Hi... I bought a 2025 GMC Sierra 1500 Denali Ultimate Duramax and overall, I love the truck. It's an absolute joy to drive, and the engine is fantastic...
Tags: chevy, Chevy Montana LS, Chevy Montana Sport, Compact Pickup, Montana Brett Foote Brett Foote has been covering the automotive industry for over five years and is a longtime contributor to Internet Brands’ Auto Group sites, including Chevrolet Forum, Rennlist, and Ford Truck Enthusiasts, among other popular sites.
A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!
What did Chevy do to ruin a perfectly good engine? I had a 2020 and was getting 18mpg mixed fuel mileage. My new 2025 with same engine, transmission and rear end is getting 14.5 with same driving habits. DId the EPA make them choke these motors down even more? BTW, my 2020 was getting better...
