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 an Advisor can run a check., and an Advisor can run a check.

    See also:

    Transfer Case
    If the vehicle is equipped with All-Wheel Drive, be sure to perform the lubricant checks described in this section. ...

    Vehicle Symbol Chart
    Here are some additional symbols that may be found on the vehicle and what they mean. For more information on the symbol, refer to the Index. : Adjustable Pedals : Airbag Readiness Light : Air ...

    Verify Minutes and Expiration
    Push and say “minutes” then “verify” to check how many minutes remain and their expiration date. ...