2008 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

Powertrain Component Views

Fig 1: Engine - Left Rear (L92)
GM1975896Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 2: Engine - Right Rear (L92)
GM1975905Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 3: Engine Compartment
GM1975910Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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
Fig 4: Floor Shift Assembly Component Views
GM828435Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Automatic Transmission Shift Lever
2 Automatic Transmission Shift Lever Connector
3 Console Harness
Fig 5: Park Neutral Position (PNP) Switch Component Views (M30/M32)
GM1283232Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Automatic Transmission 4L60-E/4L65-E/4L70-E
2 Park/Neutral Position (PNP) Switch
Fig 6: Transfer Case Control Component Views
GM1221874Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Transfer Case
2 Transfer Case Encoder/Motor Connector
3 Vehicle Speed Sensor (VSS)
Fig 7: Electronic Components
GM1749030Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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

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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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