Skip to main content
U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
OAV

2021 GMC Sierra 2500HD AT4

Dealer imagery unavailable to OAVRequest current photos and confirm the vehicle's condition with the dealer.

Vehicle Details

VIN1GT49PE71MF310067
TrimAT4
Exterior ColorBlack
Drivetrain4WD
Engine6.6L V8
TransmissionAutomatic
Fuel TypeE85 / Unleaded
Inventory Typeused
Days on Lot59

AT4

Great Deal
$29,99693,000 mi

Madison Heights, MI 48071

Is this 2021 GMC Sierra 2500HD AT4 a good deal?

OAV verdict: Great Deal

Why: Listed at $29,996, comparable market range $39,911–$47,600, based on 10 comparable listings. Days on lot: 59 days (market average 87 days).

Market price position

$29,996 · $9,915 below market low

Comparable range
$39,911 – $47,600
vs. market low
— $9,915 (25% below)
Comparable vehicles
10

Market Retail Price (MRP™)

$43,756

This vehicle $29,996 · $13,760 (31%) below 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™)

$50,430

This vehicle $29,996 · $20,434 (41%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-04) — an estimate, not an appraisal. How TRV works.

Comparable vehicles nationally recently sold in an estimated 1464 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.

Regional Range$39,911 – $47,600

Suburban Auto Sales Llc

Madison Heights, MI

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

View all vehicles from suburban auto sales llc

Request availability and out-the-door price

OAV will route your inquiry to Suburban Auto Sales Llc for current availability of this 2021 GMC Sierra 2500HD AT4 and an out-the-door price quote (taxes, fees, addons included).

By submitting, you agree that OAV may share your email, ZIP, and message with Suburban Auto Sales Llc so the dealer can respond to your request. See our Privacy Policy.

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

About This 2021 GMC Sierra 2500HD

Listing updated: Aug 4, 2026

Listed by an independent dealer in Madison Heights, MI · On lot for 59 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 2500HD AT4 is listed at $29,996 by suburban auto sales llc in Madison Heights, MI 48071. It has 93,000 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Black. 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 a Great Deal — priced below market value. Based on 10 comparable listings matched to this vehicle, the estimated market range is $39,911 to $47,600. 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 59 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 Madison Heights, MI 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 (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 an independent dealer in Madison Heights, MI, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GT49PE71MF310067 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.

2021 GMC Sierra 2500HD Market in MI

MI Market Listings

100

Average Price

$45,749

Price Range

$21,900–$63,995

Avg Days on Lot

87

Based on all 100 2019-2023 GMC Sierra 2500HD listings in the MI market, the average asking price is $45,749. This listing at $29,996 is $15,753 below the broader MI average (34% below the MI average). This is a wider, all-trim comparison across MI; OAV's price verdict above uses the closer comparable set. Comparable prices in MI range from $21,900 to $63,995. Similar vehicles spend an average of 87 days on dealer lots in this market.

Similar GMC Sierra 2500HD Listings in MI

8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: AT4 — compare trims below)