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:

    Maintenance
    Passenger Compartment Air Filter The filter removes dust, pollen, and other airborne irritants from outside air that is pulled into the vehicle. The filter should be replaced as part of routine ...

    Twilight Sentinel
    This feature automatically turns the lamps on and off. A light sensor on top of the instrument panel makes the Twilight Sentinel® work, so be sure it is not covered. With Twilight Sentinel th ...

    Under the Hood
    Available only with rear-wheel drive, the 3.6-liter V-6 engine produces 255 horsepower and 252 pounds-feet of torque. Cadillac's 4.6-liter Northstar V-8 generates 320 hp and 315 pounds-feet of tor ...