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E15 Ethanol Fuel Is Available This Summer, But Is Your GM Vehicle Compatible?

The U.S. Environmental Protection Agency (EPA) has issued an emergency waiver allowing the nationwide sale of E15 gasoline (gasoline blended with 15 percent ethanol) during the 2025 summer driving season, effective May 1st. The move is meant to provide relief at the pump by increasing the general fuel supply and offering consumers additional fuel choices. However, some folks may be wondering – is my GM vehicle compatible with E15?

All 2025-model-year gasoline-powered GM vehicles are compatible with E15 fuel.

First, a quick clarification on what E15 actually is. Most gasoline sold in the U.S. includes a blend of 10 percent ethanol (E10), while E15 fuel ups that blend to 15 percent ethanol. E15 is becoming more common across the U.S, in particular in states in the Midwest where the majority of the nation’s corn is grown. E15 is also generally less expensive than E10.

There are some drawbacks as well. The EPA has raised concerns that E15 fuel could lead to increased smog during the summer driving season. However, the EPA is now relaxing restrictions in an effort to lower fuel prices.

So – is your GM vehicle compatible?

2025MY GM Vehicle Fuel Requirements
Model Engine Required Fuel Recommended Fuel E15 Capable E85 Capable B20 Capable
Buick Enclave Turbo 2.5L I4 LK0 Regular 87 - Yes No -
Buick Encore GX Turbo 1.2L I3 LBP Regular 87 - Yes Yes -
Buick Encore GX Turbo 1.3L I3 L3T Regular 87 - Yes No -
Buick Envision Turbo 2.0L I4 LSY Regular 87 - Yes No -
Buick Envista Turbo 1.2L I3 LBP Regular 87 - Yes Yes -
Cadillac CT4 Turbo 2.0L I4 LSY Regular 87 Premium 91 Yes No -
Cadillac CT4 / CT4-V Turbo 2.7L I4 L3B Premium 91 - Yes No -
Cadillac CT4-V Blackwing Twin-Turbo 3.6L V6 LF4 Premium 91 - Yes No -
Cadillac CT5 Turbo 2.0L I4 LSY Regular 87 Premium 91 Yes No -
Cadillac CT5 / CT5-V Twin-Turbo 3.0L V6 LGY Premium 91 - Yes No -
Cadillac CT5-V Blackwing Supercharged 6.2L V8 LT4 Premium 91 - Yes No -
Cadillac Escalade 6.2L V8 L87 Regular 87 Premium 91 Yes No -
Cadillac XT4 Turbo 2.0L I4 LSY Regular 87 Premium 91 Yes No -
Cadillac XT5 Turbo 2.0L I4 LSY Regular 87 Premium 91 Yes No -
Cadillac XT5 3.6L V6 LGX Regular 87 - Yes No -
Cadillac XT6 Turbo 2.0L I4 LSY Regular 87 Premium 91 Yes No -
Cadillac XT6 3.6L V6 LGX Regular 87 - Yes No -
Chevy Blazer Turbo 2.0L I4 LSY Regular 87 - Yes No -
Chevy Blazer 3.6L V6 LGX Regular 87 - Yes No -
Chevy Colorado Turbo 2.7L I4 L3B Regular 87 - Yes No -
Chevy Corvette Stingray 6.2L V8 LT2 Premium 91 - Yes No -
Chevy Corvette Z06 5.5L V8 LT6 Premium 91 - Yes No -
Chevy Corvette E-Ray 6.2L V8 LT2 HEV Premium 91 - Yes No -
Chevy Corvette ZR1 Twin-Turbo 5.5L V8 LT7 Premium 91 - Yes No -
