Used GMC Sierra 1500 SLT for Sale nearLongmont, CO
425 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 45,077
- Stock #:
- 11556VG
- VIN:
- 3GTUUDED1SG197879
New arrival
Sponsored by O'Meara Volkswagen
2025 GMC Sierra 1500
SLT Crew Cab 4WD
45,077 mi
Thornton, CO
20 mi away
Fair Deal
$39,798
- Year:
- 2015
- 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:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black/Dark Ash
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 115,587
- Stock #:
- 46072B
- VIN:
- 3GTU2VECXFG464798
Sponsored Listing
2015 GMC Sierra 1500
SLT Crew Cab 4WD
115,587 mi
Longmont, CO
1 mi away
Fair Deal
$24,358
- Year:
- 2017
- 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
- Fuel type:
- Gasoline
- Interior color:
- Jet Black/Spice Red
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 98,320
- Stock #:
- P00299
- VIN:
- 3GTU2NEC0HG276228
Sponsored Listing
2017 GMC Sierra 1500
SLT Crew Cab 4WD
98,320 mi
Denver, CO
24 mi away
Fair Deal
$26,776
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black/Spice Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 125,715
- Stock #:
- 138477A
- VIN:
- 3GTU2NEC0HG264788
New arrival
2017 GMC Sierra 1500
SLT Crew Cab 4WD
125,715 mi
Greeley, CO
25 mi away
Fair Deal
$24,000
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 97,899
- Stock #:
- 540483
- VIN:
- 3GTU2NEC3JG540483
2018 GMC Sierra 1500
SLT Crew Cab 4WD
97,899 mi
Frederick, CO
7 mi away
Good Deal
$27,529
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 14,582
- Stock #:
- 360804
- VIN:
- 1GTUUDEL6RZ360804
2024 GMC Sierra 1500
SLT Crew Cab 4WD
14,582 mi
Frederick, CO
7 mi away
Fair Deal
$49,995
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 172,366
- Stock #:
- 1895
- VIN:
- 3GTU2NEC0HG105611
Price drop
-$3,000
2017 GMC Sierra 1500
SLT Crew Cab 4WD
172,366 mi
Englewood, CO
36 mi away
Great Deal
$17,999
$14,999
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Dark Ash Gray
- Transmission:
- Automatic
- Mileage:
- 78,738
- Stock #:
- L135471
- VIN:
- 1GTU9DED7LZ135471
New arrival
2020 GMC Sierra 1500
SLT Crew Cab 4WD
78,738 mi
Longmont, CO
3 mi away
Fair Deal
$34,798
- Year:
- 2014
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 5.3L V8 Flex Fuel Vehicle
- Exterior color:
- Summit White
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 114,116
- Stock #:
- G562912
- VIN:
- 3GTU2VEC3EG562912
Price drop
-$1,790
2014 GMC Sierra 1500
SLT Crew Cab 4WD
114,116 mi
Boulder, CO
12 mi away
Good Deal
$20,639
$19,744
- Year:
- 2016
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 125,204
- Stock #:
- KBB8926
- VIN:
- 3GTU2NEC2GG253323
2016 GMC Sierra 1500
SLT Crew Cab 4WD
125,204 mi
Englewood, CO
36 mi away
Fair Deal
$22,935
- Year:
- 2014
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 5.3L V8 Flex Fuel Vehicle
- Exterior color:
- White
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Brown (Tan)
- Transmission:
- 6-Speed Automatic
- Mileage:
- 92,542
- Stock #:
- SAM 241799
- VIN:
- 3GTU2VEC6EG241799
2014 GMC Sierra 1500
SLT Crew Cab 4WD
92,542 mi
Littleton, CO
42 mi away
Fair Deal
$22,988
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Quicksilver Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 70,860
- Stock #:
- L214318A
- VIN:
- 3GTU9DED0LG214318
2020 GMC Sierra 1500
SLT Crew Cab 4WD
70,860 mi
Longmont, CO
3 mi away
Good Deal
$35,006
- Year:
- 2015
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Blue
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 92,215
- Stock #:
- 26T1365A
- VIN:
- 3GTU2VEJ3FG481957
2015 GMC Sierra 1500
SLT Crew Cab 4WD
92,215 mi
Lone Tree, CO
43 mi away
