While parked and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.
Contact your dealer if service is required.
Automatic Transmission Shift Lock Control Function Check
Park Brake and P (Park) Mechanism CheckLiftgate
To lock or unlock the liftgate from the outside, use the key in the liftgate
lock.
If equipped, press on the RKE transmitter
to unlock all doors and press to lock.
See Remote Keyless Entry (RKE) System Operation on page 2-3.
Without RKE
With RKE
To lock or unlock the liftgate fro ...
Navigation
OnStar navigation requires a specific OnStar subscription plan.
Press to receive directions or
have them sent to the vehicle navigation screen, if equipped.
Destinations can also be forwarded to the vehicle from MapQuest.com.
Turn-by-Turn Navigation
Press to connect to a live
Advisor.
...
AM-FM Radio
Playing the Radio without Touchscreen
Audio Source Menu
/VOL (Power/Volume): Press to turn
the system on and off. Turn to increase or decrease the volume.
MENU/TUNE: Turn to change the radio station.
RADIO/BAND: Press to select AM and FM.
INFO: Press to display additional information that ma ...