OnStar Services

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Rocking Your Vehicle to Get It Out
First, turn the steering wheel left and right. That will clear the area around the front wheels. Then shift back and forth between REVERSE (R) and a forward gear, spinning the wheels as little ...

Radio Menus (Radio with CD and Touchscreen)
Tone Menu To access the sound menu, press the TONE button. Use the sound menu to adjust the following features: Bass Middle Treble EQ Fade Balance Setting the Tone To adjust the ba ...

Checking the Fluid Level
Prepare your vehicle as follows: 1. Park your vehicle on a level place. Keep the engine running. 2. With the parking brake applied, place the shift lever in PARK (P). 3. With your foot on the b ...