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  • $24,800
    great price
    $3,841 below market
    • 102,304 miles
    • 1 accident, 2 owners, personal use only
    • 7 Seats, 15 City / 22 Hwy MPG
    • Auto Factory Automotive (130 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Peabody, MA / 130 miles away from New Haven, CT

    Get ready to cruise in style and comfort with this sleek 2018 GMC Yukon XL! This beautifully white SUV is the perfect blend of luxury and functionalit...

    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 (15 City/22 Highway)

    Listing Information:

    VIN: 1GKS2GKC5JR275576
    Stock: 275576
    Certified Pre-Owned: No

  • New Listing
    $29,990
    good price
    $3,685 below market
    • 73,012 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • Ingersoll Auto of Danbury (27 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Danbury, CT / 27 miles away from New Haven, CT

    Odometer is 12472 miles below market average! Clean CARFAX.Bose Premium 9-Speaker System, Enhanced Driver Alert Package, Forward Collision Alert, Fr...

    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: 1GKS2GKC3JR319946
    Stock: T319946
    Certified Pre-Owned: Yes
    Listed since: 09-15-2025

  • Price Drop
    $23,904
    fair price
    $949 below market
    • 115,537 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • Empire Chevrolet of Hicksville (49 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Hicksville, NY / 49 miles away from New Haven, CT

    Onyx Black 2018 GMC Yukon XL SLT 4WD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 4WD.Finance for price is reflective after $1995 dow...

    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: 1GKS2GKC8JR375042
    Stock: UH2971T
    Certified Pre-Owned: No
    Listed since: 08-08-2025

  • Price Drop
    $27,499
    fair price
    $486 above market
    • 101,791 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • INFINITI of West Chester (169 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in West Chester, PA / 169 miles away from New Haven, CT

    2018 GMC Yukon XL SLT SLT Summit White 4WD EcoTec3 5.3L V8 6-Speed Automatic Electronic with OverdriveEnhanced Driver Alert Package, Forward Collision...

    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: 1GKS2GKC0JR318933
    Stock: 20709B
    Certified Pre-Owned: No
    Listed since: 09-01-2025

  • Advertisement

    3 Offers Nearby

    2025 GMC Yukon Denali Ultimate
    $78,995
    starting MSRP
    • 6 Colors
    • 5 Trims
    • 8 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $18,995
    good price
    $2,125 below market
    • 132,372 miles
    • 1 accident, 3 owners, rental vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • Mike's Auto Sales (69 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Garfield, NJ / 69 miles away from New Haven, CT

    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:

    18 Combined MPG (15 City/22 Highway)

    Listing Information:

    VIN: 1GKS2GKC8JR349346
    Stock: 349346
    Certified Pre-Owned: No

    • 95,385 miles
    • 1 accident, 2 owners, taxi vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • JTL Auto Sales (32 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Selden, NY / 32 miles away from New Haven, CT

    After you get a look at this beautiful 2018 GMC Yukon XL, you'll wonder what took you so long to go check it out! Curious about how far this Yukon XL...

    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:

    18 Combined MPG (15 City/22 Highway)

    Listing Information:

    VIN: 1GKS2GKC9JR121064
    Stock: 25-0112
    Certified Pre-Owned: No
    Listed since: 07-08-2025

  • Price Drop
    $21,000
    fair price
    $710 below market
    • 131,925 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 14 City / 21 Hwy MPG
    • Driveway (105 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Troy, NY / 105 miles away from New Haven, CT

    CarFax No Accidents Reported,Rare Find,3rd Row Seat,Back-Up Camera,Blind Spot Monitor,Bluetooth,Brake Assist,Hands-Free Liftgate,Heated Seats,Heated S...

