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Used 2021 GMC Sierra 1500 for Sale near Connecticut

449 results
Hartford, CT
2021 GMC Sierra 1500 AT4 Crew Cab 4WD Colonial Mazda

2021 GMC Sierra 1500

AT4 Crew Cab 4WD

69,793 miles

$37,999

Fair Deal
Danbury, CT
46 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
18 MPG
Fuel type:
Gasoline
Interior color:
Jet Black - Kalahari Accents
Transmission:
Automatic
Mileage:
69,793
Stock number:
BH23
VIN:
1GTP9EEDXMZ181140

Sponsored

2020 GMC Sierra 1500 Denali Crew Cab 4WD

2020 GMC Sierra 1500

Denali Crew Cab 4WD

84,840 miles

$35,930

Good Deal
Watertown, CT
26 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Red Quartz Tintcoat
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
84,840
Stock number:
X284696
VIN:
1GTU9FEL4LZ284696

Sponsored

2021 GMC Sierra 1500 Elevation Crew Cab 4WD

2021 GMC Sierra 1500

Elevation Crew Cab 4WD

77,694 miles

$30,787

Good Deal
Brookfield, CT
43 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Silver
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
77,694
Stock number:
Z3998A
VIN:
3GTU9CET7MG327640

Sponsored

2020 GMC Sierra 1500 Denali Crew Cab 4WD

2020 GMC Sierra 1500

Denali Crew Cab 4WD

119,293 miles

$29,944

Great Deal
Old Saybrook, CT
35 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Black
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Transmission:
10-Speed Automatic
Mileage:
119,293
Stock number:
5078
VIN:
1GTU9FET8LZ292641

2020 GMC Sierra 1500 SLT Crew Cab 4WD

2020 GMC Sierra 1500

SLT Crew Cab 4WD

85,842 miles

$31,550

Good Deal
Plainville, CT
11 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Gray
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Transmission:
Automatic
Mileage:
85,842
Stock number:
P163937
VIN:
3GTU9DEL3LG163937

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2021 GMC Sierra 1500

Elevation Crew Cab 4WD

99,326 miles

$29,995

Good Deal
New London, CT
40 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Blue
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
99,326
Stock number:
AD2428A
VIN:
3GTU9CET2MG432733

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2021 GMC Sierra 1500

Elevation Crew Cab 4WD

88,584 miles

$30,590

Good Deal
Certified Pre-Owned
Glastonbury, CT
6 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Summit White
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
88,584
Stock number:
21UC8942
VIN:
3GTU9CET9MG183296

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2020 GMC Sierra 1500

SLE Crew Cab 4WD

118,452 miles

$22,995

Great Deal
Windsor Locks, CT
10 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Pacific Blue Metallic
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Dark Walnut/Slate
Transmission:
Automatic
Mileage:
118,452
Stock number:
410174
VIN:
3GTU9BET2LG410174

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2021 GMC Sierra 1500

SLE Double Cab 4WD

70,762 miles

$22,999

Great Deal
Middletown, CT
15 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
310 hp 2.7L I4
Exterior color:
Pacific Blue Metallic
Combined gas mileage:
19 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
8-Speed Automatic
Mileage:
70,762
Stock number:
BM3905
VIN:
1GTR9BEK9MZ172208

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2021 GMC Sierra 1500

Denali Crew Cab 4WD

87,278 miles

$33,955

Great Deal
Branford, CT
33 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Onyx Black
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
87,278
Stock number:
326804B
VIN:
3GTU9FET6MG373073

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2021 GMC Sierra 1500

AT4 Crew Cab 4WD

95,562 miles

$34,932

Fair Deal
Wallingford, CT
20 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
18 MPG
Fuel type:
Gasoline
Interior color:
Jet Black With Kalahari Accents
Transmission:
Automatic
Mileage:
95,562
Stock number:
228533T
VIN:
1GTP9EED2MZ228533

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2022 GMC Sierra 1500

Elevation Crew Cab 4WD

52,161 miles

$36,797

Fair Deal
Certified Pre-Owned
Norwich, CT
35 mi away
Year:
2022
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
310 hp 2.7L I4
Exterior color:
Onyx Black
Combined gas mileage:
18 MPG
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
8-Speed Automatic
Mileage:
52,161
Stock number:
13598
VIN:
3GTPUCEK8NG628633

Sponsored

  1. Home
  2. / Used Cars
  3. / GMC Sierra 1500
  4. / 2021
  5. / Connecticut
Overview
Reviews
FAQs
Picture of 2021 GMC Sierra 1500

Unless you can’t live without the deeply-satisfying rumble of a V8 engine, the 2021 GMC Sierra 1500 is at its best when equipped with the affordable Duramax turbodiesel inline-six.

GMC is the “professional grade” brand at General Motors, but that’s just marketing mumbo jumbo. The 2021 GMC Sierra 1500 is the same thing as a Chevrolet Silverado 1500, but with different styling and a handful of unique features, like an optional carbon-fiber composite cargo bed. This year, GMC makes several changes to its full-size light-duty pickup truck, none of them earth-shattering. This remains a fundamentally appealing truck in need of attention to the details.

4.9 Overall rating

(46 reviews)
Matthew B
5.0
Reviewed a 2021 GMC AT4 Crew Cab 4WD on Jan 07, 2025

Best truck I have driven! Highway speeds are great and feels like I’m driving a Cadillac.

Greg O
5.0
Reviewed a 2021 GMC Sierra 1500 on Feb 15, 2024

Nice vehicle! Liked it better than the same year Ram.

cameron s
5.0
Reviewed a 2021 GMC Sierra 1500 on Jan 09, 2024

Its great looking and functioning very smooth with a excellent warranty. I miss the trunk in my Ridgeline but there are so many aftermarket applications Im excited to build this truck out.

Donald P
5.0
Reviewed a 2021 GMC Sierra 1500 on Oct 08, 2023

I love everything about this truck, so much I bought one. I got one with the 3liter duramax. Hopefully it’ll be the last truck I’ll ever own.

Randy R
5.0
Reviewed a 2021 GMC Sierra 1500 on Jun 05, 2023

The features on the 2021 GMC Sierra was everything and more then what I expected. The value of the truck was decent considering the times we live in now. Would highly recommend GMC so far

2021 GMC Sierra 1500 FAQs

How much does the 2021 GMC Sierra 1500 cost in Connecticut?

The average 2021 GMC Sierra 1500 costs about $36,338.28. The average price has decreased by -8.2% since last year. The 449 for sale near Connecticut on CarGurus, range from $16,931 to $64,439 in price.

Is the 2021 GMC Sierra 1500 a good car?

CarGurus experts gave the 2021 GMC Sierra 1500 an overall rating of 5.7/10 and 2021 GMC Sierra 1500 owners have rated the vehicle a 4.9/5 stars on average. If a vehicle has both strong expert and owner reviews, you can feel confident in its quality. If either expert reviews, owner reviews, or both are spotty, you might want to do some research to figure out where the car falls short.

How many 2021 GMC Sierra 1500 vehicles in Connecticut have no reported accidents or damage?

446 out of 449 for sale near Connecticut have no reported accidents or damage.

Is the 2021 GMC Sierra 1500 safe?

CarGurus experts gave the 2021 GMC Sierra 1500 a safety rating of 4/10.

What is the fuel economy of the 2021 GMC Sierra 1500?

Depending on the engine and options, the 2021 GMC Sierra 1500 gets between 16 and 26 MPG (or EV battery range).

What fuel types are available?

Diesel, Flex Fuel Vehicle, Gasoline engines are available.

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