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 
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Advisor can run a check.
See also:
Service Publications Ordering Information
Service Manuals
Service Manuals have the diagnosis and repair information on the engines, transmission,
axle, suspension, brakes, electrical, steering, body, etc.
Service Bulletins
Service Bullet ...
Manual Fold and Tumble Feature
Folding and Tumbling the Seat
To fold and tumble the seat:
1. Make sure that there is nothing under, in front of, or on the seat.
Notice: Folding a rear seat with the safety belts still fastened ma ...
Ashtrays
There may be an ashtray located under the climate control system on the
instrument panel. Press the door to release the ashtray.
To empty the ashtray, remove it from the instrument panel by holdin ...