2022 GMC YUKON Fuelpropulsion System Problems

Filling this vehicle with diesel fuel per the manufacturer's user manual instructions results in a fuel leak centered between the rear wheels from somewhere at the top of the fuel tank. This has occurred during almost all fuel fill-up stops over the last year. The local dealer could not find the problem. A similar issue occurred with the 2021 diesel Yukon which has the same fuel tank as verified by part number. This was quietly remedied under warranty by the manufacturer.

I’m filing this complaint regarding my 2022 GMC Yukon Denali (VIN: [XXX] , MSRP ~$76,805) with an unresolved L87 engine recall. I made an appointment at my local GMC dealership on 5/8/25 specifically for the L87 recall. Upon arrival, staff only documented the Serial Data Gateway Module recall, which I hadn’t even known about. When I mentioned the 6.2L engine, I was asked if I was “sure.” I believe I was treated dismissively because I’m a woman. After pushing back, staff pulled up the bulletin, confirmed my engine needed replacement, and told me to “drive it until it blows up or there’s a fix, whichever comes first.” The L87 was only added to my receipt after I insisted—it was falsely listed as an “added operation,” though it was the reason I came in. I sent a certified letter to GM on 5/12/25 (signed for on 5/15/25) confirming the date I...

Vehicle stalls and shuts off. Unable to start back vehicle as it only cranks and unable to put it in neutral gear to push out of roadway or for towing.

On the morning of Thursday, [XXX], our 2022 Yukon Denali departed from West Richland, WA with the intent to arrive in Spokane, WA. After a short stop in Ritzville, WA around [XXX] local time, we entered the freeway ([XXX] to Spokane, WA) and attempted to pass a semi-truck. The vehicle got to approximately 60mph and then began to rev without any propulsion to increase speed. The vehicle shut off completely and stated that we were to put the car in neutral and attempt to restart. While going 50-60mph, we shifted into neutral and attempted to restart without any success. While the situation was extremely dangerous give the traffic (semi-truck on the right and an approaching vehicle directly behind us), we slowed the vehicle and maneuvered to the shoulder where we stopped the vehicle. The vehicle would not start so we leverage the OnStar system to call a tow truck. Unfortunately,...

After only 47,000 the Yukon started with hard starts and triggering a check engine light. Owner suggested fuel issues, the dealership suggested a bad wire. They adjust the "bare wire", and mentioned that the fuel pumps on these vehicles have issues and they would order one- but give them a holler when we have additional problems. The Yukon continued to hard start, evolving into stalling when started. The dealership was alerted but due to lack of engine codes being stored the dealership couldn't help us. Eventually when driving 57mph, the Yukon cut engine on a busy route, driver was able to get the Yukon to the shoulder and attempted restart- the Yukon was dead. AAA attempted to battery jump the Yukon without success. We were without our Yukon for 8 weeks, being placed in random trucks that couldn't support our family size. Upstate Chevy of Attica was not help in...

After the vehicle was serviced with a fuel injection cleaning and an oil change (by a GM dealership), the vehicle lost about 5 miles per gallon while driving and has not improved since. . I brought the vehicle back to the same dealership and complained. Another fuel injection cleaning was performed, but it did not help. It has been about 3 months and nothing has improved. I use 93 octane, TopTier gasoline.

My vehicle radiator fan immediately cut on high when I turned on the vehicle. The temperature of the vehicle was normal. I also experienced this when the engine was completely cold. I was assured there was no need to tow the vehicle but I could drive and schedule service with dealer. The software triggered a reduced acceleration condition. This did not allow me to accelerate as needed while navigating an interstate interchange.