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1,295 listings
  • $32,500
    fair price
    $303 above market
    • 85,057 miles
    • 1 accident, 2 owners, personal use only
    • 7 Seats, 14 City / 23 Hwy MPG
    • Champion Chrysler Dodge Jeep Ram (436 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Gulfport, MS / 436 miles away from College Station, TX

    Looking for a luxurious pre-owned SUV that doesn't compromise on power and style? Check out this stunning 2018 GMC Yukon XL Denali in White Frost Tric...

    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 (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ1JR394622
    Stock: 650364A
    Certified Pre-Owned: No
    Listed since: 07-03-2025

    • 93,034 miles
    • 1 accident, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 19 Hwy MPG
    • Mac Haik Victoria (129 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Victoria, TX / 129 miles away from College Station, TX

    Onyx Black 2022 GMC Yukon XL Denali 4WD 10-Speed Automatic with Overdrive EcoTec3 6.2L V84WD.Recent Arrival!*Don't miss out! Call us today at: (3...

    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:

    16 Combined MPG (14 City/19 Highway)

    Listing Information:

    VIN: 1GKS2JKL2NR184414
    Stock: P3178
    Certified Pre-Owned: No
    Listed since: 07-01-2025

  • New Listing
    $32,905
    fair price
    $713 above market
    • 102,389 miles
    • 1 accident, 2 owners, rental vehicle
    • 7 Seats, 14 City / 20 Hwy MPG
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Fresno, CA / 1,408 miles away from College Station, TX

    High Demand,3rd Row Seat,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Brake Assist,Hands-Free Liftgate,Heated Seats,Heated Steering Wheel...

    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:

    16 Combined MPG (14 City/20 Highway)

    Listing Information:

    VIN: 1GKS2HKJXLR198405
    Stock: LR198405PX
    Certified Pre-Owned: No

  • New Listing
    • 28,773 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 18 Hwy MPG
    • Sewell Cadillac of Grapevine (165 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Grapevine, TX / 165 miles away from College Station, TX

    Sewell Cadillac of Grapevine proudly offers this 2023 GMC Yukon Denali Ultimate Four Wheel Drive that has been professionally inspected by one of our ...

    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: 1GKS2KKL2PR244653
    Stock: 5362888A
    Certified Pre-Owned: No
    Listed since: 07-08-2025

  • Stock photo**
    $74,995
    fair price
    $1,006 above market
    • 18,511 miles
    • 1 accident, 1 owner, personal use
    • 7 Seats, 14 City / 18 Hwy MPG
    • Crown Buick GMC (371 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Metairie, LA / 371 miles away from College Station, TX

    Certified. CARFAX One-Owner. LOCAL TRADE, 4WD, Apple CarPlay/Android Auto, Super Cruise. Onyx Black 2023 GMC Yukon XL Denali Ultimate 4WD 10-Speed A...

    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:

    16 Combined MPG (14 City/18 Highway)

    Listing Information:

    VIN: 1GKS2KKL0PR246689
    Stock: 243317A
    Certified Pre-Owned: No
    Listed since: 03-11-2025

    • 29,295 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 18 Hwy MPG
    • Lotus of Dallas (166 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Carrollton, TX / 166 miles away from College Station, TX

    Dealer Earth MotorCars is Proud to offer this amazing: 2024 GMC Yukon XL Denali Dual-Pane Moonroof 22'' Wheels Max Trailering Package CARFAX One-Owne...

    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: 1GKS2JKL2RR127328
    Stock: 127328
    Certified Pre-Owned: No
    Listed since: 05-28-2025

  • $35,999
    fair price
    $1,931 above market
    • 92,530 miles
    • 1 accident, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 20 Hwy MPG
    • Marc Miller Buick GMC (380 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tulsa, OK / 380 miles away from College Station, TX

    This 2020 GMC Yukon XL Denali is a powerful and luxurious SUV 4x4 that has been meticulously maintained. With 92,535 miles on the odometer, this vehic...

