AT4 Ultimate 4WD
What the AT4 Ultimate adds over the Elevation
| Spec | Elevation | AT4 Ultimate |
|---|---|---|
| Horsepower | 355 hp | 420 hp |
| Torque | 383 lb-ft | 460 lb-ft |
| Engine type (full description) | 5.3L V8 | 6.2L V8 |
| Ground clearance | 7.8 in | 8 in |
| Overall height | 76.6 in | 76.3 in |
| Overall length | 210.2 in | 210.5 in |
Standard here, not on the base trim: 20-inch wheels with all-terrain tires (AT4 Ultimate), 6.2L V8 420 HP / 460 lb-ft (Standard on AT4 Ultimate, Denali, Denali Ultimate; Optional on AT4), Four-corner Air Ride Adaptive Suspension (raises vehicle up to 2 inches for improved off-road ground clearance), Front skid plate (AT4 Ultimate), Luxurious Obsidian Rush interior with three rows of full-grain leather seating and Ash Burl wood accents (AT4 Ultimate), New unique leather seat style with open pore wood décor and leather rim steering wheel accents (AT4 Ultimate)
Specifications
Source: manufacturer press kitBrakes
| Front brake diameter | 343 mm |
| Front brake type | Vented disc |
| Rear brake diameter | 345 mm |
| Rear brake type | Vented disc |
Dimensions Exterior
| Ground clearance | 8 in |
| Overall height | 76.3 in |
| Overall length | 210.5 in |
| Overall width | 81 in |
| Wheelbase | 120.9 in |
Engine Basics
| Aspiration | naturally aspirated |
| Cylinder count | 8 |
| Fuel injection system | gdi mpi |
| Engine type (full description) | 6.2L V8 |
| Valve configuration | Overhead valve, two valves per cylinder, variable valve timing |
Engine Output
| Horsepower | 420 hp |
| Torque | 460 lb-ft |
Headroom
| Front headroom | 42.3 in |
| Second-row headroom | 38.9 in |
| Third-row headroom | 38.2 in |
Legroom
| Front legroom | 44.5 in |
| Second-row legroom | 42 in |
| Third-row legroom | 34.9 in |
Shoulder Room
| Front shoulder room | 65.5 in |
| Second-row shoulder room | 64.7 in |
| Third-row shoulder room | 62.7 in |
Steering
| Steering type | Electric power-assisted rack-and-pinion |
Suspension
| Front suspension type | Independent coil-over-shocks and stabilizer bar |
| Rear suspension type | Independent multi-link with coil-over shocks and stabilizer bar |
Tires
| Tire size | 275/60R20 |
Transmission
| Final drive ratio | 3.2 |
| Transmission speeds | 10 |
| Transmission type | automatic |
Weights
| Curb weight (minimum) | 5602 lbs |
Wheels
| Wheel diameter | 20 in |
| Wheel material | Aluminum |
Standard & optional equipment
Source: manufacturer press kitSafety8 std · 5 opt
- Front Pedestrian and Bicyclist Braking
- Rear Cross Traffic Braking
- Trailer Stability Assist
- Electronic Stability Control
- Four-wheel disc with ABS
- Intersection Automatic Emergency Braking
- Side Bicyclist Alert
- Blind Zone Steering Assist (extended to trailer lengths) optional
- Jackknife Alert (tracks trailer position relative to vehicle) optional
- Night Vision with thermal object detection (pedestrian and animal detection via HUD and DIC) optional
- Super Cruise hands-free advanced driver assistance system with hands-free trailering optional
- Transparent Trailer View (tailgate-mounted camera + auxiliary trailer camera) optional
- Trailer Tire Health (Tire Pressure Monitoring with leak detection, tire life monitor and over-speed warning)
Infotainment1 std · 0 opt
- 16.8-inch-diagonal Premium GMC Infotainment Center with vertical interface
Convenience0 std · 1 opt
- Presence-based hands-free liftgate (automatically opens in presence of key fob) optional
Climate0 std · 1 opt
- 8-inch-diagonal rear climate control touchscreen optional
Seating1 std · 0 opt
- New unique leather seat style with open pore wood décor and leather rim steering wheel accents (AT4 Ultimate)
Interior1 std · 0 opt
- Luxurious Obsidian Rush interior with three rows of full-grain leather seating and Ash Burl wood accents (AT4 Ultimate)
Exterior4 std · 1 opt
- 20-in. aluminum wheels (std. Elevation, AT4, Denali, AT4 Ultimate)
- 20-inch wheels with all-terrain tires (AT4 Ultimate)
- Animated headlamps and taillamps
- Front skid plate (AT4 Ultimate)
- Panoramic sunroof optional
Powertrain2 std · 1 opt
- 10-speed automatic transmission
- 6.2L V8 420 HP / 460 lb-ft (Standard on AT4 Ultimate, Denali, Denali Ultimate; Optional on AT4)
- 3.0L Duramax Turbo-Diesel 305 HP / 495 lb-ft – Late Availability (Available on all Trims) optional
Chassis3 std · 0 opt
- Electric power-assisted rack-and-pinion steering
- Four-corner Air Ride Adaptive Suspension (raises vehicle up to 2 inches for improved off-road ground clearance)
- Independent coil-over-shocks and stabilizer bar front suspension; available four-corner air control and Magnetic Ride Control
Cargo1 std · 1 opt
- Max Trailering Capacity: 8,400 lb (Yukon) / 8,200 lb (Yukon XL)
- Trailer Reverse Trajectory (rearward guidelines for trailer path when backing up) optional
Ranked by what shoppers ask about first; standard equipment before options.
Transcribed from the manufacturer's official press kit for the 2026 Yukon. Confirm with the window sticker for a specific unit.
The cheapest ownership win
Insurers price the 2026 Yukon very differently, and the gap between the best and worst quote on the same car and driver is usually larger than any option you are weighing on this page.
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Common questions about the AT4 Ultimate
Source: EPA, NHTSA and manufacturer press kitsWhat does the 2026 GMC Yukon AT4 Ultimate add over the Elevation?
Against the Elevation, 6 features become standard that the Elevation does not and 6 published specifications differ. Both lists are on this page, taken from the manufacturer's own press material.