2025 GMC Sierra
Denali Ultimate 4WD
What the Denali Ultimate adds over the Pro
| Spec | Pro | Denali Ultimate |
|---|---|---|
| Curb weight (maximum) | 4500 lbs | 5350 lbs |
| Curb weight (minimum) | 4410 lbs | 5300 lbs |
| Aspiration | twin turbo | naturally aspirated |
| Cylinder count | 4 | 8 |
| Engine displacement | 2700 cc | 6200 cc |
| Horsepower | 310 hp | 420 hp |
| Torque | 430 lb-ft | 460 lb-ft |
| Engine type (full description) | 2.7L Turbo DOHC VVT DI with Active Fuel Management | 6.2L V-8 VVT DI with Dynamic Fuel Management |
| Valve configuration | Dual-overhead camshafts, four-valves per cylinder | Overhead valve, two valves per cylinder |
| Fuel tank capacity | 28.3 gal | 24 gal |
| Gross vehicle weight rating | 6800 lbs | 7300 lbs |
| Front headroom | 43.1 in | 43 in |
| MPG (city) | 19 mpg | 16 mpg |
| MPG (highway) | 22 mpg | 20 mpg |
| Overall height | 75.7 in | 75.4 in |
| Overall length | 210.9 in | 241.4 in |
| Overall width | 81.1 in | 81.2 in |
| Payload capacity | 2260 lbs | 1760 lbs |
| Front suspension type | Independent coil-over-shock with twin-tube shock absorbers | Independent coil-over-shock with twin-tube shock absorbers; Adaptive Ride Control available |
| Rear suspension type | Solid axle with semi-elliptic, variable-rate, two-stage multileaf springs, splayed twin-tube shock absorbers | Solid axle with semi-elliptic, variable-rate, two-stage multileaf springs, splayed twin-tube shock absorbers; Adaptive Ride Control available |
| Tire size | P255/70R17 | P275/50R22 |
| Transmission speeds | 8 | 10 |
| Wheel diameter | 17 in | 22 in |
| Wheel material | steel | Aluminum |
| Wheel width | 8 in | 9 in |
Standard here, not on the base trim: 6.2L V-8 VVT DI with Dynamic Fuel Management – 420 hp / 460 lb.-ft. torque, Trailer Brake Controller (standard on SLE trim and above)
Specifications
Source: manufacturer press kitBrakes
| Front brake diameter | 330 mm |
| Front brake type | Vented disc |
| Rear brake diameter | 345 mm |
| Rear brake type | Vented disc |
Dimensions Exterior
| Ground clearance | 7.9 in |
| Overall height | 75.4 in |
| Overall length | 241.4 in |
| Overall width | 81.2 in |
| Wheelbase | 157 in |
Engine Basics
| Aspiration | naturally aspirated |
| Cylinder count | 8 |
| Engine displacement | 6200 cc |
| Fuel injection system | gdi mpi |
| Engine type (full description) | 6.2L V-8 VVT DI with Dynamic Fuel Management |
| Valve configuration | Overhead valve, two valves per cylinder |
Engine Output
| Horsepower | 420 hp |
| Torque | 460 lb-ft |
Fuel Economy
| MPG (city) | 16 mpg |
| MPG (highway) | 20 mpg |
Fuel System
| Fuel tank capacity | 24 gal |
Headroom
| Front headroom | 43 in |
| Second-row headroom | 40.1 in |
Legroom
| Front legroom | 44.5 in |
| Second-row legroom | 43.4 in |
Shoulder Room
| Front shoulder room | 66 in |
| Second-row shoulder room | 65.1 in |
Steering
| Steering type | Electric power-assisted rack-and-pinion |
Suspension
| Front suspension type | Independent coil-over-shock with twin-tube shock absorbers; Adaptive Ride Control available |
| Rear suspension type | Solid axle with semi-elliptic, variable-rate, two-stage multileaf springs, splayed twin-tube shock absorbers; Adaptive Ride Control available |
Tires
| Tire size | P275/50R22 |
Transmission
| Final drive ratio | 3.4 |
| Transmission speeds | 10 |
| Transmission type | automatic |
Weights
| Curb weight (maximum) | 5350 lbs |
| Curb weight (minimum) | 5300 lbs |
| Gross vehicle weight rating | 7300 lbs |
| Payload capacity | 1760 lbs |
Wheels
| Wheel diameter | 22 in |
| Wheel material | Aluminum |
| Wheel width | 9 in |
Standard & optional equipment
Source: manufacturer press kitSafety2 std · 0 opt
- Cruise Control (standard on Pro trim)
- Four-wheel disc with electro-hydraulic power assist and ABS
Powertrain3 std · 1 opt
- 10-speed automatic transmission (3.0L, 5.3L and 6.2L)
- 5.3L V-8 VVT DI with Dynamic Fuel Management – 355 hp / 383 lb.-ft. torque
- 6.2L V-8 VVT DI with Dynamic Fuel Management – 420 hp / 460 lb.-ft. torque
- Two-speed transfer case or Autotrac automatic transfer case with 4WD (depending on model) optional
Chassis4 std · 1 opt
- Electric power-assisted rack-and-pinion steering
- Independent coil-over-shock front suspension with twin-tube shock absorbers; Rancho shocks on AT4; Multimatic DSSV dampers on AT4X; Adaptive Ride Control available on Denali
- Solid axle rear suspension with semi-elliptic, variable-rate, two-stage multileaf springs, splayed twin-tube shock absorbers; Rancho shocks on AT4; Multimatic DSSV dampers on AT4X; Adaptive Ride Control available on Denali
- Vented front and rear Duralife™ brake rotors (13 x 1.18 in. front / 13.6 x 0.79 in. rear)
- Adaptive Ride Control (available on Denali) optional
Cargo1 std · 0 opt
- Trailer Brake Controller (standard on SLE trim and above)
Ranked by what shoppers ask about first; standard equipment before options.
Transcribed from the manufacturer's official press kit for the 2025 Sierra. Confirm with the window sticker for a specific unit.
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Common questions about the Denali Ultimate
Source: EPA, NHTSA and manufacturer press kitsWhat does the 2025 GMC Sierra Denali Ultimate add over the Pro?
Against the Pro, 2 features become standard that the Pro does not and 26 published specifications differ. Both lists are on this page, taken from the manufacturer's own press material.