GM Service Manual Online
For 1990-2009 cars only

Object Number: 1709528  Size: A1

If this light comes on, there could be a problem with the hill start assist feature. See your dealer/retailer for service.

If on an incline, your vehicle may roll backwards a short distance until the engine performs the auto start.

The hill start assist feature helps hold the vehicle on a moderate or steep incline when transitioning from a hybrid idle stop to starting the engine.