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Used Cars for Sale
GMC
Sierra 3500
SLE
Used GMC Sierra 3500 SLE for Sale in Boulder, CO
80302
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Make, Model & Trim
GMC
Models
Sierra 3500
Acadia
(91)
Caballero
Canyon
(48)
Envoy
(1)
Envoy XL
Envoy XUV
G1500
G2500
G3500
(1)
Hummer EV
(6)
Jimmy
(1)
Other GMC Models
S15 Jimmy
S15 Pickup
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Savana 1500
(3)
Savana 2500
(13)
Savana 3500
(13)
Savana 4500
(1)
Sierra 1500
(392)
Sierra 2500
(132)
Sierra 3500
(61)
Sierra EV
(1)
Sonoma
Suburban
(1)
Syclone
Terrain
(111)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(119)
Yukon XL
(77)
Sierra 3500 Trims
SLE
AT4
(13)
Classic SL
Classic SLE
Classic W/T
Denali
(23)
Denali Ultimate
(4)
Pro
(1)
SL
SLE
(6)
SLT
(9)
W/T
(1)
SLE Package
Any
Onstar Plus Package
SLE Value Package
(2)
SLE Convenience Package
(2)
LPO, Hitch Package
(1)
Preferred Package
(1)
SLE Convenience Package, For Crew Cab and Double Cab
HD SLE Premium Package
SLE2 Audio Package
Off-Road Skid Plate Pkg
Snow Plow Prep Package
SLE Fleet Preferred Package
Convenience Package
(1)
1SA Driver Alert Package I
Seat, Cloth Rear With Storage Package, 60/40 Folding Bench
License Plate Front Mounting Package
Entertainment Package, Rear Seat DVD Player
Gooseneck/5th Wheel Prep Package
(2)
X31 Off-Road and Protection Package
(1)
Heavy Duty Front Spring Package
SLE Fleet Convenience Package
EZ-Lift Tailgate Package
Ambulance/Fire/Rescue Package
Sierra HD Pro Safety Plus Package
(2)
Texas Edition
Driver Alert Package II
SLE Heated Package
Heavy Duty Front Spring/Camper Package
(1)
X31 Off-Road Package
(1)
LPO, Black Badging Package
Remote Start Package
(2)
Skid Plate Package, Frame-Mounted Shields
Suspension Package, Off-Road
(1)
Snow Plow Prep Pkg
SLE Heat Package
(1)
Heavy-Duty Power Package
Driver Alert Package I
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
Z71 Off-Road Package
LPO, Hitch Package, Gooseneck Ball and Chain Tiedown Kit With Case
LPO, Protection Package
LPO, On The Job Package
Driver Alert Package
Snow Plow Prep/Camper Package
(1)
Gooseneck/5TH Wheel Prep Package
(2)
SLE Preferred Package
(1)
Gooseneck/5TH Wheel Package
LPO, Assist Step and Floor Liner Package
(1)
HD SLE Gas Preferred Plus Package
HD SLE Preferred Plus Package
Ambulance Package
LPO, GMC Protection Package
Skid Plate Package
Fleet Comfort Package
All-Terrain HD Package
Seat, Cloth Rear With Storage Package, 60/40 Folding Bench For Crew Cab Models
SLE Fleet Convenience Package, For Crew Cab and Double Cab
SLE1 Audio Package
Graphite Blue Metallic Edition
Add Another Make
GMC
Models
Sierra 3500
Acadia
(91)
Caballero
Canyon
(48)
Envoy
(1)
Envoy XL
Envoy XUV
G1500
G2500
G3500
(1)
Hummer EV
(6)
Jimmy
(1)
Other GMC Models
S15 Jimmy
S15 Pickup
Safari
Savana 1500
(3)
Savana 2500
(13)
Savana 3500
(13)
Savana 4500
(1)
Sierra 1500
(392)
Sierra 2500
(132)
Sierra 3500
(61)
Sierra EV
(1)
Sonoma
Suburban
(1)
Syclone
Terrain
(111)
TopKick C4500
TopKick C5500
Typhoon
Yukon
(119)
Yukon XL
(77)
Sierra 3500 Trims
SLE
AT4
(13)
Classic SL
Classic SLE
Classic W/T
Denali
(23)
Denali Ultimate
(4)
Pro
(1)
SL
SLE
(6)
SLT
(9)
W/T
(1)
SLE Package
Any
Onstar Plus Package
SLE Value Package
(2)
SLE Convenience Package
(2)
