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  • $23,595
    good price
    $2,069 below market
    • 139,584 miles
    • No accidents, 1 owner, personal use
    • 5'9” bed, 6.2l, 8cyl
    • Les Stanford Buick GMC (332 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Ferndale, MI / 332 miles away from Freeport, IL

    Guarantee credit approval regardless of your past credit history. Please call 248-206-6600 for your immediate preapproval....Sierra 1500 Denali is nic...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GTU2PEJ4GG218325
    Stock: P6963A
    Certified Pre-Owned: No
    Listed since: 06-17-2025

  • $24,500
    fair price
    $520 below market
    • 114,570 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Minnesota Truck Headquarters of Forest Lake (266 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Forest Lake, MN / 266 miles away from Freeport, IL

    2016 GMC Sierra 1500 SLT w/ All Terrain Pkg / Sunroof EcoTec3 5.3L V8 4WD 8-Speed Automatic with Overdrive Onyx Black w/ All Terrain Pkg / Sunroof 4D ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2NEC9GG130246
    Stock: FD12660
    Certified Pre-Owned: No
    Listed since: 08-06-2025

  • New Listing
    $17,500
    good price
    $1,402 below market
    • 159,209 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Shea Buick GMC (302 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Flint, MI / 302 miles away from Freeport, IL

    Welcome to Shea Automotive! We have 800+ used cars in ONE LOCATION! Stop in at 2100 S Linden Rd. Flint, MI 48532 or call 810-732-7500 to schedule a te...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VEC6EG301600
    Stock: P34906
    Certified Pre-Owned: No
    Listed since: 09-24-2025

  • New Listing
    $12,000
    good price
    $2,062 below market
    • 211,689 miles
    • 2 accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Shea Buick GMC (302 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Flint, MI / 302 miles away from Freeport, IL

    Welcome to Shea Automotive! We have 800+ used cars in ONE LOCATION! Stop in at 2100 S Linden Rd. Flint, MI 48532 or call 810-732-7500 to schedule a te...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GTU2UEC4EG549466
    Stock: 25-3144B
    Certified Pre-Owned: No
    Listed since: 09-18-2025

  • Advertisement

    7 Offers Nearby

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 5 Colors
    • 1 Trim
    • 7 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
    • 118,495 miles
    • Frame damage reported, 4 owners, corporate fleet vehicle
    • 6'7” bed, 5.3l, 8cyl
    • Unlimited Auto Group (341 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in West Chester, OH / 341 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Issue reported

    Salvage Vehicle: No

    Frame Damage: Yes

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GTV2UECXFZ317699
    Stock: 317699
    Certified Pre-Owned: No

  • $18,000
    fair price
    $54 below market
    • 52,143 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 8'2” bed, 5.3l, 8cyl
    • Taylor Chrysler Dodge Jeep Ram (121 mi away)
    • Upgraded Headlights
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    • Trip Computer
    Close

    Located in Bourbonnais, IL / 121 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GTN1LEC5GZ905377
    Stock: B5174B
    Certified Pre-Owned: No
    Listed since: 09-12-2025

  • $18,933
    fair price
    $578 below market
    • 115,907 miles
    • No accidents, 2 owners, personal use
    • 6'7” bed
    • Titan Auto Sales (104 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    Close

    Located in Worth, IL / 104 miles away from Freeport, IL

    Introducing the 2016 GMC Sierra 1500 SLE, a powerhouse of performance and sophistication that stands as a testament to GMC's commitment to excellence ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GTV2MEH2GZ295050
    Stock: R6787
    Certified Pre-Owned: No

  • $16,995
    fair price
    $163 above market
    • 168,987 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • NorthSide Ford Lincoln (225 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Effingham, IL / 225 miles away from Freeport, IL

    Delivers 22 Highway MPG and 16 City MPG! This GMC Sierra 1500 boasts a Gas/Ethanol V8 5.3L/325 engine powering this Automatic transmission. UNDERBODY ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VEC3EG335736
    Stock: 0364A
    Certified Pre-Owned: No
    Listed since: 08-12-2025

  • Advertisement

    7 Offers Nearby

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 5 Colors
    • 1 Trim
    • 7 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • New Listing
    • 162,718 miles
    • 2 accidents, 3 owners, personal use only
    • 6'7” bed, 6.2l, 8cyl
    • Unlimited Auto Group (341 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in West Chester, OH / 341 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GTU2VEJ5FG514439
    Stock: 514439
    Certified Pre-Owned: No

  • $19,932
    fair price
    $1,047 below market
    • 92,449 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 6'7” bed
    • Team Toyota (485 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    Close

    Located in Steubenville, OH / 485 miles away from Freeport, IL

    Take a look at this dependable and sharp-looking 2016 GMC Sierra 1500 SLE Double Cab V6 4x4a perfect blend of professional-grade performance, comfort,...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GTV2MEH3GZ308310
    Stock: BT551A2
    Certified Pre-Owned: No
    Listed since: 07-30-2025

