2020 GMC Yukon Engine Problems
- Complaints
- 12about this part
- Share
- 32%of 37 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the engine of the 2020 GMC Yukon, 32% of the 37 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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.”
NHTSA complaint #11758957, filed 2026-08“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.”
NHTSA complaint #11737199, filed 2026-05“While driving to Lake Placid, NY, I experienced sudden loss of propulsion as I was driving approximately 60 mph. I was able to brake and pull over to the shoulder. I was not able to restart the vehicle - engine was dead. We were flat bed towed to a garage in Lake Placid where it was confirmed that the engine was inoperable. The vehicle is now at. GM dealer in Potsdam, NY. I believe this engine should be part of the recall!!”
NHTSA complaint #11672140, filed 2025-07“I purchased a new 2020 GMC Yukon in May of 2020. Between May 2020 and November 2025 the vehicle was routinely serviced on or before the due date recommend by the manufacturer. I had not experienced issues with the vehicle until November 2020 when the check engine light abruptly appeared and the vehicle began driving very rough. I immediately took the vehicle to the local mechanic who identified two codes (P0300 and P050D) related to the engine issues. …”
NHTSA complaint #11701391, filed 2025-11“The 2020 Yukon started to have serious loss of speed and decelerating issue when the vehicle would slow down and down shift to a lower gear. The issue with this is that once it downshifted it woul not engage in a gear again and leave me stranded on the road. I had to turn off the car and restart it for it to reengage in a gear enough to get it moving again and sometimes I had to try more than once to get it moving once it no longer wanted to engage in a gear. So in the 10 mile drive, I was left stranded at least 15 times. …”
NHTSA complaint #11724975, filed 2026-03Related service bulletins
- 11024330Sep 6, 2025This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 11020254May 7, 2025This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in…
- 11019503Apr 18, 2025This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California…
- 11017263Mar 25, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11016942Mar 4, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11014233Jan 30, 2025This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 11013269Jan 16, 2025This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 34 | 77% |
| 2025 | 38 | 67% |
| 2024 | 74 | 70% |
| 2023 | 160 | 65% |
| 2022 | 112 | 61% |
| 2021 | 189 | 55% |
| 2020 | 12 | 32% |
| 2019 | 28 | 51% |
| 2018 | 27 | 39% |
| 2017 | 33 | 17% |
| 2016 | 34 | 13% |
| 2015 | 33 | 6% |
| 2014 | 8 | 14% |
| 2013 | 10 | 9% |
| 2012 | 3 | 5% |
| 2011 | 13 | 8% |
| 2010 | 8 | 8% |
| 2009 | 4 | 4% |
| 2008 | 13 | 7% |
| 2007 | 23 | 5% |
| 2006 | 2 | 7% |
| 2005 | 7 | 8% |
| 2004 | 12 | 8% |
| 2003 | 12 | 6% |
| 2002 | 1 | 1% |
| 2001 | 3 | 2% |
| 2000 | 1 | 1% |
| 1995 | 1 | 1% |
Other parts of the 2020 GMC Yukon
15 complaintsBrakes
3 complaintsOther or unknown
3 complaintsElectrical system
2 complaintsFuel system
2 complaintsBack-over prevention (rear camera)
1 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaintsForward collision avoidance
1 complaintsSeat belts
1 complaintsTires
1 complaintsWheels
1 complaints
← All problems reported for the 2020 GMC Yukon
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology