Diagnostic Aids

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the CKP sensor connector and the ECM connector for corrosion.
With a DTC set, the engine may crank for an extended period of time at start-up.