Fluids

Proper fluid levels and approved fluids protect the vehicle’s systems and components.

See Recommended Fluids and Lubricants on page 11‑12 for GM approved fluids.

• Engine oil and windshield washer fluid levels should be checked at every fuel fill.

• Instrument cluster lights may come on to indicate that fluids may be low and need to be filled.

    See also:

    Cooling System
    If the vehicle has the Duramax® Diesel engine, see the Duramax® Diesel Supplement for more information. The cooling system allows the engine to maintain the correct working temperature. 5.3 L En ...

    Testing the Alarm
    To test the alarm: 1. From inside the vehicle, lower the driver side window, and open the driver door. 2. Press . 3. Get out of the vehicle, close the door, and wait for the security light to go ou ...

    Transferring Service
    Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, ...