Beginning around 56,000 miles the transmission started lurching and stuttering at slow speeds. It is worse when cold but never quite goes away. Dealership kept it for 3 days and felt it but said all was within normal range. Beginning around 65,000 it started stuttering when trying to accelerate while in motion, such as on the highway when trying to pass. This is not only annoying but dangerous when you can't get the power you need when needed because the transmission can't decide when to shift.
2017 GMC Yukon transmission complaints
Page 3 of 3: complaints 41 to 48 of 48, newest first, as owners wrote them.
Tl* the contact owns a 2017 gmc yukon. While attempting to pull out into traffic, the transmission suddenly slipped and the vehicle made a high pitched humming sound. The contact took the vehicle to hilton head buick gmc cadillac (located at 1090 fording island rd, bluffton, sc 29910, 843‑815‑1500) where it was diagnosed that the torque converter needed to be replaced. The vehicle had not been repaired because the dealer was unable to get the part from the manufacturer. The dealer was unable to get confirmation as to when the part would be provided. The contact attempted to call the manufacturer, but was unable to speak with anyone. The approximate failure mileage was 96,700.
From time to time the vehicle lunges forward when im stopped at a stop sign, crosswalk or a stop sign. I have had it into the dealerships numerous times but gm only wants to put bandaids on the issue, gm has a major issue with their eight speed transmission, they only have internal bulletins to their dealerships. The dealership tells you to bring the vehicle in and they will drive it with the customer, but the issue is intermittent and doesnt always lunges, gm is trying to outlast the customers hoping they will get tired of dealing with the issue and they will go away. Gm cannot afford a recall because of the size of the problem, several deaths will occur until this issue is resolved. The issue happens on the roadways
While driving at slow speeds the transmission will suddenly shift extremely hard into first gear when while lightly increasing speed. The transmission will shift extremely hard into first gear while gradually coming to a stop. Occasionally while driving slowly (parking lots) the transmission upshifts to second gear causing the car to lurch forward nearly causing a collision. This is a continuing problem that cannot be repaired at the dealership.
I purchased my 2017 yukon denali in 2017. Since the day I bought it I have noticed a problem with appears to be the transmission. I will be at a stop then I accelerate and the car has a hard shift forward. It tends to pull forward all of a sudden but very violently. I have taken in my yukon to the two gmc delerships in my area several times. They have serviced it and even performed a transmission flush but still the problem has always continued. I have been dealing with this yukon problem for two years now. Its so dangerous to drive.
I have taken it in to the dealership several time for inspection. The first time involved a repeated vibration while driving. The resolution was to change or flush the transmission fluid to get rid of any metal shavings. Since then I've taken it back into the dealership twice with reports of jerking, a delayed start when accelerating, and most recently a lurching when shifting between reverse and drive. Each time they have said this is normal.
The transmission or torque converter are shuddering how do we fix, how do I protect family, will the transmission fall out on highway can I keep driving and be safety with family?
Transmission shifts are very rough in slow traffic with as much as one to two second delays in shifting into gear with a loud thump. It is so rough that it feels like someone may have ran into the your back bumper. It is also bad enough that it startles the driver and could be a safety issue. Gm is saying that this is normal for this eight speed transmission. If my car, the one I'm driving now, had this same problem I would definitely replace the transmission. This is a 2017 denali with less than 5000 miles on it. Online there are many complaints about this and it seems that gm is trying to wait the public out now that the new vehicles have a new ten speed transmission. The dealer told