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  • New Listing
    • 136,885 miles
    • No accidents, 2 owners, personal use only
    • Real Steal Auto Sales (150 mi away)
    • 4WD
    • Heated Seats
    • Reverse Camera
    • Multi-Function Remot...
    • Sirius XM Bluetooth ...
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    Located in Gastonia, NC / 150 miles away from Knoxville, TN

    Total Price is Listed at $26,995 for financing purposes! Excludes Tags, Taxes, and Title Fees! *$2500-5500+ Down Payment!* $150-175+ a week guaranteed...

    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: 3GTU2VEC0FG193654
    Stock: 193654
    Certified Pre-Owned: No
    Listed since: 06-19-2025

  • New Listing
    $30,990
    fair price
    $1,817 above market
    • 83,207 miles
    • No accidents, 2 owners, personal use
    • 6'7” bed, 6.2l, 8cyl
    • Carvana - Charlotte (172 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Charlotte, NC / 172 miles away from Knoxville, TN

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    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: 3GTU2VEJ5FG487789
    Stock: 2003675656
    Certified Pre-Owned: No
    Listed since: 05-10-2025

  • Stock photo**
    $18,876
    fair price
    $594 below market
    • 113,216 miles
    • 2 accidents, 2 owners, corporate fleet vehicle
    • 6'7” bed, 5.3l, 8cyl
    • Mazda of Columbia (201 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Columbia, SC / 201 miles away from Knoxville, TN

    South Carolinas best kept secret Mazda of Columbia presents you this newest addition to the pre-owned portfolio. This 2015 Iridium Metallic GMC Sierra...

    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: 1GTV2UEC0FZ228997
    Stock: PM5458B
    Certified Pre-Owned: No
    Listed since: 07-26-2025

  • $22,200
    good price
    $2,870 below market
    • 105,378 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Dubs Automotive Sales (250 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Henderson, KY / 250 miles away from Knoxville, TN

    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: 3GTU2UEC3FG176048
    Stock: NV-185
    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.
  • New Listing
    $21,991
    fair price
    $569 below market
    • 134,018 miles
    • 1 accident, 3 owners, personal use
    • 5'9” bed, 5.3l, 8cyl
    • Haley Buick GMC (359 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Richmond, VA / 359 miles away from Knoxville, TN

    THIS VEHICLE IS LOCATED AT 9831 MIDLOTHIAN TURNPIKE RICHMOND VA 23235. CALL US TODAY TO 804-320-9054 TO SCHEDULE YOUR NO HASSLE NO HAGGLE TEST DRIVE.*...

    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: 3GTU2WECXFG320707
    Stock: T307023A
    Certified Pre-Owned: No
    Listed since: 07-30-2025

  • $17,968
    fair price
    $883 above market
    • 134,773 miles
    • 2 accidents, 1 owner, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Toth Buick GMC (369 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Akron, OH / 369 miles away from Knoxville, TN

    Vehicle Details2015 GMC Sierra 1500 SLE 4x4 *** 1GTV2UEC1FZ299920 *** Quicksilver Metallic Paint with Jet Black Cloth Interior *** 5.3L V8 Engine pair...

    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: 1GTV2UEC1FZ299920
    Stock: R0541A
    Certified Pre-Owned: No
    Listed since: 07-02-2025

  • New Listing
    $22,154
    fair price
    $180 below market
    • 153,634 miles
    • 5'9” bed, 5.3l, 8cyl
    • Subaru of Orange Park (411 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Jacksonville, FL / 411 miles away from Knoxville, TN

    Used 2015 GMC Sierra 1500 SLT For sale Near Me Jacksonville Florida. Stone Blue Metallic 4WD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L ...

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VEC2FG298177
    Stock: FG298177T
    Certified Pre-Owned: No
    Listed since: 07-31-2025

  • $17,995
    fair price
    $993 above market
    • 94,493 miles
    • 1 accident, 1 owner, personal use
    • 6'7” bed, 5.3l, 8cyl
    • North Oakland Motors (464 mi away)
    • AWD/4WD
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    • Trip Computer
    Close

    Located in Waterford, MI / 464 miles away from Knoxville, TN

    Call/Text North Oakland Motors 248-574-5500 Fast Easy Credit Approval For Everyone! Price includes nationwide ASC warranty, and 1 year buyback protect...

    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: 1GTV2TEC4FZ213512
    Stock: 213512
    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.
  • New Listing
    $19,999
    good price
    $1,785 below market
    • 94,477 miles
    • No accidents, 3 owners, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Neil Huffman Chevrolet Buick GMC of Frankfort (166 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Frankfort, KY / 166 miles away from Knoxville, TN

    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: 1GTV2UEC5FZ436700
    Stock: USP0049A
    Certified Pre-Owned: No

  • New Listing
    $14,499
    great price
    $3,555 below market
    • 112,661 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 8'2” bed, 5.3l, 8cyl
    • Automotive Connection (239 mi away)
    • AWD/4WD
    • Back-up camera
    • Upgraded Headlights
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in Fairfield, OH / 239 miles away from Knoxville, TN

    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: 1GTN2LEC5GZ139373
    Stock: 139373
    Certified Pre-Owned: No
    Listed since: 06-22-2025

  • New Listing
    $21,679
    fair price
    $945 above market
    • 99,640 miles
    • 3 accidents, 1 owner, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Mercedes-Benz of Westmont (465 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Westmont, IL / 465 miles away from Knoxville, TN

    Lpo; Body Color Wheel Arch MoldingsWheels; 20" X 9" (50.8 Cm X 22.9 Cm) Ultra Bright Machined AluminumLeather SeatsAudio System; 8" Diagonal Color ...

