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1,551 listings
  • New Listing
    • 33,855 miles
    • No accidents, 1 owner, personal use only
    • 6'7” bed, 3l, 6cyl
    • CarMax (In-stock online)
    • Transfer available from GA to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Roswell, GA / 1,560 miles away from Apache Junction, AZ

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    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: 3GTU9FET6LG400433
    Stock: 26454640
    Certified Pre-Owned: No

  • Price Drop
    • 98,567 miles
    • Frame damage reported, 3 owners, corporate fleet vehicle
    • 6'7” bed, 5.3l, 8cyl
    • Lalo's Auto Sales (29 mi away)
    • AWD/4WD
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    Close

    Located in Phoenix, AZ / 29 miles away from Apache Junction, AZ

    Free CARFAX Vehicle History Reports !Advertised Price is Pre-Discounted Cash Sale Price !!Financing Available At Regular Sales Price !!Please Visit Ou...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    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: 1GTPKVE01AZ290552
    Stock: 5600
    Certified Pre-Owned: No
    Listed since: 06-06-2025

  • Price Drop
    $62,153
    great price
    $5,472 below market
    • 11,289 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 6.2l, 8cyl
    • AutoNation Chrysler Dodge Jeep Ram North Phoenix (36 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Phoenix, AZ / 36 miles away from Apache Junction, AZ

    At4 Premium PackageTechnology PackageEngine; 6.2L Ecotec3 V8Lpo; Off-Road High Clearance StepsSunroof; PowerLpo; Multipro Audio System By Kicker...

    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: 1GTUUEEL2PZ273405
    Stock: PZ273405
    Certified Pre-Owned: No
    Listed since: 03-24-2025

  • $25,975
    great price
    $5,871 below market
    • 117,739 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 2.7l, 4cyl
    • Another Time Used Cars (32 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Phoenix, AZ / 32 miles away from Apache Junction, AZ

    ***special***special***special***here we have for sure the best deal ever on a clean carfax 1 owner-az super clean and the absolute nicest best runnin...

    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 (18 City/21 Highway)

    Listing Information:

    VIN: 3GTP9CEK1MG192109
    Stock: 192109
    Certified Pre-Owned: No
    Listed since: 07-11-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    • 1 Trim
    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
    • 63,944 miles
    • No accidents, 2 owners, personal use
    • 5'10” bed, 5.3l, 8cyl
    • Lifted Trucks Tucson (80 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Tucson, AZ / 80 miles away from Apache Junction, AZ

    Our 2020 GMC Sierra 1500 SLT Crew Cab 4X4 supplies excellence on wheels with a bold Dark Sky Metallic exterior! Powered by a 5.3 Liter EcoTec3 V8 that...

    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/22 Highway)

    Listing Information:

    VIN: 3GTU9DED4LG408575
    Stock: T29014A
    Certified Pre-Owned: No
    Listed since: 06-27-2025

  • Price Drop
    $59,488
    great price
    $6,085 below market
    • 13,090 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 6.2l, 8cyl
    • Yates Buick GMC (47 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Goodyear, AZ / 47 miles away from Apache Junction, AZ

    2023 GMC Sierra 1500 Denali 10-Speed Automatic, 4WD, Atmosphere/Brownstone Leather. Denali Odometer is 5584 miles below market average!

    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: 1GTUUGEL1PZ190480
    Stock: P25762A
    Certified Pre-Owned: No
    Listed since: 05-06-2025

    • 41,796 miles
    • No accidents, 1 owner, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in San Antonio, TX / 817 miles away from Apache Junction, AZ

    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: 1GTR8AEF1LZ366388
    Stock: 2003734794
    Certified Pre-Owned: No
    Listed since: 05-16-2025

  • New Listing
    • 39,895 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from MO to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Saint Peters, MO / 1,223 miles away from Apache Junction, AZ

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    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: 1GTR9CED9LZ251688
    Stock: 25833337
    Certified Pre-Owned: No

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    • 1 Trim
    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
    • 78,772 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 2.7l, 4cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    • Power Driver Seat
    Close

    Located in Dallas, TX / 855 miles away from Apache Junction, AZ

    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:

    20 Combined MPG (20 City/23 Highway)

    Listing Information:

    VIN: 1GTR8CEK4LZ156232
    Stock: 2003864091
    Certified Pre-Owned: No
    Listed since: 07-06-2025

  • New Listing
    • 43,623 miles
    • No accidents, 1 owner, personal use
    • 5'10” bed, 4.3l, 6cyl
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Blind Spot Monitorin...
    Close

    Located in Dallas, TX / 855 miles away from Apache Junction, AZ

    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:

    17 Combined MPG (15 City/20 Highway)

    Listing Information:

