OnStar Services

See also:

Engine Air Cleaner/Filter
See Engine Compartment Overview   for the location of the engine air cleaner/filter. Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oi ...

Parking on Hills
WARNING Parking the vehicle on a hill with the trailer attached can be dangerous. If something goes wrong, the rig could start to move. People can be injured, and both the vehicle and the tr ...

SIDE BLIND ZONE ALERT SYSTEM TEMPORARILY UNAVAILABLE
This message indicates that the SBZA system is disabled because the sensor is blocked and cannot detect vehicles in the blind zone. The sensor may be blocked by mud, dirt, snow, ice, or slush ...