Visual/Physical Inspection
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect for aftermarket devices which could affect the operation of the automatic transmission shift lock control.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.