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  • New Listing
    • 32,738 miles
    • No accidents, 1 owner, personal use
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from TN to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Bristol, TN / 1,666 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: 3GTU9BED8MG314964
    Stock: 27689748
    Certified Pre-Owned: No

  • New Listing
    Stock photo**
    $44,725
    fair price
    $957 above market
    • 66,929 miles
    • 5'10” bed, 6.2l, 8cyl
    • James Motorsports (1 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Apache Junction, AZ / 1 miles away from Apache Junction, AZ

    ** OUR FAMILY HAS BEEN DOING BUSINESS ON THE SAME CORNER IN APACHE JUNCTION SINCE 1979! **5-star rated Google reviewed business ready to make your nex...

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    18 Combined MPG (16 City/21 Highway)

    Listing Information:

    VIN: 3GTP9EEL8MG118321
    Stock: 118321
    Certified Pre-Owned: No
    Listed since: 07-22-2025

  • Price Drop
    • 32,626 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 6.2l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from MN to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Maplewood, MN / 1,269 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: 1GTP9EELXMZ340195
    Stock: 26611790
    Certified Pre-Owned: No

  • New Listing
    • 32,855 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from VA to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Midlothian, VA / 1,920 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:

    19 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU9FED9MG403711
    Stock: 27031367
    Certified Pre-Owned: No

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 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.
    • 41,614 miles
    • No accidents, 2 owners, personal use
    • 5'10” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    • 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: 3GTP8CED6MG229563
    Stock: 2003776881
    Certified Pre-Owned: No
    Listed since: 06-03-2025

  • $36,788
    great price
    $3,922 below market
    • 14,149 miles
    • No accidents, 1 owner, personal use only
    • 6'7” bed, 2.7l, 4cyl
    • Henry Brown Buick GMC (15 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Gilbert, AZ / 15 miles away from Apache Junction, AZ

    1 Owner, Local Trade, 8-Speed Automatic, 4WD, Vinyl. Recent Arrival! CARFAX One-Owner. Clean CARFAX. 2024 White GMC Sierra 1500 Pro 4WD Henry Brown Au...

    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 (17 City/20 Highway)

    Listing Information:

    VIN: 3GTPUAEK3RG415969
    Stock: 25T554A
    Certified Pre-Owned: No
    Listed since: 05-12-2025

  • New Listing
    • 33,352 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from NC to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Winston Salem, NC / 1,774 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:

    19 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 1GTU9FED4MZ440827
    Stock: 27549384
    Certified Pre-Owned: No

  • New Listing
    • 49,449 miles
    • No accidents, 1 owner, personal use only
    • Lifted Trucks Tucson (80 mi away)
    • Perf Leather-Appoint...
    • Heated Driver & Fron...
    • Power Sunroof
    • Apple CarPlay
    • Remote keyless entry
    Close

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

    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: 1GTU9DEL8MZ288059
    Stock: T27818
    Certified Pre-Owned: No
    Listed since: 07-12-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 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.
  • Price Drop
    • 44,600 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 6.2l, 8cyl
    • Quebedeaux Buick GMC (90 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Tucson, AZ / 90 miles away from Apache Junction, AZ

    Dynamic Blue Metallic 2023 GMC Sierra 1500 AT4X 4WD 10-Speed Automatic EcoTec3 6.2L V8 10-Speed Automatic, 4WD, Obsidian Rush Leather.DAILY INTERNET S...

    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:

    15 Combined MPG (14 City/17 Highway)

    Listing Information:

    VIN: 3GTUUFEL0PG277474
    Stock: Q9995
    Certified Pre-Owned: No
    Listed since: 03-19-2025

  • New Listing
    Stock photo**
    $40,999
    fair price
    $1,191 above market
    • 76,673 miles
    • 5'10” bed, 6.2l, 8cyl
    • Drive Nation (36 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

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

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    18 Combined MPG (16 City/21 Highway)

    Listing Information:

    VIN: 3GTP9EEL2MG470486
    Stock: DN331
    Certified Pre-Owned: No
    Listed since: 06-29-2025

  • $44,790
    fair price
    $227 above market
    • 29,621 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 3l, 6cyl
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Wesley Chapel, FL / 1,767 miles away from Apache Junction, AZ

    CarFax No Accidents Reported,CarFax 1-Owner,Apple CarPlay,Back-Up Camera,Bluetooth,Heated Seats,Heated Steering Wheel,Keyless Start,Remote Start,Satel...