    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:

    16 Combined MPG (14 City/20 Highway)

    Listing Information:

    VIN: 1GKS2HKJ2LR197393
    Stock: 5T126XA
    Certified Pre-Owned: No
    Listed since: 02-02-2025

    • 39,064 miles
    • No accidents, 1 owner, rental vehicle
    • 7 Seats, 14 City / 18 Hwy MPG
    • Huntsville Toyota (49 mi away)
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Huntsville, TX / 49 miles away from College Station, TX

    Recent Arrival! CARFAX One-Owner. Clean CARFAX. **CARFAX 1 OWNER**, **CLEAN CARFAX**, **NAVIGATION**, **KEYLESS ENTRY**, **REMOTE START**, **MOONROOF*...

    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: 1GKS2JKL7RR282103
    Stock: HP282103
    Certified Pre-Owned: No
    Listed since: 07-03-2025

    • 114,461 miles
    • 1 accident, 1 owner, personal use only
    • 7 Seats, 14 City / 23 Hwy MPG
    • Shift Automotive Group (384 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Lubbock, TX / 384 miles away from College Station, TX

    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 (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ3LR154376
    Stock: P54376
    Certified Pre-Owned: No
    Listed since: 05-07-2025

  • $36,325
    fair price
    $410 above market
    • 70,356 miles
    • 1 accident, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 23 Hwy MPG
    • D3 Auto Sales (412 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Des Arc, AR / 412 miles away from College Station, TX

    D3 Auto Sales is proud to offer this outstanding 2019 GMC Yukon XL in Quicksilver Metallic. This vehicle has passed our comprehensive inspection and c...

    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:

    17 Combined MPG (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ9KR180298
    Stock: 180298
    Certified Pre-Owned: No
    Listed since: 02-12-2025

  • $45,073
    fair price
    $1,741 above market
    • 89,230 miles
    • 1 accident, 1 owner, personal use only
    • 7 Seats, 15 City / 20 Hwy MPG
    • Hallmark Hyundai Flowood (387 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Flowood, MS / 387 miles away from College Station, TX

    This 2022 GMC Yukon XL SLT in Summit White features: RWD 2 Presets For Outside Rearview Mirrors, 2 Presets For Power Driver Seat, 3rd Row 60/40 Power-...

    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/20 Highway)

    Listing Information:

    VIN: 1GKS1GKD1NR339887
    Stock: NR339887
    Certified Pre-Owned: No
    Listed since: 06-24-2025

    • 223,657 miles
    • No accidents, 3 owners, rental vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • Chihuahua Auto Sales (475 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Perryton, TX / 475 miles away from College Station, TX

    Chihuahua Auto Sales is a Buy-Here Pay-Here Dealership located on 622 S Main Street Perryton, Texas. Providing in-house financing to all people no mat...

    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:

    18 Combined MPG (15 City/22 Highway)

    Listing Information:

    VIN: 1GKS2HKC2FR545750
    Stock: 545750
    Certified Pre-Owned: No
    Listed since: 06-11-2025

  • New Listing
    $55,998
    fair price
    $395 above market
    • 61,727 miles
    • 7 Seats, 14 City / 19 Hwy MPG
    • CarMax (In-stock online)
    • Transfer available from FL to TX*
    • AWD/4WD
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Clearwater, FL / 842 miles away from College Station, TX

    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 Unavailable.

    Features and Specs:

    16 Combined MPG (14 City/19 Highway)

    Listing Information:

    VIN: 1GKS2JKL4MR150036
    Stock: 27519435
    Certified Pre-Owned: No

  • $47,295
    fair price
    $763 above market
    • 106,402 miles
    • 1 accident, 1 owner, personal use only
    • 7 Seats, 14 City / 19 Hwy MPG
    • Crown Buick GMC (371 mi away)
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Metairie, LA / 371 miles away from College Station, TX

    CARFAX One-Owner. LOCAL TRADE, 15 Diagonal Multi-Color Head-Up Display, 1st & 2nd Rows Premium Floor Liners (LPO), 2 Presets For Outside Rearview Mirr...

