2026 GMC AT4 Ultimate AT4 Ultimate

heavy-duty

220 amps (Standard with (L87) 6.2L EcoTec3 V8 engine only.)

730 cold-cranking amps (Standard with (L87) 6.2L EcoTec3 V8 engine only.)

4-wheel antilock, 4-wheel disc with DURALIFE rotors

extra capacity (Deleted when (LZ0) Duramax 3.0L Turbo-Diesel engine is ordered.)

auxiliary external transmission oil cooler, heavy-duty air-to-oil

external engine oil cooler, heavy-duty air-to-oil integral to driver side of radiator (Deleted when (LZ0) Duramax 3.0L Turbo-Diesel engine is ordered.)

electronic limited-slip (eLSD)

stop/start system disable button, non-latching

6.2L EcoTec3 V8 with Dynamic Fuel Management, Direct Injection and Variable Valve Timing, includes aluminum block construction (420 hp [313 kW] @ 5600 rpm, 460 lb-ft of torque [624 Nm] @ 4100 rpm)

dual system with dual twin polished stainless-steel tips

gasoline, E15 (Standard with (L87) 6.2L EcoTec3 V8 engine only.)

7700 Lbs. (3493 kg)

push-button

3.23 ratio

Red, horizontal-mounted

front

power

Air Ride Adaptive

front coil-over-shock with stabilizer bar

Magnetic Ride Control

rear multi-link with coil springs

integrated

heavy-duty includes trailering hitch platform, 7-wire harness with independent fused trailering circuits mated to a 7-way connector and 2 trailering receiver

active, 2-speed electronic Autotrac with rotary controls, includes neutral position for dinghy towing

10-speed automatic electronically controlled with overdrive, includes Traction Select System including tow/haul (Standard with (L87) 6.2L EcoTec3 V8 engine only.)

rear

tri-zone automatic climate control with individual climate settings for driver, right front passenger and rear seat occupants

pollutant and fine dust

front passenger A-pillar and second row outboard B-pillar

overhead, driver and front passenger located in headliner

Bose 18-speaker Surround with CenterPoint

16.8 diagonal Premium GMC Infotainment System with high contrast display and local backlight dimming, with Google built-in compatibility, including navigation capability, color touch-screen, multi-touch display, connected apps, personalized profiles for each driver's settings, and Natural Voice Recognition

floor, power-sliding center with drawer, secure storage, manual sliding armrest and cup holders for second row; deletes (UBC) 2 USB charge/data ports within center console

rear-window electric

automatic occupant sensing

power programmable with lockout protection

11 diagonal multi-color digital high-contrast display with local backlight dimming

color-keyed carpeting

color-keyed carpeted first and second row, removable (Premium AT4/AT4 Ultimate-specific. Deleted when LPO floor mats or LPO floor liners are ordered.)

15 diagonal multi-color

interior with dome light driver- and passenger-side door switch with delayed entry feature, cargo lights, door handle or Remote Keyless Entry-activated illuminated entry and map lights in front and second seat positions

Sport Pedal Cover Kit (dealer-installed)

2, 120-volt located on the rear of the center console and rear cargo area

inside rearview auto-dimming with full camera display

two Bluetooth headphones with 2 HDMI ports on the back of the center console

driver 4-way power lumbar

driver 8-way power

front passenger 4-way power

front passenger 8-way power

Full Grain Leather

driver 2-way power upper shoulder and 2-way power back bolster

driver power massage

front passenger 2-way power upper shoulder and 2-way power back bolster

front passenger power massage

front bucket

heated and ventilated driver and front passenger perforated

heated driver and front passenger

heated second row, outboard positions

second row bucket, power release

third row 60/40 split-bench, power-folding

glass breakage

vehicle inclination will detect vehicle being towed or jacked up

vehicle interior movement will detect movement within the cabin of the vehicle

bright, front and rear doors (AT4/AT4 Ultimate-specific with logo.)

visit www.siriusxm.com which includes full terms and how to cancel. All fees, content, features, and availability are subject to change. Some features require GM connected vehicle services.)

electrical

power tilt and telescopic

Driver Information Center, Adaptive Cruise Control, Forward Collision Alert following gap button and heated steering wheel

heated

leather-wrapped, 4-spoke

includes automatic lane changing and trailering capability (Includes a 3-Year trial.)

content theft alarm self-powered horn

electrical, unauthorized entry

programmable

2 type-A and C, charge and data, located on front console

2 type-C, charge-only, located in third row

driver and front passenger illuminated vanity mirrors

driver and right-front passenger seat belt unfasten and turn signal on

power with driver Express-Up/Down

power with front passenger Express-Up/Down

power, rear with Express-Down

for portable devices

upper

power-retractable with perimeter lighting

presence detection

body-color

front high-approach angle

front LED

acoustic, laminated windshield

deep-tinted

driver and front passenger laminated front door window

windshield shade band

LED, with LED Daytime Running Lamps includes enhanced animation

Wheel locks, set of 4 (dealer-installed) (Deleted when any 22 or 24 LPO wheels are ordered. Note that LPO 22 or 24 wheels will come with wheel locks without the LPO code (SFE). Not available with (SPZ) Black wheel locks, LPO.)

roof-mounted, Black

painted (Gloss Black.)

outside heated power-adjustable, power-folding driver-side auto-dimming, integrated turn signal indicators and puddle lighting

power Panoramic, dual-pane, tilt-sliding with express-open and close and power sunshade

LED includes animated lighting

lockable outside spare winch-type mounted under frame at rear

spare P265/70R17 all-season, blackwall

275/60R20SL all-terrain, blackwall

full-size spare, 17 (43.2 cm) steel

20 x 9 (50.8 cm x 22.9 cm) machined and painted Talos Bronze Metallic

rear intermittent

front intermittent, Rainsense

WI-FI, and In-Vehicle Apps, all connected by OnStar. Info at OnStar.com/Plans. After initial 3-year period, requires paid OnStar plan. OnStar services vary by vehicle and model and require an active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations. Terms apply.)

Frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Driver inboard seat-mounted side-impact airbag; Head-curtain airbags for all rows in outboard seating positions (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's manual for more information.)

can be turned on and off in Settings or Teen Driver menu

rear child security, manual

applying limited braking, as well as shifting gears into a detected parallel or perpendicular parking space

Pan/Zoom

automatic high beam on/off

braking

for child safety seats lower anchors and top tethers located in all second row seating positions, top tethers located in third row seating positions

built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (OnStar Basics includes remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)

stability control system with brake assist includes traction control and electronic trailer sway control

to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver

auto learn includes Tire Fill Alert (does not apply to spare tire)