Circuit/System Verification
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, verify DTC U1500 is set as current.
- If DTC U1500 is not current, refer to Testing for Intermittent Conditions and Poor Connections .
- Replace the VCIM.