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.
2007 Buick Rainier AWD L6-4.2LFACTORY OEM SERVICE PROCEDURE
NVG 126-NP4 - Transfer Case
Transfer Case Shift Control Module Replacement
Removal Procedure
Important: The access panel is removed in order to visually see the electrical connectors and the location of the transfer case control module. It will also be easier to see the mounting and alignment slots for the transfer case control module mounting bracket.
1. Remove the access panel.
2. Remove the left side closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side.
3. Remove the transfer case control module (1) and mounting bracket from the instrument panel mag beam.
4. Disconnect the 3 electrical connectors from the transfer case control module.
5. Remove the transfer case control module from the mounting bracket.
Installation Procedure
1. Install the transfer case control module (1) to the mounting bracket.
2. Connect the 3 electrical connectors to the transfer case control module.
3. Install the transfer case control module and mounting bracket to the instrument panel mag beam.
4. Install the left side closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side.
5. Install the access panel.
6. Program the transfer case shift control module. Refer to Control Module References.
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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