LPO, Hitch Package
(1)
Preferred Package
(1)
SLE Convenience Package, For Crew Cab and Double Cab
HD SLE Premium Package
SLE2 Audio Package
Off-Road Skid Plate Pkg
Snow Plow Prep Package
SLE Fleet Preferred Package
Convenience Package
(1)
1SA Driver Alert Package I
Seat, Cloth Rear With Storage Package, 60/40 Folding Bench
License Plate Front Mounting Package
Entertainment Package, Rear Seat DVD Player
Gooseneck/5th Wheel Prep Package
(2)
X31 Off-Road and Protection Package
(1)
Heavy Duty Front Spring Package
SLE Fleet Convenience Package
EZ-Lift Tailgate Package
Ambulance/Fire/Rescue Package
Sierra HD Pro Safety Plus Package
(2)
Texas Edition
Driver Alert Package II
SLE Heated Package
Heavy Duty Front Spring/Camper Package
(1)
X31 Off-Road Package
(1)
LPO, Black Badging Package
Remote Start Package
(2)
Skid Plate Package, Frame-Mounted Shields
Suspension Package, Off-Road
(1)
Snow Plow Prep Pkg
SLE Heat Package
(1)
Heavy-Duty Power Package
Driver Alert Package I
Gooseneck/5TH Wheel Prep Package -- Hitch Platform to Accept Gooseneck or Fifth Wheel Hitch.
Z71 Off-Road Package
LPO, Hitch Package, Gooseneck Ball and Chain Tiedown Kit With Case
LPO, Protection Package
LPO, On The Job Package
Driver Alert Package
Snow Plow Prep/Camper Package
(1)
Gooseneck/5TH Wheel Prep Package
(2)
SLE Preferred Package
(1)
Gooseneck/5TH Wheel Package
LPO, Assist Step and Floor Liner Package
(1)
HD SLE Gas Preferred Plus Package
HD SLE Preferred Plus Package
Ambulance Package
LPO, GMC Protection Package
Skid Plate Package
Fleet Comfort Package
All-Terrain HD Package
Seat, Cloth Rear With Storage Package, 60/40 Folding Bench For Crew Cab Models
SLE Fleet Convenience Package, For Crew Cab and Double Cab
SLE1 Audio Package
Graphite Blue Metallic Edition
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Used
(6)
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Used
(6)
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Third-Party Certified
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Crew Cab
(3)
Extended Cab
(1)
Regular Cab
(0)
Crew Cab
(3)
Extended Cab
(1)
Regular Cab
(0)
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Short
(0)
Medium
(2)
Long
(4)
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Medium
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Newly Listed
Used 2020 GMC Sierra 3500 Denali w/ Denali Ultimate Package
48,994
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Used
2024 GMC Sierra 3500
SLE
128K mi
45,000
See payment
Great Price
Dealer Fees Included
No Accidents
Used
2013 GMC Sierra 3500
SLE
134K mi
22,911
See payment
Used
2024 GMC Sierra 3500
SLE
47K mi
48,736
See payment
Good Price
Dealer Fees Included
No Accidents
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Find it Fast.
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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Newly Listed
Used
2025 GMC Sierra 3500
SLE
20K mi
57,740
See payment
Dealer Fees Included
No Accidents
Used
2008 GMC Sierra 3500
SLE
204K mi
18,624
See payment
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2026 GMC Sierra 2500
AT4
4 mi
82,022
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Used
2026 GMC Sierra 3500
SLE
15K mi
67,813
See payment
No Accidents
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