• SLT
  • SLE
  • Denali
  • Work Truck
  • SL
  • Base
  • Standard
  • 4WD
  • Flexible-Fuel
  • 8 Cyl
  • White
  • Well-Equipped
  • Gasoline
  • Keyless Entry
  • Black
  • Heated Seats
  • Gray
  • Silver
  • Navigation System
  • CD (Single Disc)
  • 2014
  • Blue
  • 2015
  • Great Deal
  • One Owner
  • Rear-View Camera
  • OnStar Communication System
  • Low Mileage
  • Automatic
  • Good Deal
  • 2013
  • 2012
  • Handsfree/Bluetooth Integration
  • Remote Start
  • MP3
  • 2011
  • Satellite Radio
  • 2016
  • AWD
  • 2008
  • Low Fuel Costs
  • Red
  • RWD
  • Beige
  • 2010
  • 2007
  • 2005
  • 2006
  • 2009
  • Going Fast
  • Lower Than Average Mileage
  • 2017
  • 2004
  • 2002
  • Brown
  • Certified Pre-Owned
  • Fair Price
  • Bronze
  • 1999
  • 2001
  • 2003

Price Range

$0 $60,000+

Max Mileage

New $80,000+

MPG

Min 14 Max 50

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307 Results for

Used GMC Sierra 1500 For Sale in Fort Collins, CO

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Photo 1: Iridium Metallic 2015 GMC Sierra 1500 Denali in Brighton, CO exterior view from front driver's side
Photo 2: Iridium Metallic 2015 GMC Sierra 1500 Denali in Brighton, CO
Photo 3: interior dashboard and console 2015 GMC Sierra 1500 Denali in Brighton, CO
Photo 4: cockpit view from driver’s seat 2015 GMC Sierra 1500 Denali in Brighton, CO
Photo 5: 2015 GMC Sierra 1500 Denali with  in Brighton, CO

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Call Dealer
  • Get Directions
$39,987

2015 GMC Sierra 1500 Denali

42,152 miles Brighton, CO

Photo 1: Summit White 2012 GMC Sierra 1500 Denali in Brighton, CO exterior view from front driver's side
Photo 2: Summit White 2012 GMC Sierra 1500 Denali in Brighton, CO
Photo 3: interior dashboard and console 2012 GMC Sierra 1500 Denali in Brighton, CO
Photo 4: cockpit view from driver’s seat 2012 GMC Sierra 1500 Denali in Brighton, CO
Photo 5: 2012 GMC Sierra 1500 Denali with  in Brighton, CO

Automatic / AWD / 8 Cyl
12 mpg city / 18 mpg hwy

  • Call Dealer
  • Get Directions
$26,484

2012 GMC Sierra 1500 Denali

84,804 miles Brighton, CO

Photo 1: Quicksilver Metallic 2016 GMC Sierra 1500 SLT in Brighton, CO exterior view from front driver's side
Photo 2: Quicksilver Metallic 2016 GMC Sierra 1500 SLT in Brighton, CO
Photo 3: interior dashboard and console 2016 GMC Sierra 1500 SLT in Brighton, CO
Photo 4: cockpit view from driver’s seat 2016 GMC Sierra 1500 SLT in Brighton, CO
Photo 5: 2016 GMC Sierra 1500 SLT with  in Brighton, CO

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Call Dealer
  • Get Directions
$43,486

2016 GMC Sierra 1500 SLT

20,690 miles Brighton, CO

Photo 1: Quicksilver Metallic 2015 GMC Sierra 1500 SLE in Brighton, CO exterior view from front driver's side
Photo 2: Quicksilver Metallic 2015 GMC Sierra 1500 SLE in Brighton, CO
Photo 3: interior dashboard and console 2015 GMC Sierra 1500 SLE in Brighton, CO
Photo 4: cockpit view from driver’s seat 2015 GMC Sierra 1500 SLE in Brighton, CO
Photo 5: 2015 GMC Sierra 1500 SLE with  in Brighton, CO

