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  • Price Drop
    $47,500
    fair price
    $1,104 below market
    • 71,037 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 15 City / 19 Hwy MPG
    • Autonomous Auto Group (103 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Marietta, GA / 103 miles away from Columbus, GA

    We have multiple satellite locations where inventory is stored... please call us to set an appointment so we can ensure you have the correct location ...

    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:

    16 Combined MPG (15 City/19 Highway)

    Listing Information:

    VIN: 1GKS2GKD2PR160130
    Stock: PR160130A
    Certified Pre-Owned: No
    Listed since: 09-26-2024

  • $47,769
    good price
    $2,320 below market
    • 74,961 miles
    • No accidents, 1 owner, rental vehicle
    • 8 Seats, 15 City / 19 Hwy MPG
    • Countryside Chevrolet (445 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Doniphan, MO / 445 miles away from Columbus, GA

    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:

    16 Combined MPG (15 City/19 Highway)

    Listing Information:

    VIN: 1GKS2GKD1PR158014
    Stock: 8014P
    Certified Pre-Owned: No
    Listed since: 03-19-2025

  • Price Drop
    $48,910
    fair price
    $1,450 below market
    • 78,303 miles
    • No accidents, 1 owner, personal use only
    • 8 Seats, 15 City / 19 Hwy MPG
    • Wyatt Johnson Buick GMC (316 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Clarksville, TN / 316 miles away from Columbus, GA

    Heated Leather Seats, 3rd Row Seat, Rear Air, Power Liftgate, 4x4, Alloy Wheels, Captains Chairs, TRANSMISSION, 10-SPEED AUTOMATIC, ENGINE, 5.3L ECOTE...

    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:

    16 Combined MPG (15 City/19 Highway)

    Listing Information:

    VIN: 1GKS2GKD7PR160656
    Stock: HPR160656G
    Certified Pre-Owned: No
    Listed since: 04-15-2025

  • $56,399
    good price
    $2,915 below market
    • 48,546 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Troy, MI / 702 miles away from Columbus, GA

    Rare Find,3rd Row Seat,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Brake Assist,Heated Seats,Heated Steering Wheel,Keyless Start,Lane Ke...

    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: 1GKS2HKL7NR170436
    Stock: NR170436TJ
    Certified Pre-Owned: No

  • New Listing
    $16,999
    fair price
    $1,380 below market
    • 129,989 miles
    • 1 accident, 2 owners, personal use only
    • 8 Seats, 16 City / 23 Hwy MPG
    • Sanford Honda (385 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Sanford, NC / 385 miles away from Columbus, GA

    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: Yes

    Features and Specs:

    18 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 1GKS1GKC8GR420105
    Stock: P2033A
    Certified Pre-Owned: No
    Listed since: 04-08-2025

  • Price Drop
    $52,699
    fair price
    $926 below market
    • 70,565 miles
    • No accidents, 1 owner, personal use
    • 8 Seats, 15 City / 19 Hwy MPG
    • Hennessy Buick GMC (79 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Morrow, GA / 79 miles away from Columbus, GA

    Hennessy of Southlake is Proud to offer you this Exceptional 2023 GMC Yukon XL, Appointed with the SLT Trim and is finished in Sterling Metallic over ...

    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:

    16 Combined MPG (15 City/19 Highway)

    Listing Information:

    VIN: 1GKS2GKD5PR304432
    Stock: S2137P
    Certified Pre-Owned: No
    Listed since: 06-05-2025

  • $72,826
    fair price
    $558 above market
    • 13,976 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 18 Hwy MPG
    • Rick Hendrick City Chevrolet (299 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Charlotte, NC / 299 miles away from Columbus, GA

    GMC Certified, CARFAX 1-Owner, Excellent Condition, ONLY 13,976 Miles! JUST REPRICED FROM $74,626, $2,100 below J.D. Power Retail! Third Row Seat, Hea...

    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:

    16 Combined MPG (14 City/18 Highway)

    Listing Information:

    VIN: 1GKS2JKL0PR172782
    Stock: P20299
    Certified Pre-Owned: No
    Listed since: 03-14-2025

  • $23,995
    fair price
    $731 below market
    • 121,545 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 20 Hwy MPG
    • Discount Auto Inc (476 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Greenville, NC / 476 miles away from Columbus, GA

    Discount Auto Inc takes pride in every vehicle that leaves our dealership here in Greenville, NC . We strive to be the best we can be at every opportu...