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2GKC1KR377006
    Stock: KR377006P
    Certified Pre-Owned: No

  • New Listing
    $23,900
    great price
    $3,285 below market
    • 122,899 miles
    • 1 accident, 2 owners, personal use only
    • 7 Seats, 14 City / 21 Hwy MPG
    • CAR2SELL (111 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in East Windsor, NJ / 111 miles away from New Haven, CT

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2JKC4KR340366
    Stock: KR340366
    Certified Pre-Owned: No

  • Advertisement

    3 Offers Nearby

    2025 GMC Yukon Denali Ultimate
    $78,995
    starting MSRP
    • 6 Colors
    • 5 Trims
    • 8 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $27,305
    fair price
    $357 above market
    • 119,117 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 14 City / 21 Hwy MPG
    • Weirs GMC (190 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Arundel, ME / 190 miles away from New Haven, CT

    CLEAN CARFAX/NO ACCIDENTS REPORTED, Yukon XL SLT, 4D Sport Utility, EcoTec3 5.3L V8, 6-Speed Automatic Electronic with Overdrive, 4WD, Dark Sky Metall...

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2GKC9KR309911
    Stock: G25350C
    Certified Pre-Owned: Yes
    Listed since: 08-22-2025

  • New Listing
    $30,995
    good price
    $3,141 below market
    • 98,160 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • American Dream Auto Sales (79 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Warwick, RI / 79 miles away from New Haven, CT

    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: 1GKS2HKJ2KR306790
    Stock: R306790
    Certified Pre-Owned: No

  • $19,900
    great price
    $5,279 below market
    • 149,000 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 21 Hwy MPG
    • JBR Auto S (106 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Albany, NY / 106 miles away from New Haven, CT

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2HKJ9JR178322
    Stock: 178322
    Certified Pre-Owned: No
    Listed since: 06-16-2025

  • $29,449
    great price
    $7,656 below market
    • 78,278 miles
    • No accidents, 2 owners, personal use
    • 7 Seats, 14 City / 21 Hwy MPG
    • Sawyer Lyons Buick GMC (93 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Randolph, NJ / 93 miles away from New Haven, CT

    4WD. Priced below KBB Fair Purchase Price! Odometer is 45870 miles below market average! Clean CARFAX.Iridium Metallic 2018 GMC Yukon XL Denali 4W...

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2HKJ1JR359236
    Stock: P17847
    Certified Pre-Owned: No
    Listed since: 07-31-2025

  • Advertisement

    3 Offers Nearby

    2025 GMC Yukon Denali Ultimate
    $78,995
    starting MSRP
    • 6 Colors
    • 5 Trims
    • 8 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $25,999
    fair price
    $598 below market
    • 112,259 miles
    • No accidents, 2 owners, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • Wholesale Outlet Automotive Group (153 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Blackwood, NJ / 153 miles away from New Haven, CT

    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: 1GKS2HKJ1HR389931
    Stock: 10480
    Certified Pre-Owned: No

  • New Listing
    $23,999
    fair price
    $198 above market
    • 132,300 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 14 City / 21 Hwy MPG
    • Advanced Auto Sales (94 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in North Attleboro, MA / 94 miles away from New Haven, CT

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2GKC6KR320929
    Stock: R3739
    Certified Pre-Owned: No

  • New Listing
    Stock photo**
    • 77,606 miles
    • 8 Seats, 14 City / 21 Hwy MPG
    • Lynnes Subaru (76 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Third-row seating
    • Power Driver Seat
    Close

    Located in Bloomfield, NJ / 76 miles away from New Haven, CT

    This 2019 GMC Yukon XL has passed the Lynnes comprehensive 172 point inspection with flying colors. Our ASE certified technicians have inspected this ...

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    16 Combined MPG (14 City/21 Highway)

    Listing Information:

    VIN: 1GKS2FKC1KR328270
    Stock: SE3431P
    Certified Pre-Owned: No
    Listed since: 09-22-2025

  • Price Drop
    $23,291
    good price
    $5,155 below market
    • 120,789 miles
    • No accidents, 2 owners, personal use only
    • 8 Seats, 14 City / 23 Hwy MPG
    • Fred Beans Lincoln (134 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Doylestown, PA / 134 miles away from New Haven, CT

    This 2018 GMC Yukon XL Denali in White Frost Tricoat delivers full-size luxury, advanced safety, and exceptional capability. Powered by a 6.2L EcoTec3...

