2026 GMC Sierra 3500HD

Listed by a franchise dealer in Longmont, CO · On lot for 33 days · VIN verifiable at NHTSA

This new 2026 GMC Sierra 3500HD Denali Ultimate is listed at $106,755 by mike maroone auto in Longmont, CO 80504. It has 34 miles on the odometer. It features a 4WD drivetrain with a 6.6L V8 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Fair Price — priced at market value. Based on 37 similar vehicles in the Longmont market, the estimated market range is $96,969 to $108,584.

This vehicle has been on the lot for 33 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).

Market context

This listing is part of OAV's broader Longmont, CO trucks market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

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How this deal is rated

OAV compares this 2026 GMC Sierra 3500HD against similar vehicles currently available in the local and regional market — same make, model, and year range, filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

• Great Deal — priced below the typical range for comparable vehicles.
• Fair Price — priced within the expected range for comparable vehicles.
• Overpriced — priced above the typical range for comparable vehicles.

Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Longmont, CO, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GT4UYEY5TF311783 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.

Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is updated daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2026 GMC Sierra 3500HD Market in CO

Based on 313 comparable 2024-2028 GMC Sierra 3500HD listings in CO, the average asking price is $80,185. This listing at $106,755 is $26,570 above average (33% above market). Comparable prices in CO range from $44,401 to $108,584. Similar vehicles spend an average of 50 days on dealer lots in this market.

Similar GMC Sierra 3500HD Listings in CO

8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: Denali Ultimate — compare trims below)