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.
Installation Procedure
- If you are replacing the VCIM, record the 10-digit Standard Identification (STID) number and the 11-digit Electronic Serial Number (ESN) from the labels on the new module.
- Connect the navigation antenna coaxial cable to the module.
- Connect the electrical connectors.
- Connect the mobile telephone antenna cable to the module by pushing inward on the square plastic housing.
- Align the module to the vehicle communication module bracket.
- Install the communication interface module nuts.
Tighten: Tighten the nuts to 2 N.m (18 lb in).
- Replace the carpet within the bin.
- Close the right rear compartment bin.
- Close the rear compartment.
- Reconfigure the OnStar® System. Refer to ONSTAR RECONFIGURATION (GEN 5) or ONSTAR RECONFIGURATION (GEN 6.1) .
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.
