2018 GMC Yukon XL Other or unknown Problems
- Complaints
- 12about this part
- Share
- 21%of 56 total for the year
- Median mileage
- 20,935miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the other or unknown of the 2018 GMC Yukon XL, 21% of the 56 complaints for this model year. Where a mileage was given, the median is 20,935 miles. 2 of these say a crash was involved and 1 a fire, according to the filers.
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.
“Brand new Yukon Xl 2018 5250 mills, the AC takes a long time to cool down at least 15 to 20 minutes. I am in miami,fl and with 95 fahrenhait and 3 kids in the car. Gmc after 6 weeks of trying to fix the problem just let me know that the AC is working as design and there is nothing to do. In this 6 weeks I got a yukon as a loaner and the AC was working perfect, the AC took 3 min to cool down every time you turn it on.”
NHTSA complaint #11122253, filed 2018-08, 5,250 miles“Leak in rear air conditioning line at body mount. Covered under manufacturer warranty in may 2019, and same line is leaking in may 2020, GM will not warranty parts, labor (installed incorrectly) or possible vehicle defect.”
NHTSA complaint #11350268, filed 2020-08, 20,935 miles“2018 Yukon Denali engine failed June 2024 due to the lifter being bent. The dealership Richey Cadillac in Daytona Beach estimated the repairs at $18,862 and were going to have my vehicle for months. I took it to my mechanic who rebuilt the engine for $7181 in 30 days. My safety was placed at risk because while driving I had to pull over since I had no control with the engine failure. There were no messages prior to the failure.”
NHTSA complaint #11660917, filed 2025-05“I was driving and the Engine light started blinking. the car started to lose power. i had to pull off the road. the blinking stopped and then i was able to get home. I had it towed to the dealership, where they told me this was a known issue with the AFM valve train system. this is a known issue and I was not made aware of it and continued to drive my car with my children inside of it. had i known, i could have had it assessed for the potential issue. But now, IT IS TOO LATE! I am now being told i need to pay $17,000 to replace my engine. …”
NHTSA complaint #11772719, filed 2026-10“The back hatch would not open while the car was on and in park. Upon reaching in without being in the car, we turned it off, and it engaged reverse on its own, causing it to reverse immediately almost causing terminal harm to myself and my family. It careened into the woods with us unable to stop it due to the immediate speed. No one was in the vehicle, it was solely self propelled. We have a video of the path it took and the damage it caused. When the car wrecked, even when turned off, the lights and windshields wipers engaged by themselves.”
NHTSA complaint #11732026, filed 2026-04Related service bulletins
- 11037555Sep 26, 2026This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11035340Jul 21, 2026PI to help diagnose A/C concern
- 11035308Jul 21, 2026This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
- 11032777May 14, 2026This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
- 11030974Apr 1, 2026This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030092Mar 9, 2026This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11028700Feb 5, 2026This preliminary information communicates an issue with aftermarket LED headlights causing IPC warning messages and MIL along with several low speed lan DTCs.
- 11027698Jan 16, 2026This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with…
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 5 | 13% |
| 2025 | 1 | 4% |
| 2024 | 2 | 3% |
| 2023 | 20 | 9% |
| 2022 | 17 | 10% |
| 2021 | 8 | 3% |
| 2020 | 5 | 11% |
| 2019 | 3 | 4% |
| 2018 | 12 | 21% |
| 2017 | 22 | 15% |
| 2016 | 12 | 6% |
| 2015 | 26 | 8% |
| 2014 | 5 | 45% |
| 2013 | 7 | 32% |
| 2012 | 5 | 38% |
| 2011 | 21 | 45% |
| 2010 | 10 | 36% |
| 2009 | 7 | 30% |
| 2008 | 7 | 10% |
| 2007 | 11 | 11% |
| 2006 | 3 | 18% |
| 2005 | 4 | 10% |
| 2004 | 3 | 3% |
| 2003 | 2 | 2% |
| 2002 | 1 | 1% |
| 2001 | 6 | 5% |
Other parts of the 2018 GMC Yukon XL
16 complaintsBrakes
10 complaintsTransmission and drivetrain
9 complaintsElectrical system
5 complaintsSeat belts
5 complaintsSuspension
4 complaintsFuel system
3 complaintsSteering
3 complaintsAir bags
2 complaintsSeats
2 complaintsVehicle speed control
2 complaintsEngine cooling
1 complaints
← All problems reported for the 2018 GMC Yukon XL
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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