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  • New Listing
    $39,948
    great price
    $6,474 below market
    • 67,795 miles
    • No accidents, 2 owners, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • Naples INFINITI (113 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Naples, FL / 113 miles away from Port Saint Lucie, FL

    Recent Arrival! Clean CARFAX.2020 GMC Yukon XL DenaliWhite Frost Tricoat4WD EcoTec3 6.2L V8 10-Speed Automatic with Overdrive4WD, 3rd Row DVD Screen, ...

    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: 1GKS2HKJ4LR102185
    Stock: P364008A
    Certified Pre-Owned: No
    Listed since: 06-11-2025

  • Price Drop
    • 50,556 miles
    • No accidents, 1 owner, rental vehicle
    • 7 Seats, 14 City / 23 Hwy MPG
    • Gary Smith Ford (431 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Fort Walton Beach, FL / 431 miles away from Port Saint Lucie, FL

    Recent Arrival! 2019 GMC Yukon XL Denali w/ Enhanced Driver Alert & Active Suspension Crimson Red Tintcoat Denali w/ Enhanced Driver Alert & Active Su...

    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 (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ1KR185057
    Stock: F3984
    Certified Pre-Owned: No
    Listed since: 06-09-2025

  • $25,500
    good price
    $4,754 below market
    • 113,216 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 7 Seats, 14 City / 23 Hwy MPG
    • Tom Bush Mazda (218 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Jacksonville, FL / 218 miles away from Port Saint Lucie, FL

    WAS $29,658. Heated Leather Seats, Third Row Seat, Nav System, Rear Air, Power Liftgate, Quad Bucket Seats, Chrome Wheels, Hitch, LPO, BLACK ROOF RACK...

    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 (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ1JR165020
    Stock: A65020
    Certified Pre-Owned: No
    Listed since: 04-07-2025

  • Selling or trading in?

    Know what your car is worth while you shop for your next vehicle.

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  • $18,997
    good price
    $3,647 below market
    • 119,411 miles
    • No accidents, 4 owners, rental vehicle
    • 8 Seats, 16 City / 23 Hwy MPG
    • iDrive Motorsports (101 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Orlando, FL / 101 miles away from Port Saint Lucie, FL

    -Down Payments starting at $795-Payments from $185 -We accept your trade-in!-Easy Financing AvailableBuy Here-Pay Here! -Schedule a Test Drive Today!-...

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 1GKS1GKC2JR330200
    Stock: 330200
    Certified Pre-Owned: No
    Listed since: 04-10-2024

  • New Listing
    $23,999
    great price
    $4,185 below market
    • 103,848 miles
    • 2 accidents, 1 owner, rental vehicle
    • 7 Seats, 14 City / 21 Hwy MPG
    • Fast Financial Auto Mall (109 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Lakeland, FL / 109 miles away from Port Saint Lucie, FL

    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/21 Highway)

    Listing Information:

    VIN: 1GKS2HKJ1JR190481
    Stock: 190481
    Certified Pre-Owned: No
    Listed since: 04-17-2025

  • New Listing
    Stock photo**
    $36,000
    great price
    $6,749 below market
    • 88,971 miles
    • 1 accident, 2 owners, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • Bozard Ford Lincoln (190 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Saint Augustine, FL / 190 miles away from Port Saint Lucie, FL

    Thank you for taking the time to look at this outstanding 2020 GMC Yukon XL ***OUR GREAT PRICE IS JUST THE BEGINNING***Onyx Black 2020 GMC Yukon XL ...

    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/20 Highway)

    Listing Information:

    VIN: 1GKS2HKJ6LR160931
    Stock: 243342A
    Certified Pre-Owned: No
    Listed since: 06-17-2025

  • New Listing
    $22,995
    good price
    $3,254 below market
    • 116,710 miles
    • No accidents, 3 owners, personal use only
    • 7 Seats, 15 City / 22 Hwy MPG
    • AutoNation Ford Margate (75 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Margate, FL / 75 miles away from Port Saint Lucie, FL

    Value Plus EditionWheels; 20" X 9" (50.8 Cm X 22.9 Cm) Polished AluminumSunroof; Power; Tilt-SlidingSeats; Second Row Bucket; ManualLpo; Chrome Gr...

