GMC Sierra 3500 HD Price in Saint Louis, MO

As of September 17, 2026, there are 26 GMC Sierra 3500 HD vehicles available at 2 dealerships in Saint Louis, MO. Local dealers are pricing competitively — the average selling price is $3,954 below MSRP, with 96% of inventory at or under sticker. 2 of 2 dealers are currently pricing below MSRP on average. Prices range from $56,080 to $88,218, with a median of $68,611.

Across Missouri (149 listings) the average is $2,351 below MSRP (94% at/below MSRP) — Saint Louis is priced about $1,603 cheaper than Missouri as a whole. See the Sierra 3500 HD in Missouri overview. These are advertised prices — a negotiated deal (incentives, dealer discounts) often beats them.