    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:

    16 Combined MPG (14 City/20 Highway)

    Listing Information:

    VIN: 1GKS2HKJ4GR362060
    Stock: 12013
    Certified Pre-Owned: No
    Listed since: 06-29-2025

  • $66,445
    good price
    $2,171 below market
    • 72,729 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 18 Hwy MPG
    • Land Rover Raleigh (428 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Raleigh, NC / 428 miles away from Columbus, GA

    CARFAX One-Owner. White Frost Tricoat 2023 GMC Yukon XL Denali Ultimate 4WD 10-Speed Automatic with Overdrive EcoTec3 6.2L V8 4WD, 15" Diagonal Multi-...

    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:

    16 Combined MPG (14 City/18 Highway)

    Listing Information:

    VIN: 1GKS2KKLXPR270997
    Stock: N508592A
    Certified Pre-Owned: No
    Listed since: 05-14-2025

  • New Listing
    • 54,151 miles
    • No accidents, 1 owner, rental vehicle
    • 8 Seats, 15 City / 20 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in San Antonio, TX / 827 miles away from Columbus, GA

    Transfer of vehicle from another location to your neighborhood Enterprise Car Sales may require payment of a non-refundable transfer fee to begin the ...

    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:

    17 Combined MPG (15 City/20 Highway)

    Listing Information:

    VIN: 1GKS1GKD5PR296450
    Stock: 7W00QG
    Certified Pre-Owned: No
    Listed since: 06-23-2025

  • $25,990
    fair price
    $777 below market
    • 105,544 miles
    • No accidents, 3 owners, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • Whipple Auto Sales (414 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Raleigh, NC / 414 miles away from Columbus, GA

    JUST ARRIVED, CLEAN CARFAX, 2017 GMC YUKON XL DENALI 6.2 8A 4WD! VERY CLEAN INSIDE AND OUT! LISTED PRICE IS CASH/FINANCE PRICE! (DOES NOT INCLUDE DOC,...

    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:

    16 Combined MPG (14 City/20 Highway)

    Listing Information:

    VIN: 1GKS2HKJ2HR254683
    Stock: D254683
    Certified Pre-Owned: No
    Listed since: 06-19-2025

  • Price Drop
    $30,542
    fair price
    $380 below market
    • 97,825 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 23 Hwy MPG
    • Shottenkirk Honda Rome (126 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Rome, GA / 126 miles away from Columbus, GA

    Recent Arrival! CARFAX One-Owner. Clean CARFAX. 2018 GMC Yukon XL Denali Summit White 14/23 City/Highway MPG EcoTec3 6.2L V8 RWD 10-Speed Automatic wi...

    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 (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ1JR358896
    Stock: YP0391
    Certified Pre-Owned: No
    Listed since: 06-14-2025

  • $70,446
    fair price
    $1,130 below market
    • 62,204 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 18 Hwy MPG
    • Grand Motorcars Kennesaw (107 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Kennesaw, GA / 107 miles away from Columbus, GA

    Vehicle Overview **APPLE CARPLAY**, **PANORAMIC MOONROOF**, **DVD ENTERTAIMENT SYSTEM**, **PREMIUM SOUND SYSTEM**, **3RD BOW SEATS**, **4 X 4**, **ADA...

    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:

    16 Combined MPG (14 City/18 Highway)

    Listing Information:

    VIN: 1GKS2KKL7PR184840
    Stock: PR184840
    Certified Pre-Owned: No
    Listed since: 03-15-2025

  • $72,646
    fair price
    $1,205 below market
    • 36,049 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 18 Hwy MPG
    • Heritage Automotive Center (240 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Lawrenceburg, TN / 240 miles away from Columbus, GA

    Vehicle DetailsIntroducing the 2024 GMC Yukon XL 1500 Denali, a sophisticated blend of power and luxury. This pre-owned vehicle, with 30,505 miles, 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:

    16 Combined MPG (14 City/18 Highway)

    Listing Information:

    VIN: 1GKS2JKL4RR133034
    Stock: A1461A
    Certified Pre-Owned: Yes
    Listed since: 06-21-2025