  • $19,998
    good price
    $2,179 below market
    • 128,199 miles
    • 1 accident, 3 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Bergstrom Auto (169 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Green Bay, WI / 169 miles away from Freeport, IL

    2014 GMC Sierra 1500 SLT Onyx Black 4WD EcoTec3 5.3L V8 Flex Fuel Bergstrom Cadillac Buick GMC of Green Bay wants to buy you vehicle - even if you don...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VECXEG445912
    Stock: I3464A
    Certified Pre-Owned: No
    Listed since: 08-27-2025

    • 132,787 miles
    • 1 accident, 4 owners, personal use only
    • 5'9” bed, 6.2l, 8cyl
    • OG Auto Finance (130 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Gary, IN / 130 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GTU2WEJ3FG443960
    Stock: 11558
    Certified Pre-Owned: No

  • Advertisement

    7 Offers Nearby

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 5 Colors
    • 1 Trim
    • 7 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $19,514
    fair price
    $506 below market
    • 171,614 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Serra Ford Rochester Hills (332 mi away)
    • Five Star Dealer
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Rochester Hills, MI / 332 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2NECXGG323926
    Stock: G323926
    Certified Pre-Owned: No
    Listed since: 09-05-2025

  • $14,990
    fair price
    $536 below market
    • 173,662 miles
    • No accidents, 3 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Kal's Motor Group Marshall (341 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Marshall, MN / 341 miles away from Freeport, IL

    2014 GMC Sierra 1500 SLT Crew Cab 4x4 Engine: 5.3L Gas V8 ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VEC5EG497478
    Stock: T12942
    Certified Pre-Owned: No

  • Price Drop
    $22,977
    fair price
    $94 below market
    • 73,457 miles
    • No accidents, 1 owner, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Ben Davis Ford (244 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Auburn, IN / 244 miles away from Freeport, IL

    Clean CARFAX. 2016 GMC Sierra 1500 SLE SLE EcoTec3 5.3L V8 4WD 6-Speed Automatic Electronic with Overdrive Double CabClean Carfax!, Exterior Parking ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    19 Combined MPG (17 City/22 Highway)

    Listing Information:

    VIN: 1GTV2MEC1GZ178063
    Stock: F3017
    Certified Pre-Owned: No
    Listed since: 09-05-2025

  • New Listing
    $17,999
    good price
    $1,451 below market
    • 152,753 miles
    • 2 accidents, 2 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Your Choice Autos - Waukegan (90 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Waukegan, IL / 90 miles away from Freeport, IL

    2014 GMC Sierra 1500 SLT 4x4 4dr Crew Cab 6.5 ft. SB: Mechanical 5.3L V8 engine 6-speed automatic transmission Four-wheel drive with electronic transf...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VEC6EG331406
    Stock: WYC-331406
    Certified Pre-Owned: No
    Listed since: 09-20-2025

  • Advertisement

    7 Offers Nearby

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 5 Colors
    • 1 Trim
    • 7 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $27,500
    fair price
    $958 below market
    • 90,304 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Zimbrick Buick GMC Eastside (61 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Madison, WI / 61 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2NEC4GG314302
    Stock: UG35851
    Certified Pre-Owned: No
    Listed since: 09-17-2025

  • Price Drop
    $24,000
    good price
    $2,252 below market
    • 134,219 miles
    • 1 accident, 4 owners, corporate fleet vehicle
    • 5'9” bed, 6.2l, 8cyl
    • Corwin Chrysler Dodge Jeep RAM FIAT of Springfield (398 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Springfield, MO / 398 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GTU2PEJ7GG274761
    Stock: 3274761
    Certified Pre-Owned: No
    Listed since: 09-03-2025

  • $13,995
    fair price
    $1,343 below market
    • 135,900 miles
    • 1 accident, 2 owners, corporate fleet vehicle
    • 6'7” bed, 5.3l, 8cyl
    • Cincinnati Used Auto Sales (356 mi away)
    • AWD/4WD
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    • Trip Computer
    Close

    Located in Cincinnati, OH / 356 miles away from Freeport, IL

    This 2014 GMC Sierra 1500 is a sturdy and reliable full-size pickup truck that boasts a powerful EcoTec3 5.3L Flex Fuel V8 engine, capable of deliveri...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GTV2TEC6EZ221996
    Stock: 1648
    Certified Pre-Owned: No

  • Price Drop
    $28,495
    fair price
    $564 below market
    • 88,955 miles
    • No accidents, 4 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Laura Buick GMC (250 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Collinsville, IL / 250 miles away from Freeport, IL

    Recent Trade! Denali 5.3 V8 Crew Cab 4x4. Navigation System, Power Sunroof, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With L...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2PEC6GG236214
    Stock: L253680A
    Certified Pre-Owned: No
    Listed since: 08-20-2025

