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:
First Engine Oil Change After Every
80 000 km/50,000 Miles
• Engine air cleaner filter replacement. See Engine
Air Cleaner/Filter.
• Automatic transmission fluid change (severe
service) for vehicles mainly driven in heavy
city traffic in hot weathe ...
DVD Player Buttons (With Sunroof)
(Play/Pause): Press this
button to start play
of a DVD or CD. Press this button while a
DVD or CD is playing to pause it. Press this button
again to continue the play of the DVD or CD.
(Stop ...
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during severe operating
conditions. See Engine Overheating . ...