    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: 1GKS1HKJ4JR299746
    Stock: LD501201
    Certified Pre-Owned: No
    Listed since: 04-30-2025

  • Advertisement

    3 Offers Nearby

    2025 GMC Yukon Denali Ultimate
    $78,995
    starting MSRP
    • 6 Colors
    • 5 Trims
    • 8 Packages
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $14,995
    great price
    $6,187 below market
    • 157,440 miles
    • No accidents, 2 owners, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • NJ Exotic Motors (82 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Elizabeth, NJ / 82 miles away from New Haven, CT

    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: 1GKS2HKJ4GR293595
    Stock: 293595
    Certified Pre-Owned: No

  • Price Drop
    $29,750
    good price
    $3,258 below market
    • 97,614 miles
    • No accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 21 Hwy MPG
    • World Volkswagen of Neptune (98 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Neptune, NJ / 98 miles away from New Haven, CT

    2018 GMC Yukon XL Denali Summit White 4WD EcoTec3 6.2L V8One-Owner Clean CARFAX *Clean Title * Non-Smoker *ALL WHEEL DRIVE, 4x4, APPLE CARPLAY / ANDRO...

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2HKJ3JR162892
    Stock: PK11858
    Certified Pre-Owned: No
    Listed since: 09-11-2025

    • 164,927 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 14 City / 21 Hwy MPG
    • Best Cars R US (78 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Irvington, NJ / 78 miles away from New Haven, CT

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2GKC9KR282158
    Stock: 282158
    Certified Pre-Owned: No

  • Price Drop
    $23,990
    good price
    $3,282 below market
    • 94,920 miles
    • 2 accidents, 3 owners, personal use
    • 7 Seats, 14 City / 23 Hwy MPG
    • Bomnin Chevrolet Buick GMC Nanuet (58 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Nanuet, NY / 58 miles away from New Haven, CT

    Priced below KBB Fair Purchase Price! Odometer is 22649 miles below market average! 10 Speakers, 3rd Row DVD Screen, 4-Wheel Antilock Disc Brakes, 5 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:

    17 Combined MPG (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ8JR190304
    Stock: B190304A
    Certified Pre-Owned: No
    Listed since: 07-03-2025

  • $24,995
    good price
    $3,101 below market
    • 110,054 miles
    • No accidents, 2 owners, personal use
    • 8 Seats, 15 City / 22 Hwy MPG
    • Taktak Auto Group (125 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Tewksbury, MA / 125 miles away from New Haven, CT

    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 (15 City/22 Highway)

    Listing Information:

    VIN: 1GKS2GKC9JR309082
    Stock: 309082
    Certified Pre-Owned: No
    Listed since: 07-27-2025

Showing 1 - 21 out of 445 listings

Consumer Reviews for the GMC Yukon XL

Read recent reviews for the GMC Yukon XL
Overall Consumer Rating
3.9 out of 5 stars36 Reviews
Write a vehicle reviewSee all 36 reviews
  • 5 star
    (58%)
  • 4 star
    (6%)
  • 3 star
    (14%)
  • 2 star
    (8%)
  • 1 star
    (14%)
5 out of 5 stars

