2024 GMC AT4 AT4

Dealership Vehicle Description
Performance & Specs
Interior
Exterior
Safety

This powerful 2024 GMC Sierra 2500HD AT4 delivers rugged capability with premium comfort. Built on the Duramax 6.6L V8 Turbodiesel engine paired with a 10-speed automatic transmission and 4WD, this truck is engineered for demanding work and weekend adventures. The silver exterior commands attention, while the AT4 Premium Plus Package elevates your driving experience with premium features and refined styling.

Key Features:
- Duramax 6.6L V8 Turbodiesel Engine with 220-Amp Alternator and Engine Block Heater
- Gooseneck/5th Wheel Prep Package with hitch platform for heavy towing
- Power-Retractable Black Assist Steps and GMC MultiPro Tailgate Step Lights
- Heated and Ventilated Leather-Appointed Front Seats with 10-Way Power Adjustment
- Premium Bose 7-Speaker Sound System with SiriusXM 360L and Apple CarPlay/Android Auto
- Advanced Safety Suite: Automatic Emergency Braking, Lane Departure Warning, Rear Cross Traffic Alert
- Bed View Camera with Trailer Camera Provisions and Integrated Trailer Brake Controller
- Off-Road Suspension with Hill Descent Control and 2-Speed Active Transfer Case
- Wireless Phone Projection and Charging Pad
- Spray-On Bedliner with AT4 Logo and Rear Underseat Storage

This AT4 combines work-ready durability with technology and comfort that define modern truck ownership. The truck's comprehensive suite of safety systems, advanced camera views, and trailering capabilities make it equally at home on the job site or the open road. Schedule your test drive today to experience the power and refinement of this exceptional Sierra 2500HD.

To be sure you don't miss out, give us a call at 512-643-1534 and schedule a test drive. We are located at 3000 N Interstate Hwy 35 Round Rock TX 78681. We look forward to seeing you soon.

Price does not include tax, title, license, registration, dealer documentary fee, or dealer installed accessories

Air filter
heavy-duty
Air filtration monitoring
Alternator
170 amps (Requires (L8T) 6.6L V8 gas engine.)
Auto-locking rear differential
Battery
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.)
Brake lining wear indicator
Brakes
4-wheel antilock, 4-wheel disc with DURALIFE rotors
Cooling
auxiliary external transmission oil cooler
Cooling
external engine oil cooler
Engine
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)
Four wheel drive
Frame
fully-boxed, hydroformed front section and a fully-boxed stamped rear section
GVWR
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.)
Hill Descent Control
In-Vehicle Trailering App
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.)
Pickup bed includes bed assist step
Push Button Start
Rear axle
3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Recovery hooks
Red
Skid Plates protect the oil pan
front axle and transfer case
Steering
Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
Suspension
Off-Road includes twin-tube shocks
Trailer brake controller
integrated
Transfer case
two-speed active, electronic Autotrac with push button control
Transmission
Allison 10-Speed automatic

