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
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and
an Advisor can run a check.
See also:
Finding a Station
AM Source Shown, Other Sources Similar
If viewing a map screen, press the source screen (AM, FM, XM (if equipped), CD,
etc.) button. The display splits between the audio screen and the map screen ...
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 w ...
Care of Safety Belts
Keep belts clean and dry.
WARNING!
Do not bleach or dye safety belts.
It may severely weaken them.
In a crash, they might not be able
to provide adequate protection.
Clean safety belts only wit ...