OnStar

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Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer. ...

English and Metric Unit Conversion
To change the display units between English and metric units, see Driver Information Center (DIC) for more information. ...

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. • The ignition should turn to LOCK/OFF only when the shift lever is in P (Park). ...