Diagnostic Aids
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Observe the driver information center (DIC) messaging that would indicate the electrical system requires service.
- Inspect for the following conditions:
- Loose or damaged terminals at the generator
- Loose or worn generator drive belt