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Used Cars for Sale
GMC
Sierra 3500
SLT
Used GMC Sierra 3500 SLT for Sale in Fort Collins, CO
80521
Filters (4)
Items 1 to 2 of 7.
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(1)
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(1)
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(5)
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(5)
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(5)
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(2)
Great Price
(1)
Make, Model & Trim
GMC
Models
Sierra 3500
Acadia
(46)
Caballero
Canyon
(27)
Envoy
Envoy XL
Envoy XUV
G1500
G2500
G3500
(1)
Hummer EV
(3)
Jimmy
(1)
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(1)
Savana 2500
(1)
Savana 3500
(8)
Savana 4500
Sierra 1500
(134)
Sierra 2500
(58)
Sierra 3500
(28)
Sierra EV
Sonoma
Suburban
Syclone
Terrain
(42)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(35)
Yukon XL
(22)
Sierra 3500 Trims
SLT
AT4
(2)
Classic SL
Classic SLE
Classic W/T
Denali
(15)
Denali Ultimate
(4)
Pro
(1)
SL
SLE
(1)
SLT
(5)
W/T
SLT Package
Any
Onstar Plus Package
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(1)
LPO, Hitch Package
SLT Premium Plus Package
Sun And Navigation Package
SLT Convenience Package
(2)
License Plate Front Mounting Package
Snow Plow Prep Package
Entertainment Package, Rear Seat DVD Player
Convenience Package
Gooseneck/5th Wheel Prep Package
(2)
X31 Off-Road and Protection Package
Texas SLT Premium Package
Driver Alert Package II
(1)
EZ-Lift Tailgate Package
LPO, Cargo Convenience Package
Sierra HD Pro Safety Plus Package
LPO, GMC Interior Protection Package
Heavy Duty Front Spring/Camper Package
(1)
X31 Off-Road Package
(3)
Entertainment Package, Rear Seat DVD/Blu-Ray Player
LPO, Black Badging Package
SLT Premium Package
(1)
Duramax Plus Package
(1)
Skid Plate Package, Frame-Mounted Shields
Suspension Package, Off-Road
(1)
Texas Edition SLT Premium Plus Package
Heavy-Duty Power Package
Driver Alert Package I
(2)
Driver Alert Package
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
LPO, Protection Package
LPO, Hitch Package, Gooseneck Ball and Chain Tiedown Kit With Case
Z71 Off-Road Package
LPO, On The Job Package
Snow Plow Prep/Camper Package
Gooseneck/5TH Wheel Package
Gooseneck/5TH Wheel Prep Package
(2)
LPO, Assist Step and Floor Liner Package
All-Terrain HD Package, For Crew Cab Models Only
Technology Package
(1)
Mocha Steel Metallic Edition
SLT Preferred Equipment Group
Skid Plate Package
LPO, GMC Protection Package
All-Terrain HD Package
Entertainment Package
Graphite Blue Metallic Edition
Add Another Make
GMC
Models
Sierra 3500
Acadia
(46)
Caballero
Canyon
(27)
Envoy
Envoy XL
Envoy XUV
G1500
G2500
G3500
(1)
Hummer EV
(3)
Jimmy
(1)
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(1)
Savana 2500
(1)
Savana 3500
(8)
Savana 4500
Sierra 1500
(134)
Sierra 2500
(58)
Sierra 3500
(28)
Sierra EV
Sonoma
Suburban
Syclone
Terrain
(42)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(35)
Yukon XL
(22)
Sierra 3500 Trims
SLT
AT4
(2)
Classic SL
Classic SLE
Classic W/T
Denali
(15)
Denali Ultimate
(4)
Pro
(1)
SL
SLE
(1)
SLT
(5)
W/T
SLT Package
Any
Onstar Plus Package
SLT Preferred Package
(1)
LPO, Hitch Package
SLT Premium Plus Package
Sun And Navigation Package
SLT Convenience Package
(2)
License Plate Front Mounting Package
Snow Plow Prep Package
Entertainment Package, Rear Seat DVD Player
Convenience Package
Gooseneck/5th Wheel Prep Package
(2)
X31 Off-Road and Protection Package
Texas SLT Premium Package
Driver Alert Package II
(1)
EZ-Lift Tailgate Package
LPO, Cargo Convenience Package
Sierra HD Pro Safety Plus Package
LPO, GMC Interior Protection Package
Heavy Duty Front Spring/Camper Package
(1)
X31 Off-Road Package
(3)
Entertainment Package, Rear Seat DVD/Blu-Ray Player
LPO, Black Badging Package
SLT Premium Package
(1)
Duramax Plus Package
(1)
Skid Plate Package, Frame-Mounted Shields
Suspension Package, Off-Road
(1)
Texas Edition SLT Premium Plus Package
Heavy-Duty Power Package
Driver Alert Package I
(2)
Driver Alert Package
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
LPO, Protection Package
LPO, Hitch Package, Gooseneck Ball and Chain Tiedown Kit With Case
Z71 Off-Road Package
LPO, On The Job Package
Snow Plow Prep/Camper Package
Gooseneck/5TH Wheel Package
Gooseneck/5TH Wheel Prep Package
(2)
LPO, Assist Step and Floor Liner Package
All-Terrain HD Package, For Crew Cab Models Only
Technology Package
(1)
Mocha Steel Metallic Edition
SLT Preferred Equipment Group
Skid Plate Package
LPO, GMC Protection Package
All-Terrain HD Package
Entertainment Package
Graphite Blue Metallic Edition
Add Another Make
Mileage
Mileage
Any
Mileage
Any
Condition
(1 selected)
New
(7)
Used
(5)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Certified Program
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New
(7)
Used
(5)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Certified Program
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Truck Cab Size
Crew Cab
(5)
Extended Cab
(0)
Regular Cab
(0)
Crew Cab
(5)
Extended Cab
(0)
Regular Cab
(0)
Truck Bed Length
Short
(0)
Medium
(2)
Long
(3)
Include unspecified lengths
(0)
Short
(0)
Medium
(2)
Long
(3)
Include unspecified lengths
(0)
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Sponsored by Loveland Buick GMC
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New 2026 GMC Sierra 3500 Denali w/ Denali Reserve Package
74,285
MSRP
$85,285
See estimated payment
Similar Match
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Used
2024 GMC Sierra 3500
SLT
50K mi
62,997
See payment
Great Price
No Accidents
Used
2022 GMC Sierra 3500
SLT
80K mi
53,970
See payment
Good Price
No Accidents
Used
2025 GMC Sierra 3500
SLT
16K mi
64,405
See payment
No Accidents
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Find it Fast.
Keep it Affordable.
Monthly Payment
Credit Score
Excellent (740-900)
Credit Score
Excellent (740-900)
Very Good (700-739)
Good (670-699)
Fair (630-669)
Rebuilding (580-629)
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Trade-In Value
$0
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Based on 4.5% APR for mos.
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Search Available Cars
Used
2020 GMC Sierra 3500
SLT
68K mi
53,986
See payment
Good Price
No Accidents
Used
2017 GMC Sierra 3500
SLT
161K mi
36,797
See payment
No Accidents
Consider New, Similar Payment
2026 GMC Sierra 3500
Denali
6 mi
91,290
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