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Usage Of E85 Fuel In Gm Vehicles (05-06-04-035E)

Publication date: 2015-05-27
Reference number: 05-06-04-035E
Supersedes refnos: 05-06-04-035A, 05-06-04-035B, 05-06-04-035C

USAGE OF E85 FUEL IN GM VEHICLES

USAGE OF E85 FUEL IN GM VEHICLES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 05-06-04-035E, Date of Issue:  May 27, 2015
Affected Model(s): 2015 and Prior GM Passenger Cars and Trucks Vehicles Equipped with E85 Capability
Supercedes: This Bulletin has been revised to add 2015 Model Year vehicles and engines with E85 capability. Please discard Corporate Bulletin Number 05-06-04-035D.

CUSTOMER INTEREST IN E85 FUEL

Vehicles manufactured for ethanol use are commonly called flexible fuel vehicles (FFVs) and include a wide range of vehicles, such as compact, midsize, sport utility and pickup trucks.

As the retail price of gasoline increases, some customers at various refueling stations are seeing substantial price differentials between regular unleaded gasoline and E85, where E85 is selling for significantly less than regular unleaded gasoline. The result of this is that some customers have inquired if they are able to use E85 fuel in non-E85 compatible vehicles.

Only FFVs designed for use with E85 should use E85 blended fuel. E85 compatibility is designated for vehicles that are certified to run on a blend of up to 85% ethanol and 15% gasoline. All General Motors Model Year 2011 and older non-FFV gasoline vehicles are designed to run on fuel that contains no more than 10% ethanol. Starting in Model Year 2012, GM non-FFV United States vehicles are capable of using gasoline with up to 15% ethanol. These requirements are explained in the vehicle Owner Manual.

Using fuel containing greater than 10% or 15% ethanol, as indicated in the Owner Manual in non-E85 designated vehicles can cause driveability issues, malfunction indicator lamp (MIL) illumination, engine damage, increased fuel system corrosion and various driver information center (DIC) messages may also display.

Diesel engines are not E85 compatible.  

USING E85 FUELS IN NON-COMPATIBLE VEHICLES

Fueling non-E85 designated vehicles with E85, or with fuels where the concentration of ethanol exceeds the Owner Manual indicated maximum of 10% or 15%, may result in one or more of the following:

E85 COMPATIBLE VEHICLES

GM3819684Courtesy of GENERAL MOTORS COMPANY
NOTE:

General Motors started putting yellow gas caps on E85 FlexFuel Vehicles (FFVs) as of Model Year 2006. If the customer is unsure whether their vehicle is E85 capable, advise them to look on their vehicle for a yellow gas cap.  

The following is a list of E85 compatible vehicles produced by General Motors:

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