Air conditioning
dual-zone automatic climate control
Air vents
rear
Assist handles front A-pillar mounted for driver and passenger
rear B-pillar mounted
Audio System
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
Bluetooth for phone connectivity to vehicle infotainment system
Bose Sound System
premium 7-speaker system with Richbass woofer
Center Console
floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
Compass
located in instrument cluster
Cruise control
steering wheel-mounted
Defogger
rear-window electric
Door locks
power
Driver Information Center
enhanced, 12.3 diagonal reconfigurable multicolor digital display
Driver memory recalls driver presets for power driver seat and outside mirrors
Exterior Temperature Display
located in radio display
Floor covering
color-keyed carpeting
GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
GMC Premium information Display- 13.4 diagonal Multicolor touch screen
Keyless Open and Start includes remote keyless entry
Mirror
inside rearview auto-dimming
Power outlet
bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
Power outlet
instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
Premium Floor Liners with removable carpet insert
front
Premium Floor Liners with removable carpet insert
rear
Rear Seat Reminder
Remote vehicle starter system
Seat adjuster
driver 10-way power including lumbar
Seat adjuster
passenger 10-way power including lumbar
Seat trim
Perforated front Leather
Seat
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)
Seating
heated driver and front outboard passenger
Seats
front bucket with center console
Seats
heated second row outboard seats
Seats
ventilated driver and front passenger
SiriusXM enjoy a Platinum Plan trial subscription
SiriusXM with 360L includes a trial subscription to the Platinum Plan. Experience more channels in the vehicle
a more personalized experience and easier navigation. (IMPORTANT: The SiriusXM trial package is not provided on vehicles that are ordered for Fleet Daily Rental (FDR) use. Trial subscription subject to the SiriusXM Customer Agreement and privacy policy, 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.)
Steering column
manual Tilt-Wheel and telescoping (Included and only available with (PCQ) SLE Convenience Package.
Steering wheel audio controls
Steering wheel
heated
Steering wheel
wrapped
Theft-deterrent system
unauthorized entry
USB ports
(2) charge-only, rear
USB Ports
2 (first row) located on console
USB Ports
2, Charge/Data ports located inside center console
Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Window
power front, passenger express up/down
Windows
power front, drivers express up/down
Windows
power rear, express down
Wireless Charging
Wireless Phone Projection for Apple CarPlay and Android Auto

Bed Step
Black integrated on forward portion of bed on driver and passenger side
Bedliner
Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo. Available with Ship Thru code (SQE), not available with any other Ship Thru code.)
Bumper
front, body-color lower
Bumper
rear body-color with bumper CornerSteps
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
Cargo tie downs (12)
fixed, rated at 500 lbs per corner
CornerStep
rear bumper
Door handles
body-color
Fog lamps
LED
Glass
deep-tinted
Grille (Gloss Black header and grille insert bars with Black Chrome accents.)
Headlamps
Animated LED projectors LED turn signals and Daytime Running Lamps
IntelliBeam
automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
Lamps
cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
Mirror caps
high gloss Black
Mirrors
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
Moldings
beltline, Black
Tailgate and bed rail protection caps
top
Tailgate
gate function manual with EZ Lift includes power lock and release, includes hitch area light
Tailgate
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
Taillamps
Animated LED Signature Tail, Stop, turn and Reverse lamps
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Tire
spare LT275/70R18 all-terrain, blackwall
Tires
LT275/65R20 all-terrain, blackwall
Wheelhouse liners
rear
Wheels
20 (50.8 cm) High Gloss black aluminum wheels 8 spokes
Wipers
front rain-sensing

3 Years of OnStar Remote Access. The OnStar Remote Access Plan gives you simplified remote control of your properly equipped vehicle and unlocks a variety of great features in your myGMC mobile app. See dealer for details. (OnStar Remote Access Plan does not include emergency or security services. Fleet customers will get Fleet Remote Access through OnStar Vehicle Insights. See onstar.com for details and limitations. Available on select Apple and Android devices. Service availability
features and functionality vary by vehicle, device, and the plan you are enrolled in. Terms apply. Device data connection required.)
Airbags
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.)
Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
Bed View Camera
camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera Provisions
Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety.)
Daytime Running Lamps
LED signature lighting
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
Front and Rear Park Assist
ultrasonic
Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
HD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a center stack display. Includes front camera washer.
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Hitch Guidance with Hitch View with image adjustment
Pan/Zoom/Tilt
Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
LED Signature DRL's
OnStar and GMC Connected Services capable (Terms and limitations apply. See onstar.com or dealer for details.)
Rear Cross Traffic Alert
Rear Seat Belt Indicator
Safety Alert Seat
Seat Belt Adjustable Guide Loops
front row only
StabiliTrak
stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob
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
Tire Pressure Monitoring System
auto learn includes Tire Fill Alert (does not apply to spare tire)
Trailer Camera Provisions and trailer viewing software
Trailer Side Blind Zone Alert
Trailering Information Label provides max trailer ratings for tongue weight
conventional, gooseneck and 5th wheel trailering