Fuel

For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax Diesel Supplement.

For Vehicles with gasoline engines, please read this.

See also:

Vehicle Overview
GM says the Sierra 1500 Hybrid's gasoline V-8 and electric motors team up for an overall mileage improvement compared with the regular Sierra. The Sierra Hybrid is only available as a rear- or fou ...

New Vehicle Break-In
Notice: The vehicle does not need an elaborate break-in. But it will perform better in the long run if you follow these guidelines: • Keep the vehicle speed at 88 km/h (55 mph) or less for the firs ...

Instrument Panel
A. Air Vents on page 8‑5. B. Turn and Lane&-Change Lever. See Turn and Lane-Change Signals on page 6‑3. Exterior Lamp Controls on page 6‑1. Fog Lamps on page 6‑4. C ...