See also:

Retained Accessory Power (RAP)
These vehicle accessories can be used for up to 10 minutes after the engine is turned off: ► Audio System ► Power Windows ► Sunroof (If Equipped) ► Auxiliary Power Outle ...

What to Use
To determine what kind of fluid to use, see Recommended Fluids and Lubricants. Always use the proper fluid. Notice: Use of the incorrect fluid may damage the vehicle and the damages may not be c ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...