Chevy Equinox Turbo 1.5L I4 LSD Regular 87 - Yes No -
Chevy Express 4.3L V6 LV1 Regular 87 - Yes No -
Chevy Express 6.6L V8 L8T Regular 87 - Yes No -
Chevy Malibu Turbo 1.5L I4 LFV Regular 87 - Yes No -
Chevy Silverado 1500 Turbo 2.7L I4 L3B Regular 87 - Yes No -
Chevy Silverado 1500 5.3L V8 L84 Regular 87 - Yes Yes1 -
Chevy Silverado 1500 6.2L V8 L87 Regular 87 Premium 91 Yes No -
Chevy Silverado 1500 Turbo 3.0L I6 Diesel LZ0 Ultra Low Sulfur Diesel - - - Yes
Chevy Silverado HD 6.6L V8 L8T Regular 87 - Yes Yes -
Chevy Silverado HD Turbo 6.6L V8 Diesel L5P Ultra Low Sulfur Diesel - - - Yes
Chevy Tahoe 5.3L V8 L84 Regular 87 - Yes Yes -
Chevy Tahoe 6.2L V8 L87 Regular 87 Premium 91 Yes No -
Chevy Tahoe Turbo 3.0L I6 Diesel LZ0 Ultra Low Sulfur Diesel - - - Yes
Chevy Suburban 5.3L V8 L84 Regular 87 - Yes Yes -
Chevy Suburban 6.2L V8 L87 Regular 87 Premium 91 Yes No -
Chevy Suburban Turbo 3.0L I6 Diesel LZ0 Ultra Low Sulfur Diesel - - - Yes
Chevy Trax Turbo 1.2L I3 LBP Regular 87 - Yes Yes -
Chevy Trailblazer Turbo 1.2L I3 LBP Regular 87 - Yes Yes -
Chevy Trailblazer Turbo 1.3L I3 L3T Regular 87 - Yes No -
Chevy Traverse Turbo 2.5L I4 LK0 Regular 87 - Yes No -
GMC Acadia Turbo 2.5L I4 LK0 Regular 87 - Yes No -
GMC Canyon Turbo 2.7L I4 L3B Regular 87 - Yes No -
GMC Savana 4.3L V6 LV1 Regular 87 - Yes No -
GMC Savana 6.6L V8 L8T Regular 87 - Yes No -
GMC Sierra 1500 Turbo 2.7L I4 L3B Regular 87 - Yes No -
GMC Sierra 1500 5.3L V8 L84 Regular 87 - Yes Yes1 -
GMC Sierra 1500 6.2L V8 L87 Regular 87 Premium 91 Yes No -
GMC Sierra 1500 Turbo 3.0L I6 Diesel LZ0 Ultra Low Sulfur Diesel - - - Yes
GMC Sierra HD 6.6L V8 L8T Regular 87 - Yes Yes -
GMC Sierra HD Turbo 6.6L V8 Diesel L5P Ultra Low Sulfur Diesel - - - Yes
GMC Terrain Turbo 1.5L I4 LSD Regular 87 - Yes No -
GMC Yukon / Yukon XL 5.3L V8 L84 Regular 87 - Yes Yes -
GMC Yukon / Yukon XL 6.2L V8 L87 Regular 87 Premium 91 Yes No -
GMC Yukon / Yukon XL Turbo 3.0L I6 Diesel LZ0 Ultra Low Sulfur Diesel - - - Yes
  1. Optional for fleet or government sales only

In short, all 2025-model-year gasoline-powered GM vehicles are compatible with E15 fuel. However, there are some caveats.

Older vehicle owners are advised to check their owner manual to ensure their vehicle is compatible. Additionally, any vehicle that is not FlexFuel compatible should avoid mid-level ethanol blends (16 to 50 percent ethanol), E85, and FlexFuel. Also, make sure that you use fuel with the recommended octane rating.

Avoid fuel with any amount of methanol, methylal, ferrocene, and aniline, as it can corrode metal parts and damage plastic or rubber parts. Also avoid fuel containing metals like methylcyclopentadienyl manganese tricarbonyl (MMT), which can damage emission control systems and spark plugs.

