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.
2005 Pontiac Grand Prix V6-3.8L SC VIN 4FACTORY OEM SERVICE PROCEDURE
OnStar - Communication Interface Module - Programming and Setup
COMMUNICATION INTERFACE MODULE (ONSTAR) PROGRAMMING AND SETUP
Each of the following service procedures require programming or setup procedures to be performed on the communication interface module.
Communication Interface Module Replacement
If the OnStar communication interface module is replaced, the setup procedure needs to be performed. Please refer to OnStar Reconfiguration in Cellular Communication.
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.