See also:

Liftgate
Power Liftgate Vehicles with an automatic transmission must be in P (Park) and a manual transmission must be in Neutral to operate the power liftgate. To open the liftgate from inside, s ...

Running the Vehicle While Parked
It is better not to park with the engine running. But if you ever have to, here are some things to know. WARNING Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engin ...

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 ...