GMC Sierra 2500 HD At4 for Sale
369 resultsCompare current gmc sierra 2500 hd at4 for sale by price, mileage, location, and dealer details.
2025 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
2026 GMC Sierra 2500 HD AT4
Model and trim guide
About the GMC Sierra 2500 HD At4 trim
Dealers use the At4 trim name for these GMC Sierra 2500 HD listings. Equipment can differ by model year and options, so check each listing and window sticker before comparing vehicles.
There are currently 369 matching vehicles.
- Current matches
- 369
- Approved dealer listings
- Advertised prices
- $33,387 - $96,630
- Current listed price range
- Model years
- 2020 - 2026
- Years in current inventory
- Reported mileage
- 0 mi - 152,099 mi
- Odometer range where provided
- Condition mix
- 287 new, 80 used, 1 certified
- Current listing counts
What to compare
Price and dealer terms
Advertised prices may not include taxes, registration, add-ons or dealer fees. Confirm the final price with the dealer.
Year, mileage, and condition
Compare model year, reported mileage, photos, condition details and history information for each vehicle.
Trim and installed equipment
A trim name does not guarantee that two vehicles have the same equipment. Check the drivetrain, packages, options and accessories on the dealer page or window sticker.
Compare the full model
See every current GMC Sierra 2500 HD listing, including other trims.
Browse all GMC Sierra 2500 HD inventory →