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 OnStar Additional Information , and an Advisor can run a check.

    See also:

    How to Check
    Use a good quality pocket-type gage to check tire pressure. You cannot tell if your tires are properly inflated simply by looking at them. Radial tires may look properly inflated even when they’ ...

    PASS-Key® III+ Electronic Immobilizer
    See Radio Frequency Statement for information regarding Part 15 of the Federal Communications Commission (FCC) Rules and RSS-210/211 of Industry and Science Canada. ...

    Canceling a Remote Start
    To cancel a remote start, do any of the following: • Aim the RKE transmitter at the vehicle and press and hold until the parking lamps turn off. • Turn on the hazard warning flashers. ...