Autostop Conditions
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Numerous conditions must all be within acceptable limits in order for the HPCM to allow the Autostop hybrid mode. The Typical Scan Tool Data information lists the vehicle conditions required for Autostop operation.