Diagnostic Aids
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Low voltage or a momentary loss of power or ground to the ECM may cause a DTC to set. Verify the following:
- The battery cables are clean and tight, and the battery is fully charged. Refer to Battery Inspection/Test .
- The ECM ground circuits do not have an open or high resistance.
- The ECM power circuits do not have an open, short to ground, or high resistance.