2021 GMC Sierra

VIN 3GTN8AEH9MG389449

This vehicle is no longer listed. The figures below describe the market for this build.

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Last listed by Koons of Tysons Chevrolet GMC

2000 Chain Bridge Road, Vienna, VA 22182

Hours

Mon–Thu: 9:00 AM – 9:00 PM
Fri: 7:00 AM – 6:00 PM
Sat: 7:00 AM – 5:00 PM
Sun: 11:00 AM – 6:00 PM

This VIN is no longer listed by this dealer. They may still have a similar vehicle — ask.

Call (855) 307-0236

Get directions koonschevytysonscorner.com

This car on VehiSales ↗

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✓ Reported accidents & damage
✓ Title brands — salvage, flood, lemon
✓ Odometer readings over time
✓ Every past listing: price, dealer, photos

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VIN report

2021 GMC Sierra

VIN 3GTN8AEH9MG389449

Accidents Reported damage & accident records

Title Salvage, flood & other title brands

Mileage Recorded odometer readings

Listings Past prices, dealers & listing photos

Section preview · Results shown in the full report

Report for this VIN · 3GTN8AEH9MG389449

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THE SMARTER NEXT STEP

Love this car? See what else is out there.

2021 GMC Sierra for sale near ViennaVA

6 cheaper within 50 miles · best $10,595 less

3 same trim from $12,900 ▼ $10,595 less Manassas

3 from 2020–2022, same body from $18,999 ▼ $4,496 less Leesburg

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50 miles around Vienna

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Price history for this VIN

Price increased $495 (+2.2%) over 72 days.

Mar 18, 2026 · $23,000 May 29, 2026 · $23,495

Asking prices recorded across 4 listing dates for VIN 3GTN8AEH9MG389449, spanning 72 days.

Listings

Full listing history on VehiSales →

No active listings of this exact VIN right now.

Former listings

Dealer	Location	Price	Mileage	Listed	Seen
Koons of Tysons Chevrolet GMC	Vienna, VA 22182	$23,495	61,075 mi	2026-05-29	96 d ago
Koons Tysons Toyota	Vienna, VA 22182	$19,750	60,962 mi	2026-03-20	96 d ago
Koons Toyota Tysons	Vienna, VA 22182	$23,000	60,962 mi	2026-03-18	96 d ago

Decoded from the VIN

NHTSA build data for 3GTN8AEH9MG389449

Engine

4.3L · V6

Drivetrain

4x2

Body

Pickup

Fuel

Gasoline

Doors

Model year

2021

Made by

GENERAL MOTORS LLC

Full factory specs for this build →

✗ Backup camera
✗ Blind-spot monitor
✗ Lane departure
✗ ABS
✗ Electronic stability

Fuel economy (EPA)

Combined

MPG

City

MPG

Highway

MPG

$1,790 /yr est. fuel

Assumes 15,000 miles a year at $3.10/gallon and 26 MPG combined.

Model-level data for the 2021 GMC Sierra from EPA fueleconomy.gov, refreshed August 27, 2026.

Where the price is heading

Typical asking price for a GMC Sierra over the last 6 months — the market firmed $1,555 in that span.

Apr May Jun Jul Aug Sep

Monthly price table

Month	Typical price
April 2026	$34,940
May 2026	$36,867
June 2026	$36,500
July 2026	$36,990
August 2026	$35,999
September 2026	$36,495

A little comparison goes a long way

What else could you drive?

Compare 2021 GMC Sierra with other models from the same year. Choose the trims that matter to you.

About this comparison ↓

As of September 14, 2026, among same-year alternatives to the 2021 GMC Sierra in this catalog, the 2021 Nissan Titan has the lowest median asking price ($30,000, 426 listings with photos) and the 2021 Toyota Tundra the highest ($39,140, 573 listings).

Comparison catalog · Snapshot September 14, 2026, 05:00 UTC · Only listings with photos. This sample is separate from the price overview above and its figures differ.

Your comparison starting point

2021 GMC Sierra

All trims · United States

$36,495

Comparison catalog median · 3,543 listings with photos in the comparison sample

All trims

$39,140

Median asking price · 573 qualifying listings

Middle 50%$34,588–$44,995

Find listings on VehiSales ↗

Actual SR5 Grade listing photo; individual equipment may differ.

Compare prices side by side

Asking prices for your current selection (USD)
Model / trim	Median	Middle 50%	Listings
2021 GMC Sierra All trims	$36,495	$32,340–$41,489	3,543
2021 Ford F-150 All trims	$32,790	$27,990–$37,900	4,511
2021 Chevrolet Silverado All trims	$32,694	$27,998–$37,436	6,170
2021 Ram 1500 All trims	$30,500	$26,488–$35,587	4,487
2021 Nissan Titan All trims	$30,000	$25,750–$34,025	426
2021 Toyota Tundra All trims	$39,140	$34,588–$44,995	573

What these prices mean

Only catalog listings with photos are included. Trim names do not verify equivalent equipment. Prices are asking prices, not completed sales. Alternatives share the body style and class of the source model; the nearest model years are used when the same year has too few listings. Price differences are not a valuation adjustment or guaranteed savings.

Snapshot: September 14, 2026, 05:00 UTC. 20 source listings excluded by statistical price screening; this does not verify that every deposit or payment ad has been removed.

VehiSales opens in a new tab with the model, year and known mileage range. Confirm trim, fuel, drivetrain, condition and location on VehiSales; its live inventory may differ.