Automatic / RWD / 8 Cyl
16 mpg city / 23 mpg hwy

  • Call Dealer
  • Get Directions
$29,987

2015 GMC Sierra 1500 SLE

28,576 miles Brighton, CO

Photo 1: White Frost Tri-Coat 2016 GMC Sierra 1500 Denali in Brighton, CO exterior view from front driver's side
Photo 2: White Frost Tri-Coat 2016 GMC Sierra 1500 Denali in Brighton, CO
Photo 3: interior dashboard and console 2016 GMC Sierra 1500 Denali in Brighton, CO
Photo 4: cockpit view from driver’s seat 2016 GMC Sierra 1500 Denali in Brighton, CO
Photo 5: 2016 GMC Sierra 1500 Denali with  in Brighton, CO

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Call Dealer
  • Get Directions
$44,987

2016 GMC Sierra 1500 Denali

16,560 miles Brighton, CO

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Call Dealer
  • Get Directions
$35,486

2014 GMC Sierra 1500 SLT

41,799 miles Brighton, CO

Photo 1:  2013 GMC Sierra 1500 SLE in Boulder, CO
Photo 2: interior dashboard and console 2013 GMC Sierra 1500 SLE in Boulder, CO
Photo 3: cockpit view from driver’s seat 2013 GMC Sierra 1500 SLE in Boulder, CO
Photo 4: 2013 GMC Sierra 1500 SLE with  in Boulder, CO
Photo 5:  2013 GMC Sierra 1500 SLE in Boulder, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Call Dealer
  • Get Directions
$24,072

2013 GMC Sierra 1500 SLE

89,649 miles Boulder, CO

Automatic / 4WD / 8 Cyl
14 mpg city / 18 mpg hwy

  • Call Dealer
  • Get Directions
$10,377

2006 GMC Sierra 1500 SL

190,928 miles Longmont, CO

Photo 1:  2007 GMC Sierra 1500 SLE SLE-1 in Longmont, CO exterior view from front driver's side
Photo 2:  2007 GMC Sierra 1500 SLE SLE-1 in Longmont, CO
Photo 3: cockpit view from driver’s seat 2007 GMC Sierra 1500 SLE SLE-1 in Longmont, CO
Photo 4: 2007 GMC Sierra 1500 SLE SLE-1 with  in Longmont, CO
Photo 5:  2007 GMC Sierra 1500 SLE SLE-1 in Longmont, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
13 mpg city / 18 mpg hwy

  • Get Directions
$12,650

2007 GMC Sierra 1500 SLE SLE-1

115,382 miles Longmont, CO

Photo 1:  2014 GMC Sierra 1500 SLT in Longmont, CO exterior view from front driver's side
Photo 2:  2014 GMC Sierra 1500 SLT in Longmont, CO
Photo 3: 2014 GMC Sierra 1500 SLT with  in Longmont, CO
Photo 4:  2014 GMC Sierra 1500 SLT in Longmont, CO front view of grill, headlights, hood and windshield
Photo 5: 2014 GMC Sierra 1500 SLT with  in Longmont, CO

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$33,131

2014 GMC Sierra 1500 SLT

49,679 miles Longmont, CO

Photo 1: Midnight Blue Metallic 2012 GMC Sierra 1500 SLE in Thornton, CO exterior view from front driver's side
Photo 2: interior dashboard and console 2012 GMC Sierra 1500 SLE in Thornton, CO
Photo 3: Midnight Blue Metallic 2012 GMC Sierra 1500 SLE in Thornton, CO exterior view of driver's side
Photo 4: Midnight Blue Metallic 2012 GMC Sierra 1500 SLE in Thornton, CO exterior view from rear driver's side
Photo 5: 2012 GMC Sierra 1500 SLE with  in Thornton, CO

