What is the GMC AT4 Trim?
In Eastern Iowa, the best adventures often start where the pavement ends. Whether you’re heading to a hunting spot north of town, navigating ice‑coated back roads after a winter storm, or towing your boat to the lake for a quiet morning of fishing, you need a vehicle that’s as rugged as it is refined. That’s exactly what the GMC AT4 trim delivers.
Available on our most popular trucks and SUVs here at Community Buick GMC in Waterloo, the AT4 represents GMC’s commitment to building vehicles that are ready for the trail without sacrificing premium comfort. Positioned as the off‑road authority in the GMC lineup, it combines serious capability with the upscale features your family expects. All‑Terrain 4‑Wheel Drive designed for drivers across Iowa who value both open roads and the path less traveled.
AT4 at a glance
- ✓ AT4 = All-Terrain 4WD – factory‑built off‑road
- ✓ 2″ factory lift + off-road suspension
- ✓ Skid plates + red recovery hooks
- ✓ Dark chrome / black trim & exclusive badging
- ✓ Two‑speed Autotrac + automatic locking rear diff
- ✓ Premium interior with ventilated leather seats
- ✓ Available on Sierra, Canyon, Yukon, Acadia & more
- ✓ Optional AT4X for extreme trails
How does the GMC AT4 stand out?
The AT4 is more than just a nameplate. It comes straight from the factory with purpose‑built enhancements engineered to keep you in command when the road disappears. From gravel roads to muddy trails, every component is chosen to perform when you need it most.
- 🔹 Dark chrome & red hooks – distinct AT4 face
- 🔹 2″ lifted suspension + Rancho® monotubes (Sierra)
- 🔹 Skid plates protect transfer case & oil pan
- 🔹 Two-speed Autotrac / locking rear diff
- 🔹 Off-Road drive mode – optimized for mud, gravel, snow
- 🔹 Kalahari interior accents + ventilated front seats
- 🔹 13.4″ Google built‑in / 12.3″ driver display
2026 GMC AT4 family
*All prices are MSRP and do not include destination, taxes or fees. See dealer for details.
2026 Sierra 1500 AT4*$66,800 |
2026 Sierra 1500 AT4X*$86,310 |
2026 Canyon AT4*$45,400 |
2026 Canyon AT4X*$57,200 |
2026 Acadia AT4*$52,300 |
2026 Sierra 2500HD AT4*$71,600 |
2026 Sierra 2500HD AT4X*$83,700 |
2026 Yukon AT4*$76,000 |
2026 Yukon AT4 Ultimate*$97,300 |
2026 Sierra EV AT4*$79,300 |
2026 Yukon XL AT4*$76,600 |
2026 Yukon XL AT4 Ultimate*$97,900 |
AT4 trims currently available
Sierra 1500 AT4
3.0L Duramax diesel or 6.2L V8 · 10‑spd auto · 2″ lift · Rancho shocks · 13.4″ Google screen · up to 13,000 lb towing.
Canyon AT4
2.7L Turbo (310 hp) · locking rear diff · skid plates · off-road suspension · hill descent control.
Yukon AT4
Seats 8 · Air ride adaptive suspension · skid plates · two-speed transfer case · premium interior with Kalahari accents.
Acadia AT4
Available AWD · Active torque control · 7‑passenger · 4,000 lb towing · Off-Road drive mode · rugged styling.
Considering the GMC AT4X?
For those who take off‑roading to the next level, the AT4X builds on the AT4 foundation with even more capability. You’ll find front and rear electronic locking differentials, heavy‑duty skid plates, a 2″ suspension lift with Multimatic DSSV dampers, AEV steel bumpers, and off‑road rock lights. Available on Sierra HD, Canyon, and Yukon.
GMC AT4 – quick answers
What does AT4 stand for?
All-Terrain 4‑wheel drive. It’s GMC’s premium off-road trim with factory lift, skid plates, all-terrain tires, and unique styling.
Which GMC models offer AT4?
Sierra 1500, Sierra HD, Canyon, Acadia, Yukon, Yukon XL, and Sierra EV. Also available in AT4X variants for extreme off-road.
AT4 vs AT4X: what’s the difference?
AT4X adds front & rear e-lockers, Multimatic DSSV dampers, unique skid plates, AEV components, and even more aggressive off-road hardware.
Is the AT4 good for Iowa winters?
Absolutely. Autotrac 4WD, hill descent control, and available heated leather seats make it perfect for Waterloo ice and snow.
Can I get an AT4 with three rows?
Yes. GMC Yukon AT4 and Acadia AT4 both offer three rows, seating up to 8 or 7 passengers.
Does Community Buick GMC have AT4 in stock?
Yes, we regularly stock AT4 trucks and SUVs. Check our online inventory or visit us at 4030 Lowe’s Blvd, Waterloo.
Your AT4 Awaits at Community Buick GMC
Whether you need a truck that can handle the job site or an SUV ready for weekend adventures, GMC’s AT4 lineup delivers rugged capability with premium comfort. Stop by our Waterloo location to see the full AT4 family in person. We’re here to help you find the perfect match.
Community Buick GMC – 4030 Lowe’s Blvd, Waterloo, IA 50701