    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: 1GKS1JKC7LR195067
    Stock: LR195067
    Certified Pre-Owned: No
    Listed since: 06-17-2025

  • $24,984
    good price
    $4,069 below market
    • 118,958 miles
    • 2 accidents, 1 owner, personal use only
    • 7 Seats, 14 City / 23 Hwy MPG
    • Chevrolet Buick GMC of Quincy (339 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Quincy, FL / 339 miles away from Port Saint Lucie, FL

    Delivers 23 Highway MPG and 14 City MPG! This GMC Yukon XL boasts a Gas V8 6.2L/376 engine powering this Automatic transmission. WHEELS, 22' X 8.5' (5...

    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: 1GKS1HKJ1JR274092
    Stock: 3274092
    Certified Pre-Owned: No
    Listed since: 04-02-2025

  • $17,900
    good price
    $1,854 below market
    • 168,257 miles
    • No accidents, 3 owners, rental vehicle
    • 8 Seats, 15 City / 22 Hwy MPG
    • Trust Motors (220 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Jacksonville, FL / 220 miles away from Port Saint Lucie, FL

    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: 1GKS2GKC2JR338889
    Stock: 338889
    Certified Pre-Owned: No
    Listed since: 05-09-2025

  • $26,999
    good price
    $2,383 below market
    • 123,762 miles
    • No accidents, 2 owners, personal use
    • 7 Seats, 14 City / 21 Hwy MPG
    • Dyer Chevrolet (21 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Vero Beach, FL / 21 miles away from Port Saint Lucie, FL

    2018 GMC Yukon XL Satin Steel Metallic Denali EcoTec3 6.2L V8 4WD 10-Speed Automatic with Overdrive Yukon XL Denali, 4D Sport Utility, EcoTec3 6.2L V8...

    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: 1GKS2HKJ3JR325296
    Stock: 2S25528B
    Certified Pre-Owned: No
    Listed since: 06-04-2025

  • $20,999
    fair price
    $1,120 below market
    • 135,068 miles
    • No accidents, 2 owners, personal use
    • 7 Seats, 16 City / 23 Hwy MPG
    • MDC Motors (99 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Third-row seating
    Close

    Located in Fort Myers, FL / 99 miles away from Port Saint Lucie, FL

    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: 1GKS1GKC3JR140129
    Stock: 140129
    Certified Pre-Owned: No
    Listed since: 05-08-2025

  • $26,995
    good price
    $2,657 below market
    • 116,375 miles
    • 1 accident, 4 owners, personal use only
    • 7 Seats, 14 City / 21 Hwy MPG
    • Drive Us Auto Sales (105 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Miami, FL / 105 miles away from Port Saint Lucie, FL

    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: 1GKS2HKJ5JR382535
    Stock: 382535
    Certified Pre-Owned: No

  • New Listing
    $23,991
    good price
    $1,779 below market
    • 126,343 miles
    • 1 accident, 2 owners, personal use
    • 8 Seats, 15 City / 22 Hwy MPG
    • Universal Auto Sales of Plant City (116 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Plant City, FL / 116 miles away from Port Saint Lucie, FL

    Come see us and we will make it happen for you!!!

    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: 1GKS2GKC2JR290388
    Stock: 290388
    Certified Pre-Owned: No
    Listed since: 05-12-2025

  • New Listing
    • 63,717 miles
    • No accidents, 1 owner, personal use
    • 7 Seats, 14 City / 23 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Dallas, TX / 1,047 miles away from Port Saint Lucie, FL

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    17 Combined MPG (14 City/23 Highway)

    Listing Information:

    VIN: 1GKS1HKJ3JR295669
    Stock: 2003760062
    Certified Pre-Owned: No
    Listed since: 06-06-2025

  • New Listing
    $27,900
    fair price
    $530 below market
    • 122,454 miles
    • No accidents, 4 owners, personal use
    • 7 Seats, 14 City / 23 Hwy MPG
    • Mercedes‑Benz Van Center - Baker (396 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Summerville, SC / 396 miles away from Port Saint Lucie, FL

    Used 2018 GMC Yukon XL 4x2 SUV ---- White Frost Tricoat 2018 GMC Yukon XL Denali RWD 10-Speed Automatic with Overdrive EcoTec3 6.2L V8 ---- Click ...

