OnStar Services

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When the System Does Not Seem To Work Properly
Missed alerts can occur under normal circumstances and will increase in wet conditions. The system does not need to be serviced. SBZA is designed to ignore stationary objects; however, the system ...

How to Check Power Steering Fluid
Notice: Extremely small amounts of contamination can cause steering system damage and cause it to not work properly. Do not allow contaminants to contact the fluid side of the reservoir cap/ dipst ...

Exterior Lighting
The exterior lamp control is located toward the end of the turn signal/lane change lever. : Turn the band with this symbol on it to operate the exterior lamps. The exterior lamp control h ...