Fair Deal
$26,998
- Year:
- 2016
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Red
- Fuel type:
- Gasoline
- Interior color:
- Brown (Tan)
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 107,264
- Stock #:
- 32117
- VIN:
- 3GTU2NEC9GG240861
New arrival
2016 GMC Sierra 1500
SLT Crew Cab 4WD
107,264 mi
Wheat Ridge, CO
27 mi away
Fair Deal
$24,999
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Deep Mahogany Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 51,821
- Stock #:
- BC23024
- VIN:
- 1GTU9DED8LZ149234
Price drop
-$1,000
2020 GMC Sierra 1500
SLT Crew Cab 4WD
51,821 mi
Frederick, CO
7 mi away
Good Deal
$36,594
$35,594
- 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:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 96,827
- Stock #:
- TCRTMG348321
- VIN:
- 3GTU9DEDXMG348321
2021 GMC Sierra 1500
SLT Crew Cab 4WD
96,827 mi
Denver, CO
20 mi away
Good Deal
$31,852
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Blue
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 147,335
- Stock #:
- A377
- VIN:
- 3GTU2NEC3HG300022
2017 GMC Sierra 1500
SLT Crew Cab 4WD
147,335 mi
Denver, CO
31 mi away
Fair Deal
$20,845
- Year:
- 2016
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Quicksilver Metallic
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 80,745
- Stock #:
- G697357A
- VIN:
- 3GTU2NECXGG173123
New arrival
2016 GMC Sierra 1500
SLT Crew Cab 4WD
80,745 mi
Brighton, CO
21 mi away
Good Deal
$27,488
- Year:
- 2019
- 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
- Transmission:
- 8-Speed Automatic
- Mileage:
- 100,480
- Stock #:
- G645137A
- VIN:
- 3GTU9DED3KG219415
2019 GMC Sierra 1500
SLT Crew Cab 4WD
100,480 mi
Brighton, CO
21 mi away
Fair Deal
$31,488
- Year:
- 2016
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 79,007
- Stock #:
- G690985A
- VIN:
- 3GTU2NEC7GG288911
New arrival
2016 GMC Sierra 1500
SLT Crew Cab 4WD
79,007 mi
Brighton, CO
21 mi away
Good Deal
$27,488
- Year:
- 2015
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 159,859
- Stock #:
- 49652
- VIN:
- 3GTU2VEC6FG449652
2015 GMC Sierra 1500
SLT Crew Cab 4WD
159,859 mi
Englewood, CO
37 mi away
Fair Deal
$17,987
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 132,248
- Stock #:
- 33864
- VIN:
- 3GTU2NECXJG333864
2018 GMC Sierra 1500
SLT Crew Cab 4WD
132,248 mi
Denver, CO
32 mi away
Fair Deal
$24,490
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 190,338
- Stock #:
- 161422
- VIN:
- 3GTU2NEC5JG161422
New arrival
2018 GMC Sierra 1500
SLT Crew Cab 4WD
190,338 mi
Home delivery from Mesa, AZ
Price includes $596 shipping
Great Deal
$16,390
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 172,366
- Stock #:
- 1895
- VIN:
- 3GTU2NEC0HG105611
Price drop
-$3,000
Sponsored Listing
2017 GMC Sierra 1500
SLT Crew Cab 4WD
172,366 mi
Englewood, CO
36 mi away
Great Deal
$17,999
$14,999
FAQs
How much does the GMC Sierra 1500 SLT cost in Longmont, CO?
The average GMC Sierra 1500 SLT costs about $11,035.90. The average price has decreased by -7.2% since last year. The 425 for sale near Longmont, CO on CarGurus, range from $5,867 to $73,047 in price.
How many GMC Sierra 1500 SLT vehicles in Longmont, CO have no reported accidents or damage?
352 out of 425 for sale near Longmont, CO have no reported accidents or damage.
What is the fuel economy of the GMC Sierra 1500 SLT?
Depending on the engine and options, the GMC Sierra 1500 SLT gets between 11 and 24 MPG/MPGe.
What fuel types are available?
Diesel, Flex Fuel Vehicle, Gasoline engines are available.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
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