See also:

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 ...

Remote Keyless Entry (RKE) System
The RKE transmitter is used to remotely lock and unlock the doors from up to 60m (195 ft) away from the vehicle. Press to unlock the driver door. Press again within three seconds to unlock a ...

Manual Operation of Power Liftgate
To change the liftgate to manual operation, press OFF on the liftgate switch. With the power liftgate disabled and all of the doors unlocked, the liftgate can be manually opened and closed. To ope ...