OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationStarting the Engine
Automatic Transmission
Move the shift lever to P (Park) or N (Neutral). The engine will not start in
any other position. To restart the engine when the vehicle is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the vehicle is moving. If you
do, you could dam ...
Engine Oil Pressure Light
Caution
Lack of proper engine oil maintenance can damage the engine. Driving
with the engine oil low can also damage the engine. The repairs would not be covered
by the vehicle warranty.
Check the oil level as soon as possible. Add oil if required, but if the oil
level is within the operatin ...
Steering
Electric Power Steering
The vehicle has electric power steering. It does not have power steering fluid.
Regular maintenance is not required.
If power steering assist is lost due to a system malfunction, the vehicle can
be steered, but may require increased effort. See your dealer if there is a ...