    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: 1GKS1HKJ6JR136807
    Stock: SP1366
    Certified Pre-Owned: No
    Listed since: 06-08-2025

  • New Listing
    $19,995
    fair price
    $1,199 below market
    • 183,892 miles
    • 2 accidents, 3 owners, personal use only
    • 7 Seats, 16 City / 23 Hwy MPG
    • Pete Moore Chevrolet (467 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Pensacola, FL / 467 miles away from Port Saint Lucie, FL

    Thank you for visiting another one of Pete Moore Automotive Team's online listings! Please continue for more information on this 2018 GMC Yukon XL SLT...

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 1GKS1GKC0JR134269
    Stock: P29695
    Certified Pre-Owned: No
    Listed since: 05-16-2025

  • New Listing
    • 80,887 miles
    • No accidents, 3 owners, personal use
    • 7 Seats, 14 City / 21 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Dallas, TX / 1,047 miles away from Port Saint Lucie, FL

    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:

    16 Combined MPG (14 City/21 Highway)

    Listing Information:

    VIN: 1GKS2HKJ4JR360445
    Stock: 2003793757
    Certified Pre-Owned: No
    Listed since: 06-11-2025

    • 89,204 miles
    • No accidents, 2 owners, personal use only
    • 7 Seats, 14 City / 21 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Chicago, IL / 1,115 miles away from Port Saint Lucie, FL

    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:

    16 Combined MPG (14 City/21 Highway)

    Listing Information:

    VIN: 1GKS2HKJ1JR214018
    Stock: 2003676459
    Certified Pre-Owned: No
    Listed since: 04-29-2025

  • $19,950
    fair price
    $1,458 below market
    • 125,492 miles
    • 1 accident, 2 owners, personal use only
    • 7 Seats, 16 City / 23 Hwy MPG
    • Raceway Chevrolet of Hartsville (486 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Hartsville, SC / 486 miles away from Port Saint Lucie, FL

    This hard to find vehicle will go fast!Adult-friendly third row.Local trade in.Well maintained and spotless.Brand new tires installed.This vehicle is ...

    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/23 Highway)

    Listing Information:

    VIN: 1GKS1GKC5GR366780
    Stock: 7122M
    Certified Pre-Owned: No
    Listed since: 06-11-2025

  • $24,674
    fair price
    $1,834 above market
    • 116,909 miles
    • No accidents, 2 owners, rental vehicle
    • 8 Seats, 16 City / 23 Hwy MPG
    • Phillips Chrysler Jeep Dodge Ram (164 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Ocala, FL / 164 miles away from Port Saint Lucie, FL

    Recent Arrival! Certified. 2018 GMC Yukon XL SLT Summit White Odometer is 2428 miles below market average! Phillips Chrysler Jeep Dodge RAM... where p...

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 1GKS1GKC8JR304796
    Stock: 240579A
    Certified Pre-Owned: No
    Listed since: 06-11-2025

  • $29,888
    fair price
    $976 above market
    • 79,580 miles
    • No accidents, 2 owners, personal use only
    • 7 Seats, 14 City / 20 Hwy MPG
    • Harbor City Auto Sales (56 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Melbourne, FL / 56 miles away from Port Saint Lucie, FL

    WOW !! CLEAN CARFAX !! DENALI PACKAGE!! EXTENDED LENGTH !! 4WD !! SUPER CLEAN !! ONLY 79K ORIGINAL MILES !! BLUETOOTH !! BACKUP CAMERA !! 20 CHROME...

    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: 1GKS2HKJ6GR394279
    Stock: 052520A
    Certified Pre-Owned: No

Showing 22 - 42 out of 697 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 2020 GMC Yukon XL in Port Saint Lucie, FL Values

Estimated values
2020 GMC Yukon XL Denali 4dr SUV 4WD (6.2L 8cyl 10A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$26,307$29,252$32,090
Clean$25,874$28,759$31,536
Average$25,153$27,938$30,614
Rough$24,215$26,869$29,414

The average list price of a used 2020 GMC Yukon XL in Port Saint Lucie, Florida is $27,670. The average mileage on a used GMC Yukon XL 2020 for sale in Port Saint Lucie, Florida is 110,067. Based on the average mileage of 110,067 for used 2020 GMC Yukon XL for sale in Port Saint Lucie, FL 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 2020 in Port Saint Lucie, Florida to be $25,153.

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