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:
Increasing Speed While Using Cruise Control
If the cruise control system is already activated,
. Press and hold the +RES button on the steering wheel until the desired speed
is reached, then release it.
. To increase vehicle speed in small ...
Cleaning Exterior Lamps/ Lenses and Emblems
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 this section. ...
Battery
Refer to the replacement number shown on the original battery label when a
new battery is needed.
See Engine Compartment Overview for battery location.
WARNING
Battery posts, terminals, and r ...