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Used Cars for Sale
GMC
Sierra 3500
SLT
Used GMC Sierra 3500 SLT for Sale in Boulder, CO
80302
Filters (4)
Items 1 to 2 of 5.
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(1)
2022 and older
(3)
Automatic
(4)
2006 and newer
(4)
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Make, Model & Trim
GMC
Models
Sierra 3500
Acadia
(74)
Caballero
Canyon
(46)
Envoy
(1)
Envoy XL
Envoy XUV
G1500
G2500
G3500
Hummer EV
(3)
Jimmy
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(4)
Savana 2500
(13)
Savana 3500
(12)
Savana 4500
(1)
Sierra 1500
(357)
Sierra 2500
(123)
Sierra 3500
(55)
Sierra EV
(1)
Sonoma
Suburban
(1)
Syclone
Terrain
(114)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(124)
Yukon XL
(78)
Sierra 3500 Trims
SLT
AT4
(10)
Classic SL
Classic SLE
Classic W/T
Denali
(20)
Denali Ultimate
(7)
Pro
(4)
SL
SLE
(5)
SLT
(4)
W/T
(1)
SLT Package
Any
Onstar Plus Package
(1)
SLT Preferred Package
LPO, Hitch Package
SLT Premium Plus Package
Sun And Navigation Package
SLT Convenience Package
License Plate Front Mounting Package
Snow Plow Prep Package
Entertainment Package, Rear Seat DVD Player
Convenience Package
(1)
Gooseneck/5th Wheel Prep Package
X31 Off-Road and Protection Package
Texas SLT Premium Package
Driver Alert Package II
EZ-Lift Tailgate Package
(1)
Sierra HD Pro Safety Plus Package
LPO, Cargo Convenience Package
LPO, GMC Interior Protection Package
Heavy Duty Front Spring/Camper Package
X31 Off-Road Package
Entertainment Package, Rear Seat DVD/Blu-Ray Player
LPO, Black Badging Package
SLT Premium Package
Duramax Plus Package
Skid Plate Package, Frame-Mounted Shields
(1)
Suspension Package, Off-Road
(1)
Texas Edition SLT Premium Plus Package
Heavy-Duty Power Package
(1)
Driver Alert Package I
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
(1)
Driver Alert Package
(1)
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
LPO, Assist Step and Floor Liner Package
Gooseneck/5TH Wheel Prep Package
All-Terrain HD Package, For Crew Cab Models Only
Technology Package
Mocha Steel Metallic Edition
SLT Preferred Equipment Group
Skid Plate Package
(1)
LPO, GMC Protection Package
All-Terrain HD Package
Entertainment Package
Graphite Blue Metallic Edition
Add Another Make
GMC
Models
Sierra 3500
Acadia
(74)
Caballero
Canyon
(46)
Envoy
(1)
Envoy XL
Envoy XUV
G1500
G2500
G3500
Hummer EV
(3)
Jimmy
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(4)
Savana 2500
(13)
Savana 3500
(12)
Savana 4500
(1)
Sierra 1500
(357)
Sierra 2500
(123)
Sierra 3500
(55)
Sierra EV
(1)
Sonoma
Suburban
(1)
Syclone
Terrain
(114)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(124)
Yukon XL
(78)
Sierra 3500 Trims
SLT
AT4
(10)
Classic SL
Classic SLE
Classic W/T
Denali
(20)
Denali Ultimate
(7)
Pro
(4)
SL
SLE
(5)
SLT
(4)
W/T
(1)
SLT Package
Any
Onstar Plus Package
(1)
SLT Preferred Package
LPO, Hitch Package
SLT Premium Plus Package
Sun And Navigation Package
SLT Convenience Package
License Plate Front Mounting Package
Snow Plow Prep Package
Entertainment Package, Rear Seat DVD Player
Convenience Package
(1)
Gooseneck/5th Wheel Prep Package
X31 Off-Road and Protection Package
Texas SLT Premium Package
Driver Alert Package II
EZ-Lift Tailgate Package
(1)
Sierra HD Pro Safety Plus Package
LPO, Cargo Convenience Package
LPO, GMC Interior Protection Package
Heavy Duty Front Spring/Camper Package
X31 Off-Road Package
Entertainment Package, Rear Seat DVD/Blu-Ray Player
LPO, Black Badging Package
SLT Premium Package
Duramax Plus Package
Skid Plate Package, Frame-Mounted Shields
(1)
Suspension Package, Off-Road
(1)
Texas Edition SLT Premium Plus Package
Heavy-Duty Power Package
(1)
Driver Alert Package I
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
(1)
Driver Alert Package
(1)
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
LPO, Assist Step and Floor Liner Package
Gooseneck/5TH Wheel Prep Package
All-Terrain HD Package, For Crew Cab Models Only
Technology Package
Mocha Steel Metallic Edition
SLT Preferred Equipment Group
Skid Plate Package
(1)
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
(3)
Used
(4)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Certified Program
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New
(3)
Used
(4)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Certified Program
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Color
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Body Style
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Truck Cab Size
Crew Cab
(3)
Extended Cab
(0)
Regular Cab
(0)
Crew Cab
(3)
Extended Cab
(0)
Regular Cab
(0)
Truck Bed Length
Short
(0)
Medium
(1)
Long
(2)
Include unspecified lengths
(1)
Short
(0)
Medium
(1)
Long
(2)
Include unspecified lengths
(1)
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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New 2026 GMC Sierra 3500 SLT
83,275
MSRP
$90,525
Similar Match
75
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Used
2019 GMC Sierra 3500
SLT
102K mi
42,243
See payment
Dealer Fees Included
Used
2026 GMC Sierra 3500
SLT
400 mi
76,593
See payment
Dealer Fees Included
No Accidents
Price Drop
Used
2019 GMC Sierra 3500
SLT
102K mi
42,243
See payment
Dealer Fees Included
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Keep it Affordable.
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)
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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
2007 GMC Sierra 3500
SLT
227K mi
16,500
See payment
No Accidents
Newly Listed
Used
2006 GMC Sierra 3500
SLT
165K mi
27,990
See payment
Dealer Fees Included
No Accidents
Consider Buying New
2026 GMC Sierra 3500
Denali Ultimate
4 mi
106,457
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