Legacy GMC · Slidell, LA

2021 GMC Sierra 1500 SLT

103,322 miles · truck

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PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2021

MakeGMC

ModelSierra 1500

TrimSLT

VIN3GTU9DED2MG316317

Stock number26G2178A

Mileage103,322 miles

BodyPickup

Engine5.3L 8-cyl

Cylinders8

Displacement5.3L

TransmissionAutomatic

Drivetrain4WD

FuelGasoline

MPG14 city / 20 hwy

ExteriorSummit White

Vehicle description

Thank you for your interest in one of Legacy Buick GMC's online offerings. Please continue for more information regarding this 2021 GMC Sierra 1500 SLT with 103,320mi. Indulge yourself with one of the most highly crafted, most luxurious automobiles available today. No matter the terrain or weather, you'll drive at ease in this 4WD-equipped vehicle. With exceptional safety features and superb handling, this 4WD was engineered with excellence in mind. Driven by many, but adored by more, the GMC Sierra 1500 SLT is a perfect addition to any home. There are many vehicles on the market but if you are looking for a vehicle that will perform as good as it looks then this GMC Sierra 1500 SLT is the one!

Features & options (17)

Bluetooth®
4WD/AWD
Android Auto
Apple CarPlay
Aux Input
Heated Seats
Leather Seats
Cruise Control
DriveType: Four Wheel Drive
City: 14 MPG
Hwy: 20 MPG
Combined: 16 MPG
Fuel System: Direct Injection
Fuel Tank Capacity: 24 gal
Fuel Type: Gasoline Fuel
Horse Power: 355
Rear Wheel: Single

Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.

AutosXchange Intel

Vehicle price analysis

Live listings · within 100 miles of Slidell, Louisiana

Asking price$33,995Dealer asking price · 103,322 mi

Market value$35,988Market value · based on 7 comparable cars

vs. market-5.5%Not rated · prices vary widely

Where this price sits

In the typical middle range · 57% of 7 similar listings ask more than this car.

Market value $35,988

This car$33,995

$27,935lowest$53,688highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Not rated · comparable prices vary too widely$1,993 below the market value of $35,988

Price range

$27,935$53,688

3rd lowest price of 8 similar listings within 100 milesTick marks the market value · range of 7 similar listings

AutosXchange Insights

Compared with 7 used 2021 GMC Sierra 1500 SLT listings within 100 mi.
Priced $1,993 below the market value of 7 comparable cars.
3rd lowest price of 8 similar listings within 100 miles.
Has about 31,000 more miles than similar listings.
About 17,220 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # 26G2178A — mention it when you call or text.

How we calculate market value: comparable cars for sale now plus their last listed prices.

Price history

Price tracked by AutosXchange since Nov 6, 2026. No price change at this dealership since Nov 6 ($33,995).0 price changes at this dealership: $33,995 → $33,995.

Market activity: Legacy GMC cut prices on 10 2026 GMC Sierra 1500 by an average of $1,500

AutosXchange Intel Hub: Price changes for this model in Louisiana · This model in the Intel Hub · Market movers in Louisiana

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 11); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.

Cars this price is compared to

Same 2021 Sierra 1500 SLT · used · any miles · within 100 miles of Slidell, Louisiana. All 7 comparable cars for sale, nearest first.

30 photosCARFAX