  • $14,990
    fair price
    $1,180 below market
    • 182,258 miles
    • 1 accident, 3 owners, personal use
    • 7 Seats, 15 City / 21 Hwy MPG
    • Joel's Auto Sales (457 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Alexandria, LA / 457 miles away from Columbus, GA

    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:

    17 Combined MPG (15 City/21 Highway)

    Listing Information:

    VIN: 1GKS1JKJ8FR224840
    Stock: 224840CT
    Certified Pre-Owned: No
    Listed since: 05-06-2025

  • $37,900
    good price
    $3,033 below market
    • 92,036 miles
    • 1 accident, 2 owners, personal use only
    • 8 Seats, 16 City / 20 Hwy MPG
    • Courtesy Buick GMC (455 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Lafayette, LA / 455 miles away from Columbus, GA

    EquipmentThis GMC Yukon XL's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. The state of the art park assist sys...

    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/20 Highway)

    Listing Information:

    VIN: 1GKS1GKD5MR359901
    Stock: 2250280A
    Certified Pre-Owned: No
    Listed since: 07-01-2025

  • Price Drop
    $43,160
    fair price
    $920 below market
    • 128,895 miles
    • No accidents, personal use only
    • 7 Seats, 14 City / 19 Hwy MPG
    • Rock Hill Buick GMC (279 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Rock Hill, SC / 279 miles away from Columbus, GA

    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:

    16 Combined MPG (14 City/19 Highway)

    Listing Information:

    VIN: 1GKS2JKL1MR146137
    Stock: 239576A
    Certified Pre-Owned: No
    Listed since: 05-30-2025

  • New Listing
    $78,843
    fair price
    $1,515 above market
    • 11,243 miles
    • No accidents, 1 owner, rental vehicle
    • 7 Seats, 14 City / 18 Hwy MPG
    • John Hiester Chevrolet (411 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Fuquay Varina, NC / 411 miles away from Columbus, GA

    Onyx Black 2024 GMC Yukon XL Denali 4WD 10-Speed Automatic with Overdrive EcoTec3 6.2L V8*GM CERTIFIED*, ONE OWNER ACCIDENT FREE CARFAX, LIFETIME ENGI...

    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:

    16 Combined MPG (14 City/18 Highway)

    Listing Information:

    VIN: 1GKS2JKL5RR127162
    Stock: 12346U
    Certified Pre-Owned: No
    Listed since: 07-06-2025

  • New Listing
    $59,688
    fair price
    $489 below market
    • 29,177 miles
    • No accidents, 1 owner, personal use only
    • 8 Seats, 15 City / 19 Hwy MPG
    • Beach Buick GMC (353 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Myrtle Beach, SC / 353 miles away from Columbus, GA

    Check out all these great option's License Plate Front Mounting Package, Preferred Equipment Group 4SA (2 Presets For Power Driver Seat, Bose 9-Speake...

    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:

    16 Combined MPG (15 City/19 Highway)

    Listing Information:

    VIN: 1GKS2GKD2PR527835
    Stock: G11644B
    Certified Pre-Owned: No
    Listed since: 07-06-2025

  • Price Drop
    $55,450
    fair price
    $384 below market
    • 56,777 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 19 Hwy MPG
    • Franklin's Spring Creek Ford (91 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Colquitt, GA / 91 miles away from Columbus, GA

    2022 GMC Yukon XL Denali Summit White New Price! 4WD, 15" Diagonal Multi-Color Head-Up Display, 2 Presets For Outside Rearview Mirrors, 3 Years of GMC...

    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:

    16 Combined MPG (14 City/19 Highway)

    Listing Information:

    VIN: 1GKS2JKL8NR119261
    Stock: 10485B
    Certified Pre-Owned: No
    Listed since: 05-06-2025

  • $59,995
    fair price
    $2,036 below market
    • 62,248 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 19 Hwy MPG
    • Jimmy Granger's Natchitoches Ford (486 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Natchitoches, LA / 486 miles away from Columbus, GA

    Vehicle DetailsExplore the epitome of luxury and performance with this pre-owned 2021 GMC Yukon XL 1500 Denali. Designed for those who demand excellen...

