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:
High-Beam Headlamp/ Low-Beam Headlamp
1. Open the hood. See Hood .
2. For the driver side bulb, remove the windshield washer bottle filler neck
by firmly pulling it straight up and out of the bottle.
3. Remove the battery cover by pul ...
Recommended Fluids and Lubricants
Usage
Fluid/Lubrican
Engine Oil
The engine requires engine oil approved to the dexos specification.
Oils meeting this specification can be identified with the dexos
cer ...
Electric Parking Brake Light
The Electric Parking Brake (EPB) light should come on briefly as the engine is
started. If it does not come on, have the vehicle serviced by your dealer.
The parking brake status light comes on w ...