Diagnostic Aids
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- The radio RAP mode is separate function and will still operate properly.
- The ignition switch will not return to the OFF position if the RAP relay does not energize.