    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: 3GTU9EET7MG250361
    Stock: M250361P
    Certified Pre-Owned: No

  • Photos not available
    • 30,704 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 2.7l, 4cyl
    • Henry Brown Buick GMC (15 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    Close

    Located in Gilbert, AZ / 15 miles away from Apache Junction, AZ

    1 Owner, Local Trade, 8-Speed Automatic, 4WD, Black Cloth. Recent Arrival! CARFAX One-Owner. Clean CARFAX. 2023 Sterling Metallic GMC Sierra 1500 Elev...

    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/20 Highway)

    Listing Information:

    VIN: 1GTPUJEK7PZ196589
    Stock: 25T983B
    Certified Pre-Owned: No
    Listed since: 05-13-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 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.
    • 50,101 miles
    • No accidents, 2 owners, personal use only
    • 5'10” bed, 3l, 6cyl
    • Quebedeaux Buick GMC (90 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tucson, AZ / 90 miles away from Apache Junction, AZ

    Summit White 2023 GMC Sierra 1500 Denali 4WD 10-Speed Automatic 3.0L I6 10-Speed Automatic, 4WD, Atmosphere/Brownstone Leather.DAILY INTERNET SPECIALS...

    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: 3GTUUGE87PG106710
    Stock: 35998A
    Certified Pre-Owned: No
    Listed since: 06-26-2025

  • New Listing
    • 44,364 miles
    • No accidents, 3 owners, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • Liberty GMC (43 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Peoria, AZ / 43 miles away from Apache Junction, AZ

    Dark Sky Metallic 2021 GMC Sierra 1500 SLT 4WD 8-Speed Automatic EcoTec3 5.3L V8 8-Speed Automatic, 4WD, Jet Black Leather.Recent Arrival! Odometer is...

    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: 1GTU9DED5MZ441778
    Stock: G51476A
    Certified Pre-Owned: No
    Listed since: 07-18-2025

  • New Listing
    • 36,019 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 3l, 6cyl
    • CarMax (In-stock online)
    • Transfer available from DE to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Newark, DE / 2,021 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: 3GTU9CET4MG426271
    Stock: 27302163
    Certified Pre-Owned: No

    • 37,053 miles
    • No accidents, 2 owners, personal use
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from GA to AZ*
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Lithia Springs, GA / 1,546 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: 1GTP8CED7MZ400398
    Stock: 27497002
    Certified Pre-Owned: No

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 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.
  • Price Drop
    • 37,100 miles
    • No accidents, 3 owners, corporate fleet vehicle
    • 5'10” bed, 3l, 6cyl
    • CarMax (In-stock online)
    • Transfer available from SC to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Columbia, SC / 1,741 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: 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: 3GTU9EET8MG431145
    Stock: 27509271
    Certified Pre-Owned: No

  • Price Drop
    • 38,663 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from FL to AZ*
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Boynton Beach, FL / 1,935 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:

    19 Combined MPG (17 City/23 Highway)

    Listing Information:

    VIN: 1GTP8FED4MZ297491
    Stock: 27292516
    Certified Pre-Owned: No

    • 38,846 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • CarMax (In-stock online)
    • Transfer available from MD to AZ*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Ellicott City, MD / 1,962 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:

    18 Combined MPG (16 City/21 Highway)

    Listing Information:

    VIN: 1GTP9EED7MZ442045
    Stock: 26607654
    Certified Pre-Owned: No

  • Price Drop
    • 40,365 miles
    • No accidents, 1 owner, personal use only
    • 5'10” bed, 5.3l, 8cyl
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Birmingham, AL / 1,423 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: 3GTP8FED8MG474804
    Stock: 2003855969
    Certified Pre-Owned: No
    Listed since: 06-26-2025

  • Price Drop
    • 42,148 miles
    • No accidents, 1 owner, 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 Portland, OR / 1,022 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: 1GTP8FED2MZ215323
    Stock: 2003745637
    Certified Pre-Owned: No
    Listed since: 05-26-2025

Showing 799 - 819 out of 1,572 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 2021 GMC Sierra 1500 in Apache Junction, AZ Values

Estimated values
2021 GMC Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 8A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$29,965$32,906$35,865
Clean$29,416$32,271$35,138
Average$28,502$31,213$33,926
Rough$27,314$29,838$32,350

The average list price of a used 2021 GMC Sierra 1500 in Apache Junction, Arizona is $45,431. The average mileage on a used GMC Sierra 1500 2021 for sale in Apache Junction, Arizona is 40,475. Based on the average mileage of 40,475 for used 2021 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 2021 in Apache Junction, Arizona to be $28,502.

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