2025 GMC Sierra 3500 AT4
CarBuyingTips Insights
Before you make an offer
Dealer cost — not sticker — is the number that matters. Our free spreadsheet works it out for you in about ten minutes.
Calculate true dealer cost
$77,499
UsedBelow MSRP
$1,200 below the MSRP of $78,699
On the market 12 days
Castle Rock Chevrolet GMC
1506 S Wilcox St, Castle Rock, CO
Stock #SF336412C
CarBuyingTips does not sell cars. Listings come from dealer inventory feeds and prices change often — always confirm with the seller.
Specifications
- Year
- 2025
- Make
- GMC
- Model
- Sierra 3500
- Trim
- AT4
- Body style
- Truck
- Mileage
- 7,827 mi
- Engine
- 6.6L 8-cylinder
- Horsepower
- 401 hp
- Torque
- 464 lb-ft
- Cylinders
- 8
- Transmission
- Automatic
- Drivetrain
- 4WD
- Fuel
- Diesel
- Doors
- 4
- Seats
- 5
- Interior color
- Black
- MSRP
- $78,699
- VIN
- 1GT4UVEY0SF336412
Price history
| Date | Listed price |
|---|---|
| Aug 27, 2026 | $77,499 ↓ |
| Aug 24, 2026 | $78,499 ↓ |
| Aug 21, 2026 | $78,699 |
Before you buy this GMC
- Get the VIN checked before you go. A clean history report is the cheapest insurance you can buy. Vehicle history reports
- Arrange your own financing first so the finance office has to beat a rate, not set one. Car loan guide
- Know the 10 dealer scams that happen after you agree on price. Top 10 dealer scams
- Never discuss a trade-in until the purchase price is locked. Trade-in tips