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:

Cleaning Exterior Lamps/ Lenses and Emblems
Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps and lenses. Follow instructions under "Washing the Vehicle" later in this section. ...

Instrument Panel (Base/Uplevel Version)
Instrument Panel (Base/Uplevel Version) A. Air Vents on page 8‑11. B. Turn and Lane-Change Lever. See Turn and Lane-Change Signals on page 6‑6. Windshield Wiper/Washer on page 5 ...

Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating on page 10‑18. ...