See also:

Tire Pressure
Tire pressure is displayed in the DIC for each tire in either kilopascals (kPa) or pounds per square inch (psi). Press the vehicle information button until the DIC displays Front Tire kPa (P ...

PARKING ASSIST BLOCKED SEE OWNER'S MANUAL
If the vehicle has the Ultrasonic Rear Park Assist (URPA) system, this message displays if there is something interfering with the park assist system. See Ultrasonic Parking Assist for mor ...

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 v ...