    VIN: 3GTP9AEHXLG107033
    Stock: 2003890751
    Certified Pre-Owned: No
    Listed since: 07-19-2025

  • Price Drop
    • 90,768 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 6'7” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Indianapolis, IN / 1,469 miles away from Apache Junction, AZ

    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: 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: 1GTR9CED3LZ285674
    Stock: 2003791062
    Certified Pre-Owned: No
    Listed since: 06-17-2025

    • 47,241 miles
    • No accidents, 2 owners, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in San Antonio, TX / 817 miles away from Apache Junction, AZ

    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 (17 City/23 Highway)

    Listing Information:

    VIN: 1GTP8FED6LZ218790
    Stock: 2003800872
    Certified Pre-Owned: No
    Listed since: 06-11-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    • 1 Trim
    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.
    • 109,898 miles
    • No accidents, 1 owner, personal use
    • 5'10” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in San Antonio, TX / 817 miles away from Apache Junction, AZ

    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: 3GTP8CED7LG215248
    Stock: 2003670800
    Certified Pre-Owned: No
    Listed since: 05-14-2025

    • 96,194 miles
    • No accidents, 3 owners, corporate fleet vehicle
    • 5'10” bed, 3l, 6cyl
    • Nation AutoHub (32 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Power Driver Seat
    Close

    Located in Phoenix, AZ / 32 miles away from Apache Junction, AZ

    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: 3GTU9CET2LG281567
    Stock: 281567
    Certified Pre-Owned: No
    Listed since: 06-08-2025

  • Price Drop
    • 77,114 miles
    • No accidents, 2 owners, rental vehicle
    • 5'10” bed, 5.3l, 8cyl
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Casper, WY / 708 miles away from Apache Junction, AZ

    CarFax No Accidents Reported,Rare Find,Apple CarPlay,Back-Up Camera,Bluetooth,Chrome Wheels,Turbo/Supercharged,WiFi Hotspot,10-Speed A/T,4 Cylinder En...

    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: 1GTU9BED3LZ203530
    Stock: 8644CF
    Certified Pre-Owned: No

    • 89,954 miles
    • No accidents, 1 owner, personal use
    • Carvana (In-stock online)
    • Home delivery*
    • Towing Pkg
    Close

    Located in Houston, TX / 972 miles away from Apache Junction, AZ

    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: 1GTP8DEDXLZ356532
    Stock: 2003696541
    Certified Pre-Owned: No
    Listed since: 04-30-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    • 1 Trim
    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
    $34,590
    fair price
    $144 below market
    • 58,976 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 2.7l, 4cyl
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Power Driver Seat
    Close

    Located in Cleveland, OH / 1,719 miles away from Apache Junction, AZ

    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:

    20 Combined MPG (19 City/22 Highway)

    Listing Information:

    VIN: 3GTP9CEK3LG378099
    Stock: 2003843990
    Certified Pre-Owned: No
    Listed since: 07-01-2025

    • 61,342 miles
    • No accidents, 3 owners, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Dallas, TX / 855 miles away from Apache Junction, AZ

    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: 3GTP8CED5LG377055
    Stock: 2003445597
    Certified Pre-Owned: No
    Listed since: 01-27-2025

  • $39,998
    fair price
    $1,105 above market
    • 48,074 miles
    • No accidents, 2 owners, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from NJ to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Power Driver Seat
    Close

    Located in Mays Landing, NJ / 2,079 miles away from Apache Junction, AZ

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    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: 1GTU9CED5LZ131333
    Stock: 26684356
    Certified Pre-Owned: No

    • 49,736 miles
    • No accidents, 3 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from NV to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Reno, NV / 616 miles away from Apache Junction, AZ

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    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: 1GTR9CED0LZ207580
    Stock: 27261581
    Certified Pre-Owned: No

  • New Listing
    • 69,397 miles
    • No accidents, 2 owners, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Columbus, OH / 1,637 miles away from Apache Junction, AZ

    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: 1GTR9CED1LZ193737
    Stock: 2003895876
    Certified Pre-Owned: No
    Listed since: 07-17-2025

Showing 589 - 609 out of 1,551 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 2020 GMC Sierra 1500 in Apache Junction, AZ Values

Estimated values
2020 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$36,386$37,671$38,911
Clean$35,615$36,850$38,041
Average$34,330$35,483$36,591
Rough$32,660$33,706$34,706

The average list price of a used 2020 GMC Sierra 1500 in Apache Junction, Arizona is $37,567. The average mileage on a used GMC Sierra 1500 2020 for sale in Apache Junction, Arizona is 63,870. Based on the average mileage of 63,870 for used 2020 GMC Sierra 1500 for sale in Apache Junction, AZ 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 2020 in Apache Junction, Arizona to be $34,330.

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