2026 GMC Sierra 2500HD Denali Ultimate
Unverified
All photo credits
- Photo: 2020 GMC Sierra 2500 Denali HD, Duramax 6.6L, front 2.1.20 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2023 GMC Sierra 2500 Denali HD Ultimate in Titanium Rush Metallic, front right by Ethan Llamas, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2020 GMC Sierra 2500 Denali HD, Duramax 6.6L, rear 2.1.20 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2023 GMC Sierra 2500 Denali HD Ultimate in Titanium Rush Metallic, rear left by Ethan Llamas, CC BY-SA 4.0, via Wikimedia Commons
The 2026 GMC Sierra 2500HD Denali Ultimate is a 470-hp 6.6-liter turbocharged V8 with an allison 10-speed automatic and four-wheel drive. It starts at $94,200 MSRP.
It makes 470 horsepower and 975 lb-ft of torque.
The Sierra 2500HD measures 250.8 inches long on a 159.0-inch wheelbase and has a curb weight of 7,378 lb.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Pickup |
| Powertrain | Diesel |
| Price | |
| MSRP | $94,200 |
| MSRP with Destination | $96,995 |
| Destination Charge | $2,795 |
| Engine | |
| Engine Type | 6.6L Duramax Turbo-Diesel V8 |
| Displacement | 6.6 L |
| Horsepower | 470 hp |
| Torque | 975 lb-ft |
| Drivetrain | |
| Drive Type | 4WD |
| Transmission | |
| Transmission | Allison 10-speed Automatic |
| Fuel Economy | |
| Recommended Fuel | Diesel |
| Tank Capacity | 36 gal |
| Suspension | |
| Front Suspension | Independent, stabilizer bar |
| Brakes | |
| Front Brake Calipers | Ventilated Disc |
| Front Brake Disc | Ventilated disc |
| Rear Brake Disc | Ventilated disc |
| Dimensions & Weight | |
| Length | 250.8 in |
| Width | 81.9 in |
| Height | 79.8 in |
| Wheelbase | 159 in |
| Ground Clearance | 10.1 in |
| Curb Weight | 7,378 lbs |
| Interior | |
| Headroom Front | 43 in |
| Headroom Rear | 40.1 in |
| Legroom Front | 44.5 in |
| Legroom Rear | 43.4 in |
| Shoulder Room Front | 66 in |
| Shoulder Room Rear | 65.3 in |
| Hip Room Front | 61.2 in |
| Hip Room Rear | 60.2 in |
Similar cars
Rivals to the 2026 GMC Sierra 2500HD Denali Ultimate with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
| Overall | Not rated |
| Frontal crash | ★★★★★ |
| Side crash | Not rated |
| Rollover | Not rated |
Other tested variants (5)
- 2026 GMC SIERRA 2500 PU/EC N/A 4WD: overall not rated
- 2026 GMC SIERRA 2500 PU/RC N/A 4WD: overall not rated
- 2026 GMC SIERRA 2500 PU/CC N/A RWD: overall not rated
- 2026 GMC SIERRA 2500 PU/EC N/A RWD: overall not rated
- 2026 GMC SIERRA 2500 PU/RC N/A RWD: overall not rated
Recalls
No recalls on file with NHTSA for the 2026 GMC SIERRA 2500 ICE.
12 owner complaints to NHTSA for the 2026 GMC SIERRA 2500 ICE
Owner Complaints
12 owner complaints filed with NHTSA for the 2026 GMC SIERRA 2500 ICE (1 mention a crash, 1 a fire). See all on nhtsa.gov
| Electrical System | 4 |
| Steering | 3 |
| Service Brakes | 2 |
| Tires | 2 |
| Engine | 1 |
| Fuel/Propulsion System | 1 |
Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2026 GMC SIERRA 2500 ICE. US-market vehicles only; data cached for up to 7 days.