Head Restraint Adjustment
Do not drive until the head restraints for all occupants are installed and adjusted properly.
To achieve a comfortable seating position, change the seatback recline angle as little as necessary while keeping the seat and the head restraint height in the proper position.
See Head Restraints and Power Seat Adjustment .
See also:
Sound Menu
(Sound): Press this key or press
CONFIG to access the Sound menu to adjust the treble, midrange, bass, fade, balance,
and Digital Signal Processing (DSP). The system automatically stores audio ...
Tire Inspection
We recommend that the tires, including the spare tire, if the vehicle has
one, be inspected for signs of wear or damage at least once a month.
Replace the tire if:
- The indicators at three or ...
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 ...