• Ic 7 control
• Ic 8 control
• Ignition voltage
• Instrument cluster system
• Knock sensor (ks) 1 (lower left side of b
• Knock sensor (ks) 2 (lower right side of engine)
• Knock sensor 1 signal
• Knock sensor 2 signal
• Low reference
• Maf sensor signal
• Mass air flow (maf) sensor/intake air temperature (iat) sensor (between air cleaner & throttle body)
• Oil pressure sensor signal
• Pnk
• Red
• Tac motor control 1
• Tac motor control 2
• Tan
• Tp sensor 1 signal
• Tp sensor 2 signal
• X3 underhood fuse block (above left x3 front wheelwell)