First Engine Oil Change After Every 160 000 km/100,000 Miles

• Automatic transmission fluid change (normal service). See Automatic Transmission Fluid .

• Spark plug replacement. An Emission Control Service.

    See also:

    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 ...

    Exterior Lighting
    The exterior lamp control is located on the instrument panel on the outboard side of the steering wheel. Turn the control to the following positions: : Turns off the exterior lamps. The kn ...

    Scanning the Terrain
    Off-road driving can take you over many different kinds of terrain. You need to be familiar with the terrain and its many different features. Here are some things to consider. Surface Conditio ...