8,179 New GMC Sierra for Sale Near O Fallon, MO

There are 8,179 new GMC Sierra listings for sale from 220 dealerships, priced from $30,280 to $124,382.

The median asking price for a new GMC Sierra is $66,856. Listings range from $30,280 to $124,382. The average mileage is 107 miles.

The lowest-priced listing is a 2026 GMC Sierra Pro 2WD Regular Cab Long Box at $30,280 with 4 miles in Independence, MO.

New GMC Sierra inventory spans model years 2024 to 2026. The 2024–2028 model years are the most available, with 8,179 listings.

The GMC Sierra is available in the following trim levels:

• GMC Sierra SLT 4WD Crew Cab Short Box for sale1,484 listings
• GMC Sierra Denali 4WD Crew Cab Short Box for sale882 listings
• GMC Sierra Elevation 4WD Crew Cab Standard Box for sale807 listings
• GMC Sierra Denali 4WD Crew Cab Standard Box for sale702 listings
• GMC Sierra AT4 4WD Crew Cab Short Box for sale635 listings
• GMC Sierra AT4 4WD Crew Cab Standard Box for sale630 listings
• GMC Sierra Pro 4WD Crew Cab Standard Box for sale390 listings
• GMC Sierra SLT 4WD Crew Cab Standard Box for sale390 listings
• GMC Sierra Denali Ultimate 4WD Crew Cab Standard Box for sale343 listings
• GMC Sierra Denali Ultimate 4WD Crew Cab Short Box for sale205 listings