  • Photos not available
    $17,962
    fair price
    $304 below market
    • 170,184 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 6.2l, 8cyl
    • Heller Ford (113 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in El Paso, IL / 113 miles away from Freeport, IL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: Yes

    Features and Specs:

    Listing Information:

    VIN: 3GTU2WEJXEG376062
    Stock: U24981M
    Certified Pre-Owned: No
    Listed since: 12-10-2024

Showing 85 - 105 out of 9,756 listings

Consumer Reviews for the GMC Sierra 1500

Read recent reviews for the GMC Sierra 1500
Overall Consumer Rating
3.4 out of 5 stars72 Reviews
Write a vehicle reviewSee all 72 reviews
  • 5 star
    (33%)
  • 4 star
    (24%)
  • 3 star
    (11%)
  • 2 star
    (10%)
  • 1 star
    (22%)
5 out of 5 stars

2015 GMC Sierra 1500 Crew Cab SLT

papanav, 11/02/2014
2015 GMC Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
Purchased a 2015 Sierra 1500 SLT (crew cab) and traded in my 2014 Sierra 1500 SLE (double cab). I usually keep a vehicle for 10 years or more however, the only reason I traded was because of the very good incentive on the 2015 and the excellent deal I had gotten on the 2014 and the reasonable trade in price on the 2014. I now have 13,000 miles on the 2015 and feel that it is also an … excellent truck with many more amenities. The safety features to include back-up camera, parking warning, lane changing, navigation and hands free make for a very safe truck. I have not been able to attain quite the mileage I got on my 2014 even though I have a tonneau cover and drive the truck in a similar manner. The best I have been able to attain is 21.6 on a long trip. The advantage of a large vehicle with plenty of interior comfort, good mileage numbers, tons of room for luggage and smooth ride made this vehicle my vehicle of choice over a sedan or suv. I will add on to the information above which has not changed. I took a long trip to Michigan and pretty much backed up what I ha determined in the first review that I sent to you. I did attain 22mpg on one leg of the trip and 21.5 on the second leg of the trip. Truck still very comfortable, spacious and has given me absolutely no problems. I have had the oil, filter and tires rotated on schedule and had one recall corrected on the airbag system. I have owned the truck now for 25 months and still feel that it is a nice looking well made vehicle. I took a recent trip and was able to get 23.0 mpg which is slightly higher than advertised. The sweet spot is right about 70mph when the 5.3L engine is in 4v and on flat terrain. In that configuration it gets excellent mileage. The other sweet spot is driving a steady 55mph when the truck is in 4v. Presently I have 22,500 miles on the odometer and I am very satisfied with the vehicle. This is my third review after owning the truck for two and a half years. I have over 27,000 miles on the truck so far with no problems. I did notice that my transmission temp was running much hotter than the allison transmission that I have in my diesel but in looking into it further I found that 190 degrees is not an unusual temperature for this engine and transmission combination. This is my fourth review of my Sierra 1500 Crew Cab with just over 37,000 miles. So far so good, the truck continues to run very well with no complaints.. I changed the oil and filter myself and was surprised to see that the 5.3 liter engine takes 8.5 quarts of 0w-20 oil. In looking at the new GMC Sierra's as well as Ford and Ram 1500 series trucks I am amazed at how many gadgets they have placed in these vehicles with a corresponding price increase. Almost all of these vehicles are now priced in the mid 60 thousand dollar price range and the manufacturers are offering 10 year financing. Unbelievable!!! I recently replaced all four tires at 46,000 miles. They were original equipment and wore well. They were Goodyear Wrangler 275/55R20's. There was still probably 10.000 miles of wear left but I am not sure they would have been good for winter 9 months from now. My first check engine light came on indicating an evaporations leak code po455. I replaced the gas cap which of course did not fix it so I will find out what the problem is when I get the truck inspected this month. The evap system leak was found and determined to be a crack in a hose that was replaced and check engine light disappeared. I have taken trips using the range plug in unit that keeps my engine running on 8 cylinders all the time and I still was getting 21.5 mpg. Still no problems to speak of and still a handsome truck. At 51,000 miles I had all the fluids changed to include transmission, coolant, differential and transaxles. I now have 63,000 on the truck. I did have to replace the battery about 6 months ago but other than that absolutely no problems.
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FAQ

What is a good price for a used 2015 GMC Sierra 1500?

According to Edmunds.com's True Market Value calculations, the retail price of a used 2015 GMC Sierra 1500's most popular trim, the SLT, in great condition with 96,000 miles on its odometer, is $32,924. Prices vary by trim, region and options included.

What engine options are available for the 2015 GMC Sierra 1500?

The 2015 GMC Sierra 1500 is available with a 5.3 L-liter gas engine or a 4.3 L-liter flex-fuel (FFV) engine, with output up to 355 hp, depending on engine type.
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