The 8th digit of your vehicle identification number (VIN) shows the code letter for your engine. You will find the VIN at the top left of your instrument panel.

If you have the 2200 L4 (Code 5) engine, you may use either regular unleaded gasoline or ethanol fuel up to 85 percent (E-85).

Only vehicles with the 2200 L4 (Code 5) engine may use 85 percent ethanol fuel (E-85).

Most service stations will not have an 85 percent ethanol fuel E-85 pump available. Those stations that do have E-85 should have a label indication minimum ethanol content. Do not use the fuel if the minimum ethanol content is more than 85  percent . Your vehicle may not operate properly if the ethanol content is more than 85 percent .

At a minimum, E-85 should meet ASTM D 5798 specifications. GM has developed improved E-85 specifications GM4729M that prohibit contamination by traces of strong acids. E-85 fuels meeting GM4729M could provide improved durability compared to other E-85 fuels.

To ensure quick starts in the winter time, the E-85 fuel must be formulated properly for your climate according to ASTM specification D 5798. If you have trouble starting on E-85, it may be because your E-85 fuel is not properly formulated for your climate. If this happens, switching to gasoline or adding gasoline to your fuel tank may improve starting. Mixing gasoline and E-85 in your fuel tank will not cause any problems with your vehicle. E-85 fuel that is properly formulated for use in temperatures between -18 to +0°C (0-32°F) will contain about 70 percent ethanol. For good starting and heater efficiency below -18°C (0°F), the fuel mix in the fuel tank should contain a maximum of 50 percent ethanol.

E-85 has less energy per gallon than gasoline, so you will need to refill your fuel tank more often when using E-85 than when you are using gasoline. Use regular gasoline when pulling a trailer. For payload capacity with ethanol fuel see "Loading Your Vehicle" in the Index.

NOTICE: Some additives are not compatible with E-85 fuel and may harm your fuel system. Damage caused by additives may not be covered by your new vehicle warranty. Do not use additives with E-85 fuel.

NOTICE: Your vehicle was not designed for fuel that contains methanol. Do not use fuel that contains methanol. Fuel that contains methanol can corrode metal parts in your fuel system and also damage plastic and rubber parts. That damage would not be covered under your warranty.