Is the $35,998 price on this 2021 GMC Sierra 1500 a good deal?

OAV rates this as a Great Deal because the asking price of $35,998 is below the typical market range for this vehicle.

What is the average price for a 2021 GMC Sierra 1500 in TN?

Based on 864 comparable listings in TN, the average asking price for a 2019-2023 GMC Sierra 1500 is $40,253, with prices ranging from $18,760 to $64,990.

How long does a 2021 GMC Sierra 1500 typically stay on dealer lots?

Comparable GMC Sierra 1500 listings in TN spend an average of 45 days on dealer lots.

Where is this 2021 GMC Sierra 1500 located?

This vehicle is listed in Knoxville, TN 37934. VIN: 1GTP8DET4MZ408228. Mileage: 59,087 miles.

What is the fair market price range for this 2021 GMC Sierra 1500?

OAV's Price-to-Market analysis estimates the fair market range is $36,164 to $40,993, based on 13 comparable vehicles.

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Vehicle Details

VIN1GTP8DET4MZ408228

TrimSLT

Exterior ColorBlue

DrivetrainRWD

Engine3.0L I6

TransmissionAutomatic

Fuel TypeDiesel

Inventory Typeused

Days on Lot9

2021 GMC Sierra 1500

SLT

Great Deal

$35,99859,087 mi

Knoxville, TN 37934

Is this 2021 GMC Sierra 1500 SLT a good deal?

OAV verdict: Great Deal

Why: Listed at $35,998, comparable market range $36,164–$40,993, based on 13 comparable listings. Days on lot: 9 days (market average 45 days).

Market price position

$35,998 · $166 below market low

$36,164comparable$40,993

Regional range: $36,164 – $40,993
vs. market low: — $166 (0% below)
Comparable vehicles: 13

Market Retail Price (MRP™)

$38,579

This vehicle $35,998 · $2,581 (7%) 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™)

$37,638

This vehicle $35,998 · $1,640 (4%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-16) — an estimate, not an appraisal. How TRV works.

Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 18–77 days.

Market Breakdown

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

Regional Range$36,164 – $40,993

Carmax Knoxville

Knoxville, TN

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

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Request availability and out-the-door price

OAV will route your inquiry to Carmax Knoxville for current availability of this 2021 GMC Sierra 1500 SLT 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 1500

Listing updated: Jul 16, 2026

Listed by an independent dealer in Knoxville, TN · On lot for 9 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 SLT is listed at $35,998 by carmax knoxville in Knoxville, TN 37934. It has 59,087 miles on the odometer. The exterior color is Blue. It features a RWD drivetrain with a 3.0L I6 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 13 similar vehicles in the Knoxville market, the estimated market range is $36,164 to $40,993.

This vehicle has been on the lot for 9 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 Knoxville, TN 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 1500 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 an independent dealer in Knoxville, TN, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP8DET4MZ408228 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 continuously; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2021 GMC Sierra 1500 Market in TN

Comparable Vehicles

864

Average Price

$40,253

Price Range

$18,760–$64,990

Avg Days on Lot

Based on 864 comparable 2019-2023 GMC Sierra 1500 listings in TN, the average asking price is $40,253. This listing at $35,998 is $4,255 below average (11% below market). Comparable prices in TN range from $18,760 to $64,990. Similar vehicles spend an average of 45 days on dealer lots in this market.