U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
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Vehicle Details

VIN1GT49ME75MF293322
TrimSLE
Exterior ColorSilver
Drivetrain4WD
Engine6.6L V8
TransmissionAutomatic
Fuel TypeE85 / Unleaded
Inventory Typeused
Days on Lot16

2021 GMC Sierra 2500HD

SLE

Unscored
$36,898110,735 mi

Boulder, CO 80301

Is this 2021 GMC Sierra 2500HD SLE a good deal?

OAV verdict: Unscored

Why: Listed at $36,898, comparable market range $36,898–$36,898. Days on lot: 16 days (market average 58 days).

Market price position

36,898
36,898
36,898

$36,898 · only listing at this price

$36,898 — single data point
Regional range
$36,898 (0 listings)
vs. market
Exact match — no spread
Comparable vehicles
0
Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 1452 days.

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges refresh daily.

Regional Range$33,863 – $33,957

Mike Maroone Cadillac

Boulder, CO

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

View all vehicles from mike maroone cadillac

Request availability and out-the-door price

OAV will route your inquiry to Mike Maroone Cadillac for current availability of this 2021 GMC Sierra 2500HD SLE 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 2021 GMC Sierra 2500HD

Listing updated: Jun 23, 2026

Listed by a franchise dealer in Boulder, CO · On lot for 16 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 2500HD SLE is listed at $36,898 by mike maroone cadillac in Boulder, CO 80301. It has 110,735 miles on the odometer. The exterior color is Silver. 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 Unscored due to insufficient comparable data. Based on available similar vehicles in the Boulder market, the estimated market range is $36,898 to $36,898.

This vehicle has been on the lot for 16 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 Boulder, 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 2021 GMC Sierra 2500HD 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:

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 Boulder, CO, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GT49ME75MF293322 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 refreshed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2021 GMC Sierra 2500HD Market in CO

Comparable Vehicles

151

Average Price

$46,866

Price Range

$9,700–$64,199

Avg Days on Lot

58

Based on 151 comparable 2019-2023 GMC Sierra 2500HD listings in CO, the average asking price is $46,866. This listing at $36,898 is $9,968 below average (21% below market). Comparable prices in CO range from $9,700 to $64,199. Similar vehicles spend an average of 58 days on dealer lots in this market.

Similar GMC Sierra 2500HD Listings in CO

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