Filter
Top Products
Adding Equipment to the Outside
of Your Vehicle
Things you might add to the outside of your
vehicle can affect the airflow around it. This may
cause wind noise and affect windshield washer
performance. Check with your dealer before
adding equipment to the outside of your vehicle.
Fuel
If your vehicle has a diesel engine, see
“Diesel Fuel Requirements and Fuel System”
in the DURAMAX
®
Diesel Supplement.
For vehicles with gasoline engines, please
read this.
Gasoline
Use of the recommended fuel is an important
part of the proper maintenance of your vehicle.
To help keep your engine clean and maintain
optimum vehicle performance, GM recommends
the use of gasoline advertised as TOP TIER
Detergent Gasoline.
The 8th digit of your Vehicle Identification
Number (VIN) shows the code letter or number
that identifies your engine. You will find the VIN at
the top left of the instrument panel. See Vehicle
Identification Number (VIN) on page 388.
If your vehicle has the 5.3L V8 engine (VIN
Code Z), you may use either regular unleaded
gasoline or ethanol fuel containing up to 85%
ethanol (E85); also see Fuel E85 (85% Ethanol)
on page 291. In all other gasoline engines,
use only regular unleaded gasoline.
288