Replacing bulbs

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Xenon bulbs

If your vehicle is equipped with Xenon bulbs, you can recognize this by the following: the cone of light from the Xenon bulbs moves from the top to the bottom and back again when you start the eng ...

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Fuel
Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline a ...

Adaptive Forward Lighting (AFL)
Vehicles with the Adaptive Forward Lighting System (AFL) have headlamps that swivel to the left or right when making a turn to provide better lighting. To enable AFL, set the exterior lamp switch ...

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 ...