Is the $90,785 price on this 2026 GMC Sierra 2500HD a good deal?

OAV rates this as Fair Price because the asking price of $90,785 is within the typical market range for this vehicle.

How long does a 2026 GMC Sierra 2500HD typically stay on dealer lots?

Comparable GMC Sierra 2500HD listings in CO spend an average of 76 days on dealer lots.

Where is this 2026 GMC Sierra 2500HD located?

This vehicle is listed in Longmont, CO 80504. VIN: 1GT4UPEY7TF258255. Mileage: 6 miles.

What is the fair market price range for this 2026 GMC Sierra 2500HD?

OAV's Price-to-Market analysis estimates the fair market range is $73,724 to $91,980, based on 40 comparable listings matched to this vehicle.

2026 GMC Sierra 2500HD AT4 for Sale in Longmont, CO

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Vehicle Details

VIN1GT4UPEY7TF258255

TrimAT4

Drivetrain4WD

Engine6.6L V8

TransmissionAutomatic

Fuel TypeDiesel

Inventory Typenew

MSRP$90,785

Days on Lot124

AT4

Fair Price

$90,7856 mi

Dealer-reported mileage — not independently verified by OAV.

Longmont, CO 80504

Is this 2026 GMC Sierra 2500HD AT4 a good deal?

OAV verdict: Fair Price

Why: Listed at $90,785, comparable market range $73,724–$91,980, based on 40 comparable listings. Days on lot: 124 days (market average 76 days).

Manufacturer MSRPReference

$90,785

This vehicle $90,785 · priced at MSRP

MSRP is the manufacturer's suggested retail price, shown for reference only. OAV rates new-car deals by how far below the LOCAL COMPARABLE MARKET a vehicle is priced (see OAV's market comparables / MRP and sold-price value / TRV) — not by discount from MSRP, because dealer-supplied MSRP is not independently verified. The advertised price is set by the dealer and may require financing, rebates, trade-in, or other qualifications, and excludes taxes, fees, and dealer add-ons — confirm the out-the-door price with the dealer. How OAV rates new-car deals.

Market price position

$90,785 · within market range

Comparable range: $73,724 – $91,980
vs. market: $17,061 above low · $1,195 below high
Comparable vehicles: 40

Market Retail Price (MRP™)

$82,852

This vehicle $90,785 · $7,933 (10%) above MRP

MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.

True Retail Value (TRV™)

$83,668

This vehicle $90,785 · $7,117 (9%) above TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-01) — an estimate, not an appraisal. How TRV works.

Comparable vehicles nationally recently sold in an estimated 13–56 days.

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.

Local Range$73,724 – $91,980

Regional Range$73,724 – $93,684

Mike Maroone Auto

Longmont, CO

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

View all vehicles from mike maroone auto →

Request availability and out-the-door price

OAV will route your inquiry to Mike Maroone Auto for current availability of this 2026 GMC Sierra 2500HD AT4 and an out-the-door price quote (taxes, fees, addons included).

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

About This 2026 GMC Sierra 2500HD

Listing updated: Aug 1, 2026

Listed by a franchise dealer in Longmont, CO · On lot for 124 days · VIN verifiable at NHTSA

This new 2026 GMC Sierra 2500HD AT4 is listed at $90,785 by mike maroone auto in Longmont, CO 80504. It has 6 miles on the odometer (dealer-reported, not independently verified by OAV). 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 40 comparable listings matched to this vehicle, the estimated market range is $73,724 to $91,980. The local market range in CO is $73,724 to $91,980. These comparisons match year, make, and model and may currently span trims and configurations (trim-level matching is rolling out).

This vehicle has been on the lot for 124 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.

How this deal is rated

OAV compares this 2026 GMC Sierra 2500HD against similar vehicles currently available in the local and regional market — same make, model, and year range (currently across available trims and configurations; trim-level matching is rolling out), 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 1GT4UPEY7TF258255 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 processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2026 GMC Sierra 2500HD Market in CO

CO Market Listings

562

Average Price

$79,562

Price Range

$36,795–$111,205

Avg Days on Lot

Based on all 562 2024-2028 GMC Sierra 2500HD listings in the CO market, the average asking price is $79,562. This listing at $90,785 is $11,223 above the broader CO average (14% above the CO average). This is a wider, all-trim comparison across CO; OAV's price verdict above uses the closer comparable set. Comparable prices in CO range from $36,795 to $111,205. Similar vehicles spend an average of 76 days on dealer lots in this market.