Vehicle Checks
See also:
Driving in Water
WARNING
Driving through rushing water can be dangerous. Deep water can sweep your vehicle
downstream and you and your passengers could drown. If it is only shallow water,
it can still wash a ...
PARK BRAKE RELEASED
For vehicles with the electric parking
brake, this message displays
when the parking brake has been
released from the set position.
See the electric parking brake
information under Parking Br ...
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 ...






