OnStar Services

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Checking Engine Oil
It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a yellow loop. S ...

Installing the Crossrails
A. Crossrails B. Siderail Cover Before installing the crossrails (A), remove the siderail covers (B). Pull straight up on the rear of the siderail cover. Store covers flat, do not stack it ...

California Perchlorate Materials Requirements
Certain types of automotive applications, such as airbag initiators, safety belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate ...