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:
What to Add
When you do need brake fluid, use only DOT-3
brake fluid. Use new brake fluid from a sealed
container only.
Always clean the brake fluid reservoir cap and the
area around the cap before removing i ...
Exterior Care
Cleaning Exterior Lamps/ Lenses
Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps and lenses.
Follow instructions under “Washing the Vehicle” later in ...
Manual Foldaway Mirrors
These mirrors can be folded inward
to prevent damage when going
through an automatic car wash. To
fold, pull the mirror toward the
vehicle. Push the mirror outward to
return it to the origin ...