OnStar®
Keys and LocksTire Pressure Light
For vehicles with the Tire Pressure Monitor System (TPMS), this light comes on
briefly when the engine is started. It provides information about tire pressures
and the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires are significantly underinflated.
A Driver In ...
Cigarette Lighter
For vehicles with a cigarette lighter, it is on the center floor console near
the shift lever.
To activate the cigarette lighter, push it into the heating element and let go.
When the lighter is ready it will pop back out.
Notice: Holding a cigarette lighter in while it is heating does not
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Tire Inspection
We recommend that the tires, including the spare tire, if the vehicle has one,
be inspected for signs of wear or damage at least once a month.
Replace the tire if:
• The indicators at three or more places around the tire can be seen.
• There is cord or fabric showing through the tire's rubb ...