$37,998

Used

2021 GMC Sierra 1500 SLT

64,747 mi.

$37,998

Est. $700/mo^*

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We compared this car with similar 2021 GMC Sierra 1500s based on price, mileage, features, condition, and several other factors.

Avg. market price range

$34.9K $37.1K $39.3K $41.5K

$37,998 This is a good deal.

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Basics

Exterior color: Black
Interior color: BLACK
Drivetrain: Rear-wheel Drive
MPG: 15–22
Based on EPA mileage ratings. Use for comparison purposes only. Actual mileage will vary depending on driving conditions, driving habits, vehicle maintenance, and other factors.
Fuel type: Gasoline
Transmission: Automatic
Engine: Gas
VIN: 3GTP8DEDXMG421705
Stock #: 27510310
Mileage: 64,747 mi.

Features

Convenience

Heated Steering Wheel
Remote Start

Entertainment

Android Auto®
Apple CarPlay®
Bluetooth®
HomeLink
Satellite Radio
WiFi Hotspot

Exterior

Alloy Wheels
Tow Hitch

Safety

Backup Camera

Seating

Leather Seats
Memory Seat

View all features

Seller’s info

CarMax Arlington/Ft. Worth

Not rated Dealerships need five reviews in the past 24 months before we can display a rating.

(18 reviews)

8400 Anderson Blvd, Fort Worth, TX 76120

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Visit CarMax Arlington/Ft. Worth

Seller’s notes about this car

CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov/recalls to learn if this vehicle has an unrepaired safety recall. At CarMax, finding the right car is easy. You can shop online, get pre-qualified with no impact to your credit, and receive a trade-in offer all from the comfort of home. See carmax.com for details. Then, when it's time to buy, you can take advantage of express pickup at your local CarMax. And we stand behind every used car we sell with a 90-Day/4,000-Mile (whichever comes first) Limited Warranty. See store for details. Price excludes tax, title, tags and $225 documentary fee (not required by law). Price assumes that final purchase will be made in the State of TX, unless vehicle is non-transferable. Vehicle subject to prior sale. Applicable transfer fees are due in advance of vehicle delivery and are separate from sales transactions. Inventory shown here is updated every 24 hours.

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Consumer reviews

See what others are saying about the 2021 GMC Sierra 1500.

(56 reviews)

60% of drivers recommend this car

Rating breakdown (out of 5):

Comfort 4.2
Interior 4.2
Performance 3.8
Value 3.6
Exterior 4.3
Reliability 3.5

Most recent consumer reviews

Bought a 2021 GMC Sierra SLT used 18k on it.

February 21, 2025

By Chris from Colorado

Owns this car

Bought a 2021 GMC Sierra SLT used 18k on it. Drove it 350 miles and the left band of lifter went bad,bent push rod and rocker arms. Got back and drove it about 300 miles and had the oil changed to make sure there was no metal in it from the work that was done. The next day I started up and it had 70+ pounds of oil pressur. Took it the dealer and now it is getting a new oil pump. This is a very nice truck to look at and drives nice but you should not have these kind of problems with a 50 thousand dollar truck. GM has paid fo6 all the fixes. Waiting to see what is next. Don't want to trade it in to give someone this problem. It suck to get a lemon.

Rating breakdown (out of 5):

Comfort 4.0
Interior 4.0
Performance 3.0
Value 3.0
Exterior 4.0
Reliability 1.0

Purchased a Used car
Used for Having fun
Does not recommend this car

3 people out of 3 found this review helpful. Did you?

Yes

No recomiendo a nadie comprar GMC Denali antes de 70000

September 27, 2024

By Oleidy from Atllanta

Owns this car

No recomiendo a nadie comprar GMC Denali antes de 70000 millas se daña el motor y antes de 80000 millas se daña las transmisión y el diferencial son pura belleza pero es un problema te cobran 14000 por el motor solo

Rating breakdown (out of 5):

Comfort 1.0
Interior 1.0
Performance 1.0
Value 1.0
Exterior 1.0
Reliability 1.0

Purchased a New car
Used for Transporting family
Does recommend this car

2 people out of 4 found this review helpful. Did you?

Yes

This truck has a jerk when changing gears sometimes.

May 8, 2024

By Arvonia McWilliams

Owns this car

This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.

Rating breakdown (out of 5):

Comfort 5.0
Interior 5.0
Performance 4.0
Value 4.0
Exterior 5.0
Reliability 5.0

Does recommend this car

9 people out of 11 found this review helpful. Did you?

Yes

See all 56 consumer reviews

Explore the 2021 GMC Sierra 1500 SLT

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2021 GMC Sierra 1500 SLT

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2021 GMC Sierra 1500 SLT

Deal Gauge™
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Contact seller

Car shopper resources

Basics

Features

Seller’s info

CarMax Arlington/Ft. Worth

Seller’s notes about this car

Have a question?

Consumer reviews

Most recent consumer reviews

Bought a 2021 GMC Sierra SLT used 18k on it.

No recomiendo a nadie comprar GMC Denali antes de 70000

This truck has a jerk when changing gears sometimes.

Car shopper resources

2021 GMC Sierra 1500 SLT

Car shopper resources

Basics

Features

Seller’s info

CarMax Arlington/Ft. Worth

Seller’s notes about this car

Have a question?

Customize your payment

Consumer reviews

Most recent consumer reviews

Bought a 2021 GMC Sierra SLT used 18k on it.

No recomiendo a nadie comprar GMC Denali antes de 70000

This truck has a jerk when changing gears sometimes.

Car shopper resources