XL for empty nesters

Robert Bob, 02/10/2017
2016 GMC Yukon XL Denali 4dr SUV (6.2L 8cyl 8A)
This is a big SUV that doesn't feel big when driving. Easy to park and has a small turning radius. We often have our kids and grandkids with us and routinely haul 7 people in this and love the legroom and cargo room with everyone on board. The ride and quiet cabin are spectacular and the fuel mileage is better than expected. Has tons of torque and pulling our 4,000 lb boat is … effortless. It is easy to back the boat up too with large mirrors and good backup camera. Like the auto leveling rear shocks. My only disappointment in the vehicle is GM's decision to eliminate the ability to pause and rewind live radio that my previous vehicles had. This was available before 2016 but GM eliminated it which is a shame. My 2015 GMC Canyon had this feature but a $70,000 vehicle doesn't. Doesn't make sense! Had trouble with torque converter clutch but dealer was able to resolve with fluid flush and new transmission fluid type. Problem caused shudder or vibration in 8th gear that felt like going over rumble strips. RPM fluctuated between 1600 and 1800 when TCC clutch was not happy. Downshifting into 7th gear would eliminate problem at the expense of poorer gas milage. Problem started at 16,000 miles. Have 17,000 miles on it now and problem is gone after fluid flush and change. Car is very quiet and subsequently any rattles are heard very easily. Chased a problem with a rattling/popping noise that sounded like is was coming from the right side dash area. Disassembled many components inside the glove box/dash area looking for it and finally found the noise was coming from the right front inner fender well! The noise could be duplicated by standing on and off the front part of the running board. The noise was from a loose spot weld on inner fender metal. Placing a section of close cell foam under panel solved the noise! Fixed by owner! Still not happy with GMC 22" wheels that cause harsh and rough ride. 22" wheels should not be an option on this car! Changed to Michelin Defender tires and solved vibration problems with original Bridgestone Dueler tires but this 22" size tire has low profile sidewalls which contributes to tires not absorbing bumps well and transmitting the bumps to the passengers. Car would ride much smoother on 18" or maybe 20" wheels. These wheels were a $2,400 option from GMC and it was a waste of money in my opinion. They are also very hard to keep clean and not very happy with the chrome plastic inserts on the wheels. Just learned the owner can't rotate tires and reset TPMS system without a special tool! This tool should be included with a $70,000 vehicle. Unfortunate that a simple routine simple maintenance task can't be accomplished without the $100 tool or a trip to the dealer or tire shop. If the TPMS system is not updated after wheel rotation, tire positions will not agree with dash display in the event of a tire problem. Have recent issue with powered running boards installed by GMC. They fail to extend when doors are opened occasionally. Both sides are affected. They have been lubricated and problem still exists. Car sits very high on 22” wheels and the running boards are critical for wife or kids to get in. Dealer service visit scheduled to diagnose/repair. Finally got dealer to recognize my intermittent running board problem by taking multiple video captures when they failed to extend or retract. They replaced the motors on both sides and they are now working normally. Torque converter clutch shudder returned at 35,000 miles. Dealer replaced trans fluid with a newer updated fluid that doesn’t absorb moisture. Problem has been resolved for now, again! Noticed leaking left axle seal while rotating tires. Taking back to dealer again to repair! Too bad the dealer didn’t notice this problem while changing trans fluid a week earlier! Still love the car and there is nothing comparable in the marketplace. Average MPG on Hwy is 23 and 19 around town. Added oil "catch can" at 37,000 miles and cleaned intake manifold and valves prior to addition. The catch can captures about 4 oz of breather oil every 4,000 miles. Running Amsoil Signature 0W-20 oil full synthetic with once a year change. Catch can should be installed when new to keep intake valves and manifold clean. GDI engines are prone to carbon buildup on valves due to design.
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Used 2018 GMC Yukon XL in New Haven, CT Values

Estimated values
2018 GMC Yukon XL SLT 4dr SUV 4WD (5.3L 8cyl 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$17,227$20,244$22,730
Clean$16,852$19,790$22,204
Average$16,226$19,032$21,327
Rough$15,413$18,046$20,187

The average list price of a used 2018 GMC Yukon XL in New Haven, Connecticut is $24,967. The average mileage on a used GMC Yukon XL 2018 for sale in New Haven, Connecticut is 113,699. Based on the average mileage of 113,699 for used 2018 GMC Yukon XL for sale in New Haven, CT 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 Yukon XL 2018 in New Haven, Connecticut to be $16,226.

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