GM Service Manual Online
For 1990-2009 cars only

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.

This vehicle can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Gasoline Octane and Fuel E85 (85% Ethanol).