






















Monday | 8:00am - 6:00pm |
Tuesday | 8:00am - 6:00pm |
Wednesday | 8:00am - 6:00pm |
Thursday | 8:00am - 6:00pm |
Friday | 8:00am - 6:00pm |
Saturday | 9:00am - 3:00pm |
Sunday | Closed |
Monday | 8:00am - 5:30pm |
Tuesday | 8:00am - 5:30pm |
Wednesday | 8:00am - 5:30pm |
Thursday | 8:00am - 5:30pm |
Friday | 8:00am - 5:30pm |
Saturday | Closed |
Sunday | Closed |
Monday | 8:00am - 5:30pm |
Tuesday | 8:00am - 5:30pm |
Wednesday | 8:00am - 5:30pm |
Thursday | 8:00am - 5:30pm |
Friday | 8:00am - 5:30pm |
Saturday | 9:00am - 12:00pm |
Sunday | Closed |
Monday | 8:00am - 5:00pm |
Tuesday | 8:00am - 5:00pm |
Wednesday | 8:00am - 5:00pm |
Thursday | 8:00am - 5:00pm |
Friday | 8:00am - 5:00pm |
Saturday | Closed |
Sunday | Closed |
Monday | 8:00am - 6:00pm |
Tuesday | 8:00am - 6:00pm |
Wednesday | 8:00am - 6:00pm |
Thursday | 8:00am - 6:00pm |
Friday | 8:00am - 6:00pm |
Saturday | 9:00am - 3:00pm |
Sunday | Closed |
Monday | 8:00am - 5:30pm |
Tuesday | 8:00am - 5:30pm |
Wednesday | 8:00am - 5:30pm |
Thursday | 8:00am - 5:30pm |
Friday | 8:00am - 5:30pm |
Saturday | Closed |
Sunday | Closed |
Monday | 8:00am - 5:30pm |
Tuesday | 8:00am - 5:30pm |
Wednesday | 8:00am - 5:30pm |
Thursday | 8:00am - 5:30pm |
Friday | 8:00am - 5:30pm |
Saturday | 9:00am - 12:00pm |
Sunday | Closed |
Monday | 8:00am - 5:00pm |
Tuesday | 8:00am - 5:00pm |
Wednesday | 8:00am - 5:00pm |
Thursday | 8:00am - 5:00pm |
Friday | 8:00am - 5:00pm |
Saturday | Closed |
Sunday | Closed |
Adventure‑ready and heavy‑duty capable, the 2025 GMC Sierra 2500HD AT4 combines off‑road toughness with premium upgrades. With enhanced suspension, rugged styling cues, and proven powertrain options, this truck is built to tackle remote job sites and back‑country trails in comfort and confidence.
6.6 L V8 gas engine delivering 401 hp and 464 lb‑ft of torque (optional Duramax® Turbo‑Diesel V8 available with 470 hp/975 lb‑ft)
Heavy‑duty 6‑speed automatic transmission
Standard 4WD with two‑speed transfer case, automatic locking rear differential, and off‑road drive mode
Factory‑tuned off‑road suspension with Rancho® monotube shocks and skid plates
Towing capability up to 18,000 lb (diesel) or 14,500 lb (gas), and payload over 3,000 lb
AT4‑exclusive black mesh grille, red tow hooks, and satin‑black badging
18″ black aluminum wheels wrapped in all‑terrain tires
LED projector headlamps, fog lamps, and signature taillamps
Power‑deployable tubular side steps with integrated lighting
CornerStep rear bumper, spray‑in bedliner, and factory gooseneck/5th‑wheel prep package
Jet‑Black leather‑appointed front seats with red contrast stitching and AT4 embroidery
Heated and ventilated front seats, heated rear outboard seats, and heated leather‑wrapped steering wheel
Dual‑zone automatic climate control and power‑adjustable pedals
Spacious Crew Cab layout with fold‑flat rear bench, in‑floor storage, and large center console
Remote start, keyless entry, and auto‑dimming rearview mirror
13.4″ diagonal GMC Premium Infotainment touchscreen with navigation
12.3″ digital driver information display featuring Off‑Road pages and performance readouts
Wireless Apple CarPlay® and Android Auto™; available Wi‑Fi hotspot
HD Surround Vision camera system, trailering camera views, and Bed View camera
Full GMC Pro Safety Plus suite, including adaptive cruise control, lane‑keep assist, blind‑zone steering assist, and forward collision alert