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Get Directions
$22,577

2012 GMC Sierra 1500 SLE

73,489 miles Thornton, CO

Photo 1:  2015 GMC Sierra 1500 SLT in Thornton, CO
Photo 2: interior dashboard and console 2015 GMC Sierra 1500 SLT in Thornton, CO
Photo 3: 2015 GMC Sierra 1500 SLT with  in Thornton, CO
Photo 4:  2015 GMC Sierra 1500 SLT in Thornton, CO front view of grill, headlights, hood and windshield
Photo 5: 2015 GMC Sierra 1500 SLT with  in Thornton, CO

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$38,599

2015 GMC Sierra 1500 SLT

28,049 miles Thornton, CO

Photo 1: 2015 GMC Sierra 1500 SLT with  in Longmont, CO
Photo 2: 2015 GMC Sierra 1500 SLT with  in Longmont, CO
Photo 3: 2015 GMC Sierra 1500 SLT with  in Longmont, CO
Photo 4:  2015 GMC Sierra 1500 SLT in Longmont, CO exterior view of driver's side
Photo 5:  2015 GMC Sierra 1500 SLT in Longmont, CO exterior view of passenger side

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$38,970

2015 GMC Sierra 1500 SLT

22,185 miles Longmont, CO

Photo 1:  2013 GMC Sierra 1500 SLE in Fort Collins, CO exterior view from front driver's side
Photo 2:  2013 GMC Sierra 1500 SLE in Fort Collins, CO
Photo 3: interior dashboard and console 2013 GMC Sierra 1500 SLE in Fort Collins, CO
Photo 4: cockpit view from driver’s seat 2013 GMC Sierra 1500 SLE in Fort Collins, CO
Photo 5:  2013 GMC Sierra 1500 SLE in Fort Collins, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Get Directions
$27,900

2013 GMC Sierra 1500 SLE

11,202 miles Fort Collins, CO

Photo 1: Sonoma Red Metallic 2014 GMC Sierra 1500 Denali in Fort Collins, CO exterior view from front driver's side
Photo 2: Sonoma Red Metallic 2014 GMC Sierra 1500 Denali in Fort Collins, CO
Photo 3: cockpit view from driver’s seat 2014 GMC Sierra 1500 Denali in Fort Collins, CO
Photo 4: 2014 GMC Sierra 1500 Denali with  in Fort Collins, CO
Photo 5: Sonoma Red Metallic 2014 GMC Sierra 1500 Denali in Fort Collins, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$37,499

2014 GMC Sierra 1500 Denali

22,778 miles Fort Collins, CO

Photo 1:  2015 GMC Sierra 1500 SLT in Cheyenne, WY exterior view from front driver's side
Photo 2:  2015 GMC Sierra 1500 SLT in Cheyenne, WY
Photo 3: cockpit view from driver’s seat 2015 GMC Sierra 1500 SLT in Cheyenne, WY
Photo 4:  2015 GMC Sierra 1500 SLT in Cheyenne, WY front view of grill, headlights, hood and windshield
Photo 5: 2015 GMC Sierra 1500 SLT with  in Cheyenne, WY

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$35,977

2015 GMC Sierra 1500 SLT

52,390 miles Cheyenne, WY

Photo 1:  2015 GMC Sierra 1500 SLT in Loveland, CO exterior view from front driver's side
Photo 2:  2015 GMC Sierra 1500 SLT in Loveland, CO front view of grill, headlights, hood and windshield
Photo 3:  2015 GMC Sierra 1500 SLT in Loveland, CO exterior view of driver's side
Photo 4:  2015 GMC Sierra 1500 SLT in Loveland, CO exterior view from rear passenger side
Photo 5:  2015 GMC Sierra 1500 SLT in Loveland, CO view of rear bumper

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$36,876

2015 GMC Sierra 1500 SLT

34,539 miles Loveland, CO

Photo 1:  2015 GMC Sierra 1500 SLT in Longmont, CO exterior view from front driver's side
Photo 2:  2015 GMC Sierra 1500 SLT in Longmont, CO
Photo 3: cockpit view from driver’s seat 2015 GMC Sierra 1500 SLT in Longmont, CO
Photo 4: 2015 GMC Sierra 1500 SLT with  in Longmont, CO
Photo 5:  2015 GMC Sierra 1500 SLT in Longmont, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$33,999