President Trump recently signed an Executive Order declaring a national energy emergency and directing the EPA to explore additional emergency fuel waivers. The move aims to strengthen U.S. energy independence and expand access to renewable fuels.

Jonathan is an automotive journalist based out of Southern California. He loves anything and everything on four wheels.

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Comments

  1. Eliminating ethanol is one good thing Trump could do.

    Having everyone get worse mileage with an inferior fuel (and subsidizing Iowa with our tax dollars for it) is just as bad as the recently struck-down mandate that would’ve forced all of us into electrics because California says so.

    Reply
  2. I only use non ethanol gas in all my cars

    Reply
  3. E15? How about E ZERO? Ethanol is hydroscopic garbage that destroys fuel systems. It caused nearly 10K in damage to the fuel system on a classic I keep stored most of the year and very nearly burned down my garage after eating the gaskets on a carburetor on a motorcycle. Ethanol laced fuel is a criminal enterprise with no purpose other than grift.

    Reply
    1. Clearly a case of why ethanol tainted fuel should not be used in any older vehicles.
      Like the warnings contained in this very article, and in numerous others, over the years since ethanol fuel became an “option”.

      Reply
      1. It’s not optional everywhere. There are very few stations that carry non ethanol fuel in Canada, it’s usually on the 94 octane and very few locations to buy it.
        10% is in 99% of stations up here.

        Reply
  4. I think we need to get rid of big government and radical left lunatics like Nader. Ruined cars. Bring back leaded Ethyl. My LaSalle ran great. Who needs nanny back up cameras. God gave me a head that swivels. You young ‘ins know nothing.

    Reply
  5. Nice to finally see some useful information for a change, thank you.

    Reply
  6. I notice that the Buick Envision engine can run on regular unleaded, but the Cadillac XT4 is recommended to run on premium unleaded although both use the same engine. It seems like a discrepancy.

    Reply
    1. I looked into it when I was helping a sibling shop for a new suv. They have a slight different tune (which is why the HP is slightly different) but it’ll run fine on regular. The modern knock sensors will adjust it if needed and maybe drop a couple HP, but not enough to notice.
      They literally decided to have premium recommended because it’s a luxury vehicle, and it should use premium like all other luxury vehicles. I wish i was kidding.

      Reply
  7. All Alcohol fuel stations have been shut down in our area and are for sale with no takers. They almost destroyed millions of dollars worth of GM police cars. Because these stations were city owned and open to the public the lawsuits overwhelmed the legal department. We now have several non alcohol stations in the area and they are so busy it is difficult to get in and out except in non peak times. This nonsense is only for the woke areas that the queen of wokeness Mary Barra worships… My wife says she could GM from her bedroom.

    Reply
  8. Ethanol is good IF the vehicle was designed to use it. The adverse effects are mainly to carburetors and fuel lines and some fuel pumps. Short story…….if it wasn’t designed for it, DON’T use it.

    Reply
    1. HOW!? It’s the only fuel available in most places unless you live near a boat dock or a Sheetz and even then all you can find is 90 octane. If you think your car is designed to run on corn or water (AKA “ethanol”), you’re wrong. What ethanol is doing is falsely raising the octane level of cheap fuel because ethanol is harder to combust. It’s goal is not efficiency or reducing emissions – it does neither – it’s a needlessly destructive scam.

      As for ‘just don’t use it in your car’ – people need ethanol free fuel for a million other things from generators, to lawn mowers, to motorcycles and even cement trowels. Most people aren’t smart enough to know that and end up having all kinds of unnecessary problems caused by ethanol that end up costing money to repair that they shouldn’t have to spend. For what? Another scam disguised as environmentalism?

      Ethanol should be banned entirely.

      Reply
  9. Ethanol blended gas used to be called “gasohol” during the second oil crisis in 1979. It was a cheaper option -about 10 cents per gallon- option for 100 percent petroleum. Now you have to pay $1 more a gallon to get pure petrol!

    Reply

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