RAM 1500 vs GMC Sierra 2500HD

Sitting at the top of the Sierra’s six available trims, the Denali Ultimate is newly added for the 2024 model year and comes with nearly every available option that can be included on this full-size truck.

The Denali Ultimate trim level is offered on both the 2500 and 3500 HD models. Each provides a higher degree of towing and payload capacity than what’s available in the standard GMC Sierra 1500. To put it bluntly, the Sierra HD models are pickup overkill for anyone simply looking to tow a couple of jet skis or haul a moderately-sized camper. The “HD” in the name stands for “Heavy Duty,” and its capabilities (and price) reflect this.

Powered exclusively by a 6.6-liter turbocharged Duramax diesel V8, the HD Denali Ultimate we test drove has a maximum towing capacity of 22,500 pounds—a 4,000 pound increase versus the 2023 model. Need to tow something along the lines of construction equipment or, say, a small island? Stepping up to the Sierra 3500 HD equates to a max tow rating of 36,500 pounds when using a gooseneck trailer hitch.

Okay, so the Sierra HD lineup has serious chops for getting tough tasks done. But how does it stack up against the competition? Hop aboard as we take a look at every aspect of the HD Denali Ultimate, from how it drives, to the user-friendliness of its infotainment system, trailer tech, and whether this new top-of-the-range trim is worth the price.

The Hemi V8 is back for the 2026 model year and now marked by what Ram calls a “Symbol of Protest” badge. As much as we’d like to say it’s better than ever, it’s actually the same as it’s ever been. The 5.7-liter Hemi spins out 395 horsepower and 410 pound-feet of torque, well below the less-expensive Hurricane turbocharged inline-six’s 420 hp and 469 lb-ft, and way behind the optional High Output Hurricane engine’s 540 hp and 521 lb-ft. But the fact that it’s an option at all will be enough to entice some buyers back to the Ram fold.

Verdict: There’s a lot to like about the 2026 Ram 1500, including its characterful Hemi V8. But if you’re looking for the best version of Ram’s popular pickup, you should think long and hard about how you plan to use the truck. With 10 trim levels and two cab sizes and bed lengths to go along with its four powertrain choices, there are plenty of ways to configure a Ram truck to your exact needs.