2015 GMC Sierra 1500 SLT

41,290 miles Longmont, CO

Photo 1: Summit White 2014 GMC Sierra 1500 SLT in Longmont, CO exterior view from front driver's side
Photo 2: Summit White 2014 GMC Sierra 1500 SLT in Longmont, CO
Photo 3: cockpit view from driver’s seat 2014 GMC Sierra 1500 SLT in Longmont, CO
Photo 4: 2014 GMC Sierra 1500 SLT with  in Longmont, CO
Photo 5: Summit White 2014 GMC Sierra 1500 SLT in Longmont, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$35,378

2014 GMC Sierra 1500 SLT

35,236 miles Longmont, CO

Photo 1:  2015 GMC Sierra 1500 SLT in Greeley, CO exterior view from front driver's side
Photo 2:  2015 GMC Sierra 1500 SLT in Greeley, CO
Photo 3:  2015 GMC Sierra 1500 SLT in Greeley, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
16 mpg city / 22 mpg hwy

  • Get Directions
$37,987

2015 GMC Sierra 1500 SLT

45,623 miles Greeley, CO

Photo 1:  2013 GMC Sierra 1500 SLT in Fort Collins, CO exterior view from front driver's side
Photo 2:  2013 GMC Sierra 1500 SLT in Fort Collins, CO
Photo 3: interior dashboard and console 2013 GMC Sierra 1500 SLT in Fort Collins, CO
Photo 4: cockpit view from driver’s seat 2013 GMC Sierra 1500 SLT in Fort Collins, CO
Photo 5:  2013 GMC Sierra 1500 SLT in Fort Collins, CO front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Get Directions
$28,400

2013 GMC Sierra 1500 SLT

56,051 miles Fort Collins, CO

Photo 1:  2012 GMC Sierra 1500 Work Truck in Longmont, CO exterior view from front driver's side
Photo 2:  2012 GMC Sierra 1500 Work Truck in Longmont, CO
Photo 3: interior dashboard and console 2012 GMC Sierra 1500 Work Truck in Longmont, CO
Photo 4: cockpit view from driver’s seat 2012 GMC Sierra 1500 Work Truck in Longmont, CO
Photo 5:  2012 GMC Sierra 1500 Work Truck in Longmont, CO front view of grill, headlights, hood and windshield

Automatic / RWD / 6 Cyl
15 mpg city / 20 mpg hwy

  • Get Directions
$8,925

2012 GMC Sierra 1500 Work Truck

159,927 miles Longmont, CO

Photo 1:  2013 GMC Sierra 1500 SLE in Cheyenne, WY exterior view from front driver's side
Photo 2:  2013 GMC Sierra 1500 SLE in Cheyenne, WY
Photo 3: cockpit view from driver’s seat 2013 GMC Sierra 1500 SLE in Cheyenne, WY
Photo 4: 2013 GMC Sierra 1500 SLE with  in Cheyenne, WY
Photo 5:  2013 GMC Sierra 1500 SLE in Cheyenne, WY front view of grill, headlights, hood and windshield

Automatic / 4WD / 8 Cyl
15 mpg city / 21 mpg hwy

  • Get Directions
$20,977

2013 GMC Sierra 1500 SLE

133,001 miles Cheyenne, WY

Photo 1:  2005 GMC Sierra 1500 SLE in Longmont, CO exterior view from front driver's side
Photo 2:  2005 GMC Sierra 1500 SLE in Longmont, CO
Photo 3: interior dashboard and console 2005 GMC Sierra 1500 SLE in Longmont, CO
Photo 4: cockpit view from driver’s seat 2005 GMC Sierra 1500 SLE in Longmont, CO
Photo 5: 2005 GMC Sierra 1500 SLE with  in Longmont, CO

Automatic / 4WD / 8 Cyl
13 mpg city / 17 mpg hwy

  • Get Directions
$13,999

2005 GMC Sierra 1500 SLE

131,005 miles Longmont, CO