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GMC
Sierra 3500
SLT
GMC Sierra 3500 SLT for Sale in Fort Collins, CO
80521
Filters (3)
Items 1 to 2 of 4.
2016 and newer
(8)
2022 and older
(1)
AWD/4WD
(8)
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(1)
Make, Model & Trim
GMC
Models
Sierra 3500
Acadia
(119)
Caballero
Canyon
(74)
Envoy
Envoy XL
Envoy XUV
G1500
G2500
G3500
(1)
Hummer EV
(35)
Jimmy
(1)
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(1)
Savana 2500
(10)
Savana 3500
(11)
Savana 4500
Sierra 1500
(489)
Sierra 2500
(247)
Sierra 3500
(102)
Sierra EV
(4)
Sonoma
Suburban
Syclone
Terrain
(94)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(69)
Yukon XL
(54)
Sierra 3500 Trims
SLT
AT4
(5)
Classic SL
Classic SLE
Classic W/T
Denali
(28)
Denali Ultimate
(8)
Pro
(48)
SL
SLE
(3)
SLT
(8)
W/T
SLT Package
Any
Onstar Plus Package
SLT Preferred Package
(2)
LPO, Hitch Package
(3)
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
(6)
X31 Off-Road and Protection Package
(1)
Texas SLT Premium Package
Driver Alert Package II
(1)
EZ-Lift Tailgate Package
Sierra HD Pro Safety Plus Package
(1)
LPO, Cargo Convenience 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
(2)
SLT Premium Package
(5)
Duramax Plus Package
Skid Plate Package, Frame-Mounted Shields
Suspension Package, Off-Road
Texas Edition SLT Premium Plus Package
Heavy-Duty Power Package
Driver Alert Package I
(1)
Driver Alert Package
LPO, Protection Package
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
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
(6)
LPO, Assist Step and Floor Liner Package
(1)
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
(119)
Caballero
Canyon
(74)
Envoy
Envoy XL
Envoy XUV
G1500
G2500
G3500
(1)
Hummer EV
(35)
Jimmy
(1)
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(1)
Savana 2500
(10)
Savana 3500
(11)
Savana 4500
Sierra 1500
(489)
Sierra 2500
(247)
Sierra 3500
(102)
Sierra EV
(4)
Sonoma
Suburban
Syclone
Terrain
(94)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(69)
Yukon XL
(54)
Sierra 3500 Trims
SLT
AT4
(5)
Classic SL
Classic SLE
Classic W/T
Denali
(28)
Denali Ultimate
(8)
Pro
(48)
SL
SLE
(3)
SLT
(8)
W/T
SLT Package
Any
Onstar Plus Package
SLT Preferred Package
(2)
LPO, Hitch Package
(3)
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
(6)
X31 Off-Road and Protection Package
(1)
Texas SLT Premium Package
Driver Alert Package II
(1)
EZ-Lift Tailgate Package
Sierra HD Pro Safety Plus Package
(1)
LPO, Cargo Convenience 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
(2)
SLT Premium Package
(5)
Duramax Plus Package
Skid Plate Package, Frame-Mounted Shields
Suspension Package, Off-Road
Texas Edition SLT Premium Plus Package
Heavy-Duty Power Package
Driver Alert Package I
(1)
Driver Alert Package
LPO, Protection Package
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
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
(6)
LPO, Assist Step and Floor Liner Package
(1)
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
New
(6)
Used
(2)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Certified Program Details
New
(6)
Used
(2)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Certified Program Details
Color
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Body Style
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Truck Cab Size
Crew Cab
(4)
Extended Cab
(0)
Regular Cab
(0)
Crew Cab
(4)
Extended Cab
(0)
Regular Cab
(0)
Truck Bed Length
Short
(0)
Medium
(3)
Long
(5)
Include unspecified lengths
(0)
Short
(0)
Medium
(3)
Long
(5)
Include unspecified lengths
(0)
Vehicle History
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Features
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Fuel Economy
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Transmission
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Cylinders
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Engine Displacement
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Number of Seats
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Number of Doors
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Purchase Options
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8 Matches
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Used
2020 GMC Sierra 3500
SLT
68K mi
51,986
See payment
Great Price
No Accidents
Used
2025 GMC Sierra 3500
SLT
16K mi
63,997
See payment
No Accidents
360°
New
2026 GMC Sierra 3500
SLT
5 mi
81,415
MSRP
$87,665
See payment
My Wallet
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Monthly Payment
Credit Rating
Excellent (740-900)
Credit Rating
Excellent (740-900)
Very Good (700-739)
Good (670-699)
Fair (630-669)
Rebuilding (580-629)
Down Payment
Trade-In Value
$0
Trade-In Value
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Amount Owed on Trade-In
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$
Based on 4.5% APR for mos.
Update Settings
Search Available Cars
New
2026 GMC Sierra 3500
SLT
5 mi
109,086
MSRP
$109,991
See payment
Dealer Fees Included
New
2026 GMC Sierra 3500
SLT
5 mi
86,220
MSRP
$89,625
See payment
Incentive
Consider New, Similar Payment
2026 GMC Sierra 3500
Pro
6 mi
65,452
New
2025 GMC Sierra 3500
SLT
17 mi
81,940
MSRP
$86,940
See payment
Incentive
Item 1 of 10.
How many passenger seats do you need in your truck?
Any
3 or less
4
5
6
Do you want
Adaptive Cruise Control?
Automatically adjusts your speed to maintain a safe distance from the car ahead.
Yes, Update Filter
No Preference
Do you want
Backup Camera?
See behind your vehicle while reversing with a live video feed to avoid obstacles.
Yes, Update Filter
No Preference
Do you want
Bluetooth, Hands-Free?
Make and receive calls safely through your car's audio system without touching your phone.
Yes, Update Filter
No Preference
Do you want
Cross Traffic Alert?
Warns you of approaching vehicles from the sides when backing out of a parking spot.
Yes, Update Filter
No Preference
Do you want
Keyless Start?
Start your car with the push of a button while the key fob stays in your pocket or bag.
Yes, Update Filter
No Preference
Do you want
Lane Departure Warning?
Alerts you if your car begins to drift out of its lane without signaling.
Yes, Update Filter
No Preference
Do you want
Premium Audio?
Enjoy high-quality sound with advanced speakers for a better listening experience.
Yes, Update Filter
No Preference
Do you want
Remote Engine Start?
Start your car from a distance to preheat or cool the cabin before you get in.
Yes, Update Filter
No Preference
Do you want
Security System?
Alerts you with a loud alarm if someone tries to break into your vehicle.
Yes, Update Filter
No Preference
New
2026 GMC Sierra 3500
SLT
20 mi
87,135
MSRP
$87,635
See payment
Incentive
New
2026 GMC Sierra 3500
SLT
25 mi
88,560
MSRP
$89,060
See payment
Incentive
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