461 New GMC Sierra for Sale Near Gillette, WY

There are 461 new GMC Sierra listings for sale from 17 dealerships, priced from $40,195 to $109,864.

The median asking price for a new GMC Sierra is $72,700. Listings range from $40,195 to $109,864. The average mileage is 243 miles.

The lowest-priced listing is a 2026 GMC Sierra Pro 4WD Regular Cab Standard Box at $40,195 in Casper, WY.

New GMC Sierra inventory spans model years 2025 to 2026. The 2025–2029 model years are the most available, with 461 listings.

The GMC Sierra is available in the following trim levels:

• GMC Sierra SLT 4WD Crew Cab Short Box for sale61 listings
• GMC Sierra Denali 4WD Crew Cab Short Box for sale45 listings
• GMC Sierra AT4 4WD Crew Cab Short Box for sale41 listings
• GMC Sierra Elevation 4WD Crew Cab Standard Box for sale31 listings
• GMC Sierra Denali 4WD Crew Cab Standard Box for sale29 listings
• GMC Sierra SLT 4WD Crew Cab Standard Box for sale28 listings
• GMC Sierra AT4 4WD Crew Cab Standard Box for sale24 listings
• GMC Sierra AT4X 4WD Crew Cab Short Box for sale21 listings
• GMC Sierra Elevation 4WD Crew Cab Standard Box 3VL for sale14 listings
• GMC Sierra AT4 4WD Crew Cab Long Box for sale13 listings