8,107 New GMC Sierra for Sale Near O Fallon, MO

There are 8,107 new GMC Sierra listings for sale from 219 dealerships, priced from $30,280 to $124,382.

The median asking price for a new GMC Sierra is $67,028. Listings range from $30,280 to $124,382. The average mileage is 110 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 8,107 listings.

The GMC Sierra is available in the following trim levels:

• GMC Sierra SLT 4WD Crew Cab Short Box for sale1,459 listings
• GMC Sierra Denali 4WD Crew Cab Short Box for sale889 listings
• GMC Sierra Elevation 4WD Crew Cab Standard Box for sale802 listings
• GMC Sierra Denali 4WD Crew Cab Standard Box for sale704 listings
• GMC Sierra AT4 4WD Crew Cab Short Box for sale632 listings
• GMC Sierra AT4 4WD Crew Cab Standard Box for sale625 listings
• GMC Sierra Pro 4WD Crew Cab Standard Box for sale395 listings
• GMC Sierra SLT 4WD Crew Cab Standard Box for sale393 listings
• GMC Sierra Denali Ultimate 4WD Crew Cab Standard Box for sale344 listings
• GMC Sierra Denali Ultimate 4WD Crew Cab Short Box for sale207 listings