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.
Telematics Communication Interface Control Module Generation Identification
To properly choose certain OnStar Diagnostic Trouble Codes and Symptom diagnostics you will need to identify which generation of the Telematics Communication Interface Control Module that you are working with. Listed below are instructions to determine which generation module you have-
- Scan Tool - Under Module Diagnostics select Telematics Communication Interface Control Module then select Identification Information. The generation of the module will be displayed under the data parameter Module Generation Identifier.
Or
- Inspect the label on the Telematics Communication Interface Control Module. The label will indicate if it is a Generation 9.XX or a Generation 10 module.
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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.