Circuit/System Verification
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.
Verify that DTC B1004 is not set.
- If the DTC is set, perform the setup procedure on the applicable control module, if the DTC resets replace the module.