2026 GMC YukonRecalls, problems, MPG & safety

“My 2026 GMC Yukon Denali Ultimate has had the vadar chrome peel in the first 7000 miles. After that a wiring pinch made the 4 wheel drive unusable during the winter months that I needed it to get into my driveway During summer months the infotainment center completely failed to a black screen and since does not function having the dealership tell me that it will need to be replaced. The 6.2 motor started ticking at 25000 miles, I took it to the dealership yesterday 10/14, the dealership is keeping the vehicle for an estimated 6 weeks to tear the motor apart. The motor is making the noise where it is reported to shut down at high speeds had I not got it in when I did. The vehicle has had no warning to indicate problems.”

“On 7/25/26 (a Saturday), we started to hear a noise in my vehicle and shortly thereafter, were sent a service alert through the GMC app and the check engine light came on. We immediately parked the vehicle and took it to the dealership when they opened on 7/27/2026 (Monday). Later that day, we were informed that my Yukon Denali, with 9,226 miles on it, has metal fragments in the oil caused by some sort of failure in the bottom half of the engine and the engine needs to be replaced. The engine was replaced and I picked up my car on 8/17/2026. The check engine light came on again on 8/20/2026 and after three trips to the dealership, my catalytic converter was replaced. Since purchasing my car on December 4, 2025, I have taken it back to the dealership 5 times for non-routine services (and once for a routine oil change). Since purchasing a BRAND NEW 2026 GMC Denali (a car that cost over $100,000) less than 10 months ago, I have been without my car for 33 days for manufacturing related issues that are all under warranty. I still don't think the engine issues are fixed (or I have another bad engine). My vehicle sounds metallic at start up (different than it sounded…”

“The contact owns a 2026 GMC Yukon. The contact stated that while walking alongside the rear end of the parked vehicle, the hands free function of the lift gate opened up unintentionally, no warning lights were illuminated. The contact was not injured, however expressed concern for safety as the lift gate will open without user consent while walking along the rear end of the vehicle. The local dealer was contacted however the vehicle was not diagnosed as the contact was advised that the vehicle was manufactured with the feature. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 60.”