2021 GMC Sierra SLT

VIN 1GTP8DED4MZ378317

Market price for this build

$32,674

39 comparable listings

No longer listed since around May 11, 2025

Last listed by Patriot Buick GMC · Killeen, TX

Last asking price: $49,081
On the market: 3 years 10 months

Off the market — its record is still here.

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The date is when the listing came down — the final sale price isn't public. Prices further down describe the market for this build, not this car.

Last listed by Patriot Buick GMC

4600 E Central Texas Expy, Killeen, TX 76543

Hours

Mon–Sat: 7:00 AM – 7:00 PM

They no longer list this VIN, but may have a similar one — worth a call.

Call (254) 690-7000

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This car on VehiSales ↗

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VehiLeaks · Vehicle Report

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Owned it, bought it, or eyeing one like it? The VIN record shows what this car went through.

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

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Inside your report

VIN report

2021 GMC Sierra SLT

VIN 1GTP8DED4MZ378317

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 · 1GTP8DED4MZ378317

vehileaks.com →

Market price range

Based on 39 comparable same-build listings · Market data as of November 1, 2026

Below market

$26,627

Typical price

$32,674

Above market

$35,462

See all 2021 GMC Sierra prices — typical $32,674 →

THE SMARTER NEXT STEP

Love this car? See what else is out there.

2021 GMC Sierra SLT for sale near you

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Listings

Full listing history on VehiSales →

No active listings of this exact VIN right now.

Decoded from the VIN

NHTSA build data for 1GTP8DED4MZ378317

Trim

Slt crew cab rwd

Engine

5.3L · V8

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

Sample GMC window sticker, shown for illustration

GMC Window sticker on file for this VIN The original window sticker for this Sierra Factory equipment, the options actually installed and the price this car left the line with — the same document that hung on the glass in the showroom. Open the sticker — $4 3 for $9 Opens on VehiLeaks · PDF right after checkout

5-year cost to own

Beyond the sticker: what this 2021 GMC Sierra 1500 likely costs over five years at 15,000 mi/yr.

Depreciation $11,496

Fuel $12,250

Insurance $8,000

Maintenance & repairs $3,750

Total, 5 years $35,496

Estimate — insurance and taxes vary by driver and state.

Safety & recalls

NHTSA crash tests & recall campaigns for this model year

The 2021 GMC Sierra 1500 has 7 recall campaigns as of October 2026. NHTSA rated it 4 out of 5 stars overall.

Overall

★★★★☆

4 of 5 · NHTSA

Frontal crash

★★★★☆

4 of 5 · NHTSA

Side crash

★★★★★

5 of 5 · NHTSA

Rollover

★★★★☆

4 of 5 · NHTSA

Tested configuration: 2021 GMC Sierra 1500 PU/CC 4WD

7 recall campaigns on this model year

Check accident & title history →

SEAT BELTS

General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet…

NHTSA campaign 20V792000
SEAT BELTS

General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and…

NHTSA campaign 20V811000
TIRES

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, GMC Acadia and Chevrolet Traverse vehicles and 2020-2021 Chevrolet Silverado 1500, GMC Sierra 1500…

NHTSA campaign 20V684000

Recall campaigns apply to the model year, not to one car. Check remedy status for this VIN at nhtsa.gov/recalls.

Model-level data for the 2021 GMC Sierra 1500 from NHTSA (recalls, NCAP crash tests) and EPA fueleconomy.gov, refreshed October 27, 2026.

Where the price is heading

Typical asking price for a 2021 GMC Sierra over the last 6 months — the market softened $1,555 in that span.

Jun Jul Aug Sep Oct Nov

Monthly price table

Month	Typical price
June 2026	$35,750
July 2026	$35,223
August 2026	$34,895
September 2026	$34,555
October 2026	$33,997
November 2026	$34,195

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 November 1, 2026, among same-year alternatives to the 2021 GMC Sierra in this catalog, the 2021 Nissan Titan has the lowest median asking price ($28,744, 450 listings with photos) and the 2021 Toyota Tundra the highest ($37,998, 669 listings).

Comparison catalog · Snapshot November 1, 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

$35,207

Comparison catalog median · 4,163 listings with photos in the comparison sample

All trims

$37,998

Median asking price · 669 qualifying listings

Middle 50%$33,620–$43,824

Find listings on VehiSales ↗

Actual Platinum 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	$35,207	$31,000–$40,433	4,163
2021 Ford F-150 All trims	$31,890	$27,066–$36,971	4,748
2021 Chevrolet Silverado All trims	$31,415	$27,220–$36,290	7,068
2021 Ram 1500 All trims	$29,786	$25,413–$34,475	4,930
2021 Nissan Titan All trims	$28,744	$24,250–$32,649	450
2021 Toyota Tundra All trims	$37,998	$33,620–$43,824	669

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: November 1, 2026, 05:00 UTC. 22 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.

Market by model year

What each model year costs right now — live supply, median asking price and how much value each year keeps versus the newest one.

Year	Units for sale	Median price	vs newest	Avg mileage
2026	271	$66,255	100%	—
2025	13	$44,885	68%	42,536 mi
2024	21	$41,998	63%	41,177 mi
2023	14	$42,111	64%	43,254 mi
2021	14	$37,175	56%	69,044 mi
2020	12	$31,929	48%	89,532 mi
2019	11	$34,989	53%	80,759 mi
2018	13	$26,900	41%	92,265 mi