2018 GMC Yukon Xl

Had transmission issues (slipping, jerking and jumping ), while driving on highway. it will not accelerate when pressing the gas and would accelerate randomly / jumping fast Uphill it wont move forward on drive grar, instead it rolls back, which can hit rear vehicle. very dangerous and not derivable with bad trans as it can lead to accidents. its very common and reoccurring issue with GMC Yukon 2018 (SLT, SLE, Denali, Yukon XL..etc models )

The engine started making a ticking sound a few days after thanksgiving. I made an appointment with the dealership but they couldn’t take it in for 3 weeks. The day before my appointment I was driving on the highway and the lifter broke which caused the camshaft and a few other parts to break causing sudden lose of power and severe shaking. The parts for the repair were back ordered and it took about 5 weeks to get my vehicle back. About 7 weeks later I started the car in the driveway and it again had lose of power and severe shaking. The parts that were replaced in January failed and ruined the whole engine. There is a 6 month back order on this engine. It has been sitting at the dealership for almost 2 months already. Both incidents I believe had the potential to cause an accident if I were driving with cars close behind me.

1. Torque converter and currently at the GMC dealership right now. 2. failed to acceralate and runs backwards on hills if you brake at a light; stuttering between first and second gear. Hesitate to stop at lights, jerks very hard after delayed take off after braking at light. 3. Confirmed by the GMC dealership 4. Others, inspected by GMC dealership 5. None, no engine light or never seen on inspection equipment

The torque converter is too small for the vehicles transmission which then caused it to break and put metal into the transmission fluid. Which cause the transmission to break. My safety was at risk was because while on highway it shot high on RPMs and then made funny noise and wouldn’t go. The problem was confirmed at Aamco transmission where I have to get the transmission rebuilt. There was never a check engine light or check fluid or any codes Thrown before the problem.

I was involved in a traffic collision. A large vehicle turned left in front of me and I t boned that vehicle. We were traveling about 30-35 MPH at the moment of impact. My vehicle sustained major damage ($20,000+) to repair according to the body shop. My wife, daughter and myself sustained injuries. My wife and I have significant injuries. I truly believe, based on vehicle damages, and injuries that our airbags should’ve deployed. I believe it has a fault sensor that should be inspected.

It’s starting to warm up now that winter is behind us, so when we recently drove our 2018 Yukon XL, we turned on the air conditioning. Unfortunately, only warm air came out of the vents. We made an appointment and took the Yukon to the GMC dealer. We paid over $160 for their diagnostic fee (complete rip off), and they were immediately able to see that there was a leak in the AC condenser. The dealer service representative said that this has been happening quite frequently on 2014 and newer models and that they are all leaking in the same place, a weld on the driver’s side of the condenser. Our Yukon has $59,000 miles…this is way to young for a condenser replacement. Dealer is quoting us over $1200 for the repair. GMC continues to build these cars without known defects and passes on the costs to the customer! By the way, there is Special Coverage Adjustment 17336 that extends warranty coverage for this specific problem on GMCs, but only for 2015-2017 models.