2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 466

This vehicle has an airbag system. Before attempting to do your own service work, see Servicing Your Airbag-Equipped Vehicle on page 2‑92. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Record on page 7‑17. Fuel For diesel engine vehicles, see "Diesel Fuel Requirements and Fuel System" in the DURAMAX® Diesel manual. For vehicles with gasoline engines, please read this. Adding Equipment to the Outside of the Vehicle Things added to the outside of the vehicle can affect the airflow around it. This can cause wind noise and can affect fuel economy and windshield washer performance. Check with your dealer before adding equipment to the outside of the vehicle. Gasoline Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com. 6-6