OnStar Services

See also:

Headlamp High/Low-Beam Changer
Push the turn signal/lane change lever away from you and release, to turn the high beams on. To return to low beams, push the lever again or pull it toward you and release. This indicator lig ...

Lumbar Adjustment
To adjust the lumbar support: Press and hold the front or rear of the control to increase or decrease lumbar support. Press and hold the top or bottom of the control to raise or lower the ...

Windows
Pushing or pulling the switch part of the way will open or close the window as long as the switch is operated. Fully push the front of the switch down and release it to express—down the windo ...