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?
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?
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 |
- 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.
Comments
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.
I only use non ethanol gas in all my cars
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.
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”.
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.
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.
Nice to finally see some useful information for a change, thank you.
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.
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.
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.
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.
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.
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!