Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Hummer H2 V8-6.2LFACTORY OEM SERVICE PROCEDURE
Powertrain Component Views
Powertrain Component Views
Engine - Left Rear (L92)
1 - Valve Lifter Oil Manifold Assembly (VLOM)
2 - Ignition Coil 8
3 - Fuel Injector 8
4 - Ignition Coil 6
5 - Fuel Injector 6
6 - Manifold Absolute Pressure (MAP) Sensor
7 - Throttle Body Assembly
8 - Magnetic Sensor
9 - Camshaft Position (CMP) Sensor
10 - Fuel Injector 2
11 - Ignition 2
12 - A/C Compressor
13 - Fuel Injector 4
14 - Ignition Coil 4
15 - Knock Sensor (KS) 2
16 - Starter
17 - Crankshaft Position (CKP) Sensor
Engine - Right Rear (L92)
1 - Ignition Coil 1
2 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
3 - Ignition Coil 5
4 - Fuel Injector 3
5 - Fuel Injector 5
6 - Ignition Coil 7
7 - Fuel Injector 7
8 - Engine Oil Pressure (EOP) Sensor
9 - Knock Sensor (KS) 1
10 - Engine Coolant Temperature (ECT) Sensor
11 - Engine Block Heater Connector
12 - Ignition Coil 3
13 - Fuel Injector 1
Engine Compartment
1 - Brake Fluid Level Switch
2 - Electronic Brake Control Module (EBCM)
3 - Throttle Actuator Control (TAC) Module
4 - Fuse Block-Underhood
5 - Battery
6 - Engine Control Module (ECM)
7 - Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor
8 - A/C Low Pressure Switch
9 - Accumulator
Automatic Transmission Shift Lever
Automatic Transmission Shift Lever:
1 - Automatic Transmission Shift Lever
2 - Automatic Transmission Shift Lever Connector
3 - Console Harness
Park Neutral Position (PNP) Switch
Park Neutral Position (PNP) Switch:
1 - Automatic Transmission 4L60-E/4L65-E/4L70-E
2 - Park/Neutral Position (PNP) Switch
Transfer Case Components
Transfer Case Components:
1 - Transfer Case
2 - Transfer Case Encoder/Motor Connector
3 - Vehicle Speed Sensor (VSS)
Electronic Components
Electronic Components:
36 - Vehicle Speed Sensor (VSS) - Model Dependent
66 - Torque Converter Clutch (TCC) Solenoid Valve
69 - Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
367a - 1-2 Shift Solenoid (SS) Valve
367b - 2-3 Shift Solenoid (SS) Valve
377 - Pressure Control (PC) Solenoid Valve
394 - 3-2 Shift Solenoid (SS) Valve Assembly
396 - Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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