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.
2009 Hummer H2 V8-6.2LFACTORY OEM SERVICE PROCEDURE
Control Module: Service and Repair
Transfer Case Shift Control Module Replacement
Removal Procedure
1. Remove the knee bolster. Refer to Driver Knee Bolster Replacement (Driver Knee Bolster Replacement).
2. Remove the electrical connectors (1) from the transfer case control module (2).
3. Release the transfer case control module from the bracket (1).
4. Remove the transfer case control module (2).
Installation Procedure
1. Install the transfer case control module (2) to the bracket.
2. Ensure the transfer case control module bracket clips (1) are securely retaining the module.
3. Install the electrical connectors (1) to the transfer case control module (2).
4. Install the knee bolster. Refer to Driver Knee Bolster Replacement (Driver Knee Bolster Replacement).
5. Program the module. Refer to Transfer Case Shift Control Module Reprogramming (Programming and Relearning).
6. Start the engine and test the automatic transfer case system for proper shift operation.
Factory Service Tools
Use the Manual With the Right Hardware
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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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