We have 42000 miles on this truck and bought 1 year old. Unit has been maintained well and looks new. Recently had the 10 speed transmissions fluid changed under normal maintenance. It was not burnt, turning more burgundy and dealer said it was a good and proper choice. Afterwards we noted a shudder and thought they made error or forgot to tighten something. Took truck back in for additional fluids and they had driveline associate drive. He said torque converter was going bad, and also warning these transmissions go bad unexpectedly and lock up. We have GMPP EXTENDED WARRANTY. Dealer requested replacement of torque converter and warranty required Field Tech due to price of repair. Field Tech drove truck, found metal in fluid and pan, and declined warranty repair and suggested more time was required. Essentially in hopes to push truck out of warranty coverage.
The worst 2020 GMC Yukon problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Transmission15
- Engine13
- Brakes3
- Driver assistance3
- Electrical2
- Fuel system2
- Seat belts1
- Tires1
- Wheels1
Specific symptoms reported on the 2020 GMC Yukon
Recalls 4
Power train: transfer case (4-wheel drive)
- What is wrong
- General Motors, LLC (GM) is recalling certain 2026 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles with four-wheel (4WD) or all-wheel drive (AWD), and certain 2015-2020 Suburban, Escalade, Escalade ESV, Yukon, Yukon XL, and Tahoe vehicles. A component missing from the drivetrain transfer case may cause the front and/or rear wheels to lock up without warning to the driver.
- Risk
- Front or rear wheel lockup increases the risk of a crash.
- Remedy
- Owners are advised not to drive their vehicle until the remedy is completed. Dealers will inspect and, if necessary, replace the transfer case assembly, free of charge. Owner notification letters were mailed May 18, 2026. Owners may contact GMC customer service at 1‑800‑462‑8782, Chevrolet customer service at 1‑800‑222‑1020 or Cadillac customer service at 1‑800‑333‑4223. GM's number for this recall is N262557620. Vehicle Identification Numbers (VINs) involved in this recall became searchable on on May 7, 2026.
Recall number 26V289000 · Recall details
Tires
- What is wrong
- General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. The affected tires were cured for too long during production.
- Risk
- Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss. Either condition can cause a loss of vehicle control, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. Owners may contact GMC customer service at 1‑888‑988‑7267, Buick customer service at 1‑866‑608‑8080, Chevrolet customer service at 1‑800‑222‑1020 or Cadillac customer service at 1‑800‑458‑8006. GM's number for this recall is N212329050.
Recall number 21V115000 · Recall details
Fuel system, gasoline: delivery: fuel pump
- What is wrong
- General Motors LLC (GM) is recalling certain 2020 Cadillac Escalade, Escalade ESV, Chevrolet Camaro, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system.
- Risk
- Over-pressurization can crack the fuel pump and cause leaks, increasing the risk of a fire in the presence of an ignition source.
- Remedy
- GM will notify owners, and dealers will replace the fuel pump, free of charge. The recall began December 18, 2019. Owners may contact Cadillac customer service at 1‑800‑333‑4223, Chevrolet customer service at 1‑800‑222‑1020, or GMC customer service at 1‑888‑988‑7267. GM's number for this recall is N192283991.
Recall number 19V837000 · Recall details
Service brakes
- What is wrong
- General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
- Risk
- Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1‑800‑630‑2438 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N192261050.
Recall number 19V761000 · Recall details
Technical service bulletins for the 2020 GMC Yukon 775
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- Unknown or other
- This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
- PI to help diagnose A/C concern
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
2020 GMC Yukon fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 5.3L 8‑cyl | RWD | 15 | 22 | 18 |
| 6.2L 8‑cyl | RWD | 14 | 23 | 17 |
| 5.3L 8‑cyl | 4WD | 14-15 | 21 | 16-17 |
| 6.2L 8‑cyl | 4WD | 14 | 20-22 | 16-17 |
What 2020 GMC Yukon owners say
Most recent owner complaints, unedited.
Engine failure due main bearing and rod failure. Engine had heavy knocking.
We just purchased our Yukon from a dealership in February (2/7/26) and it was diagnosed with premature failure of at least one AFM valve lifter as it is causing engine misfires, shaking and stalling on 7/30/26. We just hit 67,000 miles on the odometer so we are just beyond the warranty coverage. The lifters were replaced previously by the previous owners on 12/16/24.