    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: 1GTV2VEC7FZ366882
    Stock: FZ366882
    Certified Pre-Owned: No
    Listed since: 07-28-2025

    • 137,803 miles
    • No accidents, 2 owners, personal use
    • Ben Davis Ford (382 mi away)
    • Rear Vision Camera w...
    • Remote keyless entry
    • Trailering Equipment
    • Leather Wrapped Stee...
    • Heated door mirrors
    Close

    Located in Auburn, IN / 382 miles away from Knoxville, TN

    Clean Carfax!, EZ Lift & Lower Tailgate, Radio: AM/FM Stereo w/8" Diagonal Color Touch Screen, Rear Vision Camera w/Dynamic Guide Lines, Remote keyles...

    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: 3GTU2UEC3FG202602
    Stock: F2970M
    Certified Pre-Owned: No
    Listed since: 06-07-2025

  • 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.
  • Price Drop
    • 85,669 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 4.3l, 6cyl
    • DriveTime Woodbridge (402 mi away)
    • Tire Pressure Warnin...
    • USB Inputs
    • Trip Computer
    • Rear Bench Seats
    • Stability Control
    Close

    Located in Woodbridge, VA / 402 miles away from Knoxville, TN

    Shop at DriveTime: Get started on your personalized car-buying journey today. With no credit impact, you can get approved for your real, personalized ...

    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:

    20 Combined MPG (18 City/24 Highway)

    Listing Information:

    VIN: 1GTR1TEH5FZ338146
    Stock: 1630092817
    Certified Pre-Owned: No
    Listed since: 06-03-2025

  • New Listing
    • 109,080 miles
    • No accidents, 4 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Carvana - Atlanta (154 mi away)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Atlanta, GA / 154 miles away from Knoxville, TN

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1VEC6FG533910
    Stock: 2003737118
    Certified Pre-Owned: No
    Listed since: 05-28-2025

  • New Listing
    • 119,803 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Real Steal Auto Sales (150 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Gastonia, NC / 150 miles away from Knoxville, TN

    Total Price is Listed at $28,495 for financing purposes! Excludes Tags, Taxes, and Title Fees! *$2500-5500+ Down Payment!* $150-175+ a week guaranteed...

    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: 3GTU2VEC3FG293263
    Stock: 293263
    Certified Pre-Owned: No
    Listed since: 05-07-2025

  • Photos not available
    $19,000
    fair price
    $2,104 above market
    • 107,595 miles
    • 1 accident, 1 owner, personal use only
    • 8'2” bed, 5.3l, 8cyl
    • Newcombs Auto Sales (467 mi away)
    • AWD/4WD
    • Back-up camera
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    Close

    Located in Auburn Hills, MI / 467 miles away from Knoxville, TN

    priced balance to finance with 25% down- including tax title and plate.No matter your credit situation, we can work with you! We offer buy here pay he...

    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: 1GTN2TEC3FZ386308
    Stock: 12306
    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.
    • 29,708 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Carvana - Indianapolis (296 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Indianapolis, IN / 296 miles away from Knoxville, TN

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    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: 3GTU2VEC5FG340048
    Stock: 2003696784
    Certified Pre-Owned: No
    Listed since: 07-12-2025

    • 97,752 miles
    • No accidents, 1 owner, personal use
    • 6'7” bed, 4.3l, 6cyl
    • Performance Chrysler Jeep Dodge Ram of Columbus (278 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Columbus, OH / 278 miles away from Knoxville, TN

    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: 3GTU2UEH0FG382942
    Stock: FG382942
    Certified Pre-Owned: No
    Listed since: 07-25-2025

  • $15,995
    good price
    $2,120 below market
    • 172,375 miles
    • 1 accident, 2 owners, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Coventry Auto Sales (384 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in New Springfield, OH / 384 miles away from Knoxville, TN

    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: 3GTU2VEC2FG229392
    Stock: 229392
    Certified Pre-Owned: No

  • New Listing
    • 55,508 miles
    • No accidents, 2 owners, personal use
    • 5'9” bed, 5.3l, 8cyl
    • Carvana - Charlotte (172 mi away)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Charlotte, NC / 172 miles away from Knoxville, TN

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    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 (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1VEC2FG423615
    Stock: 2003767947
    Certified Pre-Owned: No
    Listed since: 05-30-2025

    • 71,096 miles
    • No accidents, 1 owner, government vehicle
    • 8'2” bed, 5.3l, 8cyl
    • Ray Skillman Auto Center Buick GMC (287 mi away)
    • AWD/4WD
    • Back-up camera
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    Close

    Located in Indianapolis, IN / 287 miles away from Knoxville, TN

    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: Yes

    Features and Specs:

    Listing Information:

    VIN: 1GTN2TECXFZ237586
    Stock: IG7158
    Certified Pre-Owned: No
    Listed since: 07-07-2025

Showing 43 - 63 out of 12,909 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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Used 2015 GMC Sierra 1500 in Knoxville, TN Values

Estimated values
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (6.2L 8cyl 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$17,981$22,118$24,847
Clean$17,285$21,214$23,779
Average$16,125$19,708$21,998
Rough$14,617$17,749$19,683

The average list price of a used 2015 GMC Sierra 1500 in Knoxville, Tennessee is $22,417. The average mileage on a used GMC Sierra 1500 2015 for sale in Knoxville, Tennessee is 107,084. Based on the average mileage of 107,084 for used 2015 GMC Sierra 1500 for sale in Knoxville, TN and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Sierra 1500 2015 in Knoxville, Tennessee to be $16,125.

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