2003 Hummer H2FACTORY OEM SERVICE PROCEDURE

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the engine support fixture. Refer to ENGINE SUPPORT FIXTURE in Engine Mechanical - LX5 (3.5L) or ENGINE SUPPORT FIXTURE in Engine Mechanical - L47 (4.0L).
  2. Raise and support the vehicle.
  3. Remove the front tires and wheels. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
  4. Separate the ball joints from the steering knuckle. Refer to LOWER CONTROL ARM .
  5. Remove the ABS module from the bracket on left front. Refer to ELECTRONIC BRAKE CONTROL MODULE (EBCM) REPLACEMENT .
  6. Disconnect the AIR pumps (3.5L). Leave on frame. Refer to SECONDARY AIR INJECTION PUMP .
  7. Remove the air deflector. Refer to AIR DEFLECTOR REPLACEMENT -- FRONT .
    8. NOTE: RPO code L47 is the 4.0L V8 engine. RPO code LX5 is the 3.5L V6 engine.
  8. Remove the brackets securing the power steering lines to the frame. Refer to POWER STEERING PRESSURE HOSE REPLACEMENT (L47) or POWER STEERING PRESSURE HOSE REPLACEMENT (LX5) . Also refer to POWER STEERING RETURN HOSE REPLACEMENT (LX5) or POWER STEERING RETURN HOSE REPLACEMENT (L47) .
  9. Remove the fasteners securing the front transmission mount to the frame.
    10. Fig 1: Removing Power Steering Lines To Frame Brackets
    G00399260Courtesy of GENERAL MOTORS CORP.
  10. Remove the fasteners securing the rear transmission mount to the frame.
  11. Remove the fasteners securing the rack and pinion to the frame.
  12. Using mechanics wire, secure the rack and pinion to the body of the vehicle.
  13. Support the engine frame near the frame insulators using J 39580 or suitable jackstands.
    14. Fig 2: Supporting Engine Frame
    G00399261Courtesy of GENERAL MOTORS CORP.
  14. Remove the engine frame insulator fasteners (3) securing the engine frame (2) to the vehicle.
    15. Fig 3: Removing Engine Frame Insulator Fasteners
    G00399262Courtesy of GENERAL MOTORS CORP.
  15. Lower the engine frame (2) from the vehicle.
  16. Separate the engine frame insulators from the engine frame. Refer to LOWER CONTROL ARM .
    17. Fig 4: Separating Engine Frame Insulators From Engine Frame
    G00399263Courtesy of GENERAL MOTORS CORP.
  17. Transfer all remaining parts to the new frame assembly.
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.