The contact owns a 2020 GMC Yukon. The contact stated that while driving at various speeds, the vehicle jerked and the transmission malfunctioned, causing the wheels to lock up and the check engine warning light to illuminate. The vehicle was driven to a local dealer who diagnosed that the transmission clutch and pressure control solenoid had failed. The contact was advised that the transmission needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the federal safety agency Campaign Number: 26V289000 (Power Train). The contact stated that the vehicle experienced the same failure listed in the recall. The failure mileage was 118,000.
Complete transmission failure at 82,000 miles. Well maintained vehicle, not used for towing or heavy hauling. Required complete replacement. Traveling at highway speeds and-according to repair facility- valve failure caused transmission to overheat a stripped gears, causing complete failure. Vehicle was unable to shift into any gears and was left inoperable. Required towing assistance and replacement.
Issue with the trailer brake system keeps coming up on my dash. I know a lot of other people have had the same issue keeps dinging will not stop causes me to get distracted while driving. Unable to use other features because of this distraction and safety issue. The safety issue needs to be fixed this is an effective product with so many people having an issue you need to do a recall. I did let Graff Chevrolet in Mount Pleasant Michigan no and I took a picture and showed them.
The contact owns a 2020 GMC Yukon. The contact stated that while depressing the accelerator pedal, there was an abnormal popping sound coming from the engine compartment, and the vehicle hesitated while accelerating. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was provided. The local dealer had not yet contacted. The failure mileage was 44,000.
My vehicle torque converter repair on my 2020 GMC Yukon is shuddering. Why is this not a recall when there are various Yukons that are experiencing shuddering related to torque converter repair. This should be a recall. The problem has been confirmed by a GMC dealer. There were not warning lamps, no messages, or other symptoms.
I took my vehicle to a dealer to repair something unrelated to the engine. They said the oil pan was leaking and pulled the pan to discover the crank shaft bearings were failing. The vehicle has 53,765 miles at this point. This appears to be the same defect being recalled on the 2022 through 2024 models.
Severe transmission shuttering destroyed my transmission and I need a new one according to a local body shop and a GMC service center. This is a KNOWN issue with these 10 speed transmissions, but they will not recall the ones from this year, they only recalled newer models. Car has been inspected by a local autobody shop, a 3rd party warranty company, and a GMC dealership service center. Shuddering causes severe shaking while driving between 25-65mph. No lights or other symptoms, just started occurring randomly. Purchased car Feb 2025, brought it in to local auto shop November 2025 and they could not get a transmission for months. They stated one was set to be delivered by GMC Feb 6th 2026 and they day before arrival GMC called them saying it was back on back order. Called the dealership in April 2026 and they stated they were not backordered. Had vehicle transferred to dealership service center and they say it’s still on national back order with no ETA. I have been waiting for over 6 MONTHS for a new transmission. This car has been undrivable for almost longer than I have been actually able to drive it.
Compare the 2020 GMC Yukon
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Other model years
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Questions about the 2020 GMC Yukon
Is the 2020 GMC Yukon reliable?
Owners have filed 37 complaints about the 2020 GMC Yukon, fewer than a typical Yukon model year.
What is the 2020 GMC Yukon year score?
The 2020 GMC Yukon scores 90 out of 100 (good). The score compares it with the other model years of the GMC Yukon: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2020 GMC Yukon?
Transmission and drivetrain, with 15 complaints. Next is engine (13).
How many recalls does the 2020 GMC Yukon have?
4 recalls, covering power train, tires and fuel system, gasoline.
Was there a recall on the 2020 GMC Yukon transmission?
Yes, 1 recall: 26V289000. Check your VIN to see if your car still needs the free repair.
What year does the GMC Yukon have bad transmission?
The GMC Yukon model years with the most transmission complaints are 2021 (55 complaints), 2017 (48 complaints) and 2023 (47 complaints).
What gas mileage does the 2020 GMC Yukon get?
Official estimates for the 2020 GMC Yukon range from 16 to 18 mpg combined. The most efficient version (5.3L 8-cyl, RWD) gets 15 city and 22 highway.
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