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:
Consistency of Readings
Always check the fluid level at least twice using the procedures described. Consistency
(repeatable readings) is important to maintaining proper fluid level. If fluid is
added, it may take 15 minu ...
Wagon Model
Pull the lever toward you to spray
washer fluid on the windshield.
The spray continues until the lever
is released. The wipers will run a
few times.
WASHER FLUID LOW ADD FLUID
displays on th ...
Starting the Engine
When first starting the vehicle, the
engine idle speed will be elevated
to allow the catalytic converter, an
emissions control device, to quickly
reach operating temperature.
After approximat ...