Electrical System and Sensor Diagnostic and Repair Advice

Your GM's electrical system and numerous sensors control everything from ignition timing to windshield wiper speed. If your brakes are your vehicle's most important safety system, the electrical components are a close second.

We've compiled some information to help you diagnose and/or fix problems with your vehicle's electrical system or sensors, and you can find an alphabetical list of the guides we've created below. If you have a specific question about the parts you need, or if you see an issue with our guides, please contact us or call 877-498-7278.

Electrical System Repair Tips and Diagnostic Advice