    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:

    16 Combined MPG (14 City/19 Highway)

    Listing Information:

    VIN: 1GKS2JKL4MR199091
    Stock: UT99091P
    Certified Pre-Owned: No
    Listed since: 01-19-2025

Showing 925 - 945 out of 1,817 listings

Consumer Reviews for the GMC Yukon XL

Read recent reviews for the GMC Yukon XL
Overall Consumer Rating
4.5 out of 5 stars61 Reviews
Write a vehicle reviewSee all 61 reviews
  • 5 star
    (69%)
  • 4 star
    (23%)
  • 3 star
    (8%)
  • 2 star
    (0%)
  • 1 star
    (0%)
5 out of 5 stars

Vortec 6.0 is AMAZING! LOVE This Denali XL.

Barry Gartner, 11/29/2015
2005 GMC Yukon XL 1500 SLE Rwd 4dr SUV (5.3L 8cyl 4A)
The Denali XL is everything you need to get your family up to the Cabin, tow your toys, and more. This vehicle is hands down the best vehicle I have ever owned. It is smooth, powerful, comfortable, and has AWD for towing my Ice-House, Boat, Snowmobiles, and ATV's. The Denali has the Vortec 6.0 but this is essentially the same engine as the 5.3. My Vortec 6.0 has 232,948 miles and does … not burn oil between changes. I have had to perform repairs on this vehicle which I will list but most of them were only after 200,000 and well worth the investment. These vehicles will easily go 400,000 with routine maintenance. Maintenance & Tips: **TIP 1** Buy a blue tooth OBD2 adapter online for $20 and then get the Torque App for your iPhone/Android to monitor/trouble-shoot data and reset error codes. **TIP 2** Change the fluids on this truck regularly. It will pay off in the long run. These trucks will last FOREVER. You can do both the front differential, rear differential, and transfer case very easily/cheap. The same goes for the transmission but that takes about 17 quarts and isn't exactly cheap to do a total flush but it is much cheaper than a whole new transmission. **TIP 3** Search Online for videos for trouble-shooting and repair. I guarantee you will find out how to do many of these repairs yourself/cheap. 1. Transmission may go around 200,000 miles = $3,700 to repair. 2. Rear Air Suspension will go around the same time = $800 to $2,700/Dealer to repair. You do not have to put the Air Suspension rear back in/Kit Replacement. I however Love the air suspension for towing, etc. 3. Passenger Side leak into Heater Blower Motor. This shorts out the Fan. Easy fix, take off the wipers and the plastic grate between the windshield and the hood. There is an oval metal plate with cracked brittle caulk. Reseal this or put another bigger metal plate over this with caulk. TIP: Pull out the wet metal heat sink heater fan control module and dry it out. It will come back to life. No need to spend money on this. 4. DON"T spray off this engine at the Self-Serve Car Wash. Water on the top side will drain down and short out the anti-knock sensors on the top of the intake and you will start throwing codes. I had to replace both (2) anti-knock sensors and the wire harness. 5. The intake gasket will need to be replaced at some point if it has not been already. It will throw lean bank 1 or 2 codes when it is time to replace. I think the original was green and the replacement is orange and a better design. Easy fix, just take your time to do it right. 6. If you start to get a random misfire code when it is hot/towing that only happens when you stop it is the front O2 Sensor. Easy fix. Get on the ground and do it yourself. They sell a cheap tool to remove/replace these. 7. Low Oil Pressure when first started cold. Some of these engines will lose oil pressure when first started COLD. Then as the engine warms the oil pressure will come up to normal. That is your clue. A rubber ring in the oil pickup tube has become brittle and cracked. When it warms up it expands and your oil pressure comes back to normal. FIX: Bring this to a shop with some good old boys who are not afraid of a little work. The front differential can be dropped with two people and a hoist in about 20 minutes/intact. This will grant access to drop the oil pan which has to be removed to get to the oil pump pickup tube so that the rubber o-ring can be replaced. $350 - $550 to repair. Don't take it to the dealership for this one. They will want 1K to fix this and it isn't that hard to do. FINAL TIP: Don't be afraid to work on this vehicle. I have performed every repair on this besides the o-ring replacement and the transmission. Working on this has saved me thousands of dollars and prevented me from having to fork out another 50k for a new vehicle. Don't believe for one second that a new GMC truck with the 6.2 is the answer. People are buying these and having oil burning issues from the factory. Not to mention transmission issues, etc. Newer isn't always better. I for one will be driving my 2005 GMC Denali XL for many years to come. Sincerely, Barry G
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