    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:

    16 Combined MPG (14 City/19 Highway)

    Listing Information:

    VIN: 1GKS1JKL5PR312537
    Stock: 245941A
    Certified Pre-Owned: No
    Listed since: 12-11-2024

  • New Listing
    • 113,338 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 16 City / 23 Hwy MPG
    • Lawrence Hall Chevrolet Buick GMC (238 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Third-row seating
    Close

    Located in Abilene, TX / 238 miles away from College Station, TX

    2018 GMC Yukon XL SLT Standard Edition 20" x 9" Polished Aluminum Wheels, 2nd Row Manual Bucket Seats, 3.08 Rear Axle Ratio, 3.42 Rear Axle Ratio, 3rd...

    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: 1GKS1JKC8JR388163
    Stock: 1P9834A
    Certified Pre-Owned: No
    Listed since: 06-29-2025

    • 48,517 miles
    • No accidents, 1 owner, personal use only
    • 8 Seats, 15 City / 20 Hwy MPG
    • Nyle Maxwell Chrysler Dodge Jeep RAM (86 mi away)
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Third-row seating
    • Upgraded Headlights
    Close

    Located in Austin, TX / 86 miles away from College Station, TX

    CARFAX One-Owner.***Maxwell Certified Lifetime Powertrain Protection Warranty INCLUDED****Call us now at 5**-2**-3****Lifetime Powertrain Protection:-...

    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: 1GKS1FKD1PR291742
    Stock: PR291742
    Certified Pre-Owned: No
    Listed since: 06-29-2025

  • Price Drop
    • 19,815 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 8 Seats, 15 City / 20 Hwy MPG
    • Landers Toyota (365 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Little Rock, AR / 365 miles away from College Station, TX

    2024 GMC Yukon XL SLT Backup Camera, Bluetooth, Hands-free, One Owner, Cruise Control, Power Locks, Power Windows, 12-Way Power Seat Adjusters, 2 Pres...

    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: Yes

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    17 Combined MPG (15 City/20 Highway)

    Listing Information:

    VIN: 1GKS1GKD0RR219116
    Stock: R219116P
    Certified Pre-Owned: No
    Listed since: 04-18-2025

    • 32,579 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 8 Seats, 15 City / 18 Hwy MPG
    • Universal Toyota (141 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in San Antonio, TX / 141 miles away from College Station, TX

    Passionate enthusiasts wanted for this dominant and dynamic 2024 GMC Yukon XL AT4. Enjoy quick shifting from the Automatic transmission paired with th...

    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/18 Highway)

    Listing Information:

    VIN: 1GKS2HKD7RR208343
    Stock: U0821
    Certified Pre-Owned: No
    Listed since: 05-11-2025

    • 170,152 miles
    • No accidents, 2 owners, personal use
    • 7 Seats, 14 City / 20 Hwy MPG
    • Buy Wright Auto Sales, Inc. (413 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Rogers, AR / 413 miles away from College Station, TX

    *VERY CLEAN DENALI AWD 3 ROW SUV**ALL HI WAY MILES* *CAR FAX CERTIFIED*

    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: 1GKS2HKJ0GR132337
    Stock: BW132337
    Certified Pre-Owned: No
    Listed since: 06-11-2025

  • Price Drop
    • 24,485 miles
    • No accidents, 1 owner, personal use only
    • 8 Seats, 15 City / 18 Hwy MPG
    • Driveway (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Spokane, WA / 1,622 miles away from College Station, TX

    Rare Find,3rd Row Seat,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Brake Assist,Heated Seats,Keyless Start,Lane Keeping Assist,Leather 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: No

    Features and Specs:

    16 Combined MPG (15 City/18 Highway)

    Listing Information:

    VIN: 1GKS2GKT6RR323615
    Stock: 323615CP
    Certified Pre-Owned: No

    • 24,465 miles
    • No accidents, 1 owner, personal use
    • 7 Seats, 14 City / 18 Hwy MPG
    • D & J Auto Sales (460 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Joplin, MO / 460 miles away from College Station, TX

    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: 1GKS2KKL2PR410346
    Stock: 410346
    Certified Pre-Owned: No
    Listed since: 05-14-2025

Showing 946 - 966 out of 1,295 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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