2026 GMC AT4 AT4

heavy-duty

170 amps (Requires (L8T) 6.6L V8 gas engine.)

heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)

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

auxiliary external transmission oil cooler

external engine oil cooler

6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm)

fully-boxed, hydroformed front section and a fully-boxed stamped rear section

10,850 lbs. (4921 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18, 20 or 22 wheels.)

System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitor sensors are installed.)

3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)

Red

front axle and transfer case

Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue

Off-Road includes twin-tube shocks

integrated

two-speed active, electronic Autotrac with push button control

10-Speed automatic

dual-zone automatic climate control

rear

rear B-pillar mounted

13.4 diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance includes color touch-screen, multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones

premium 7-speaker system with Richbass woofer

floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability

located in instrument cluster

rear-window electric

power

enhanced, 12.3 diagonal reconfigurable multicolor digital display

located in radio display

color-keyed carpeting

inside rearview auto-dimming

bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)

instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)

front

rear

driver 10-way power including lumbar

passenger 10-way power including lumbar

Perforated front Leather

Up-level Rear with Storage Package 60/40 folding bench, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)

heated driver and front outboard passenger

front bucket with center console

heated second row outboard seats

ventilated driver and front passenger

visit 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.)

manual Tilt-Wheel and telescoping

heated

wrapped

unauthorized entry

(2) charge-only, rear

2 (first row) located on console

2, Charge/Data ports located inside center console

power front, passenger express up/down

power front, drivers express up/down

power rear, express down

Black integrated on forward portion of bed on driver and passenger side

Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Available with Ship Thru code (SQE), (TCE) or (TCH), not available with any other Ship Thru code.)

front, body-color lower

rear body-color with bumper CornerSteps

fixed, rated at 500 lbs per corner

rear bumper

body-color

LED

deep-tinted

Animated LED projectors LED turn signals and Daytime Running Lamps

automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)

cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel

high gloss Black

outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31 [84.25mm]) lighting

beltline, Black

top

gate function manual with EZ Lift includes power lock and release, includes hitch area light

GMC MultiPro Tailgate with six functional load/access features NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for details

Animated LED Signature Tail, Stop, turn and Reverse lamps

spare LT275/70R18 all-terrain, blackwall

LT275/65R20 all-terrain, blackwall

rear

20 (50.8 cm) High Gloss black aluminum wheels 8 spokes

front rain-sensing

Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (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.)

camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera Provisions

LED signature lighting

ultrasonic

Pan/Zoom/Tilt

built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes select 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.)

front row only

stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist

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)

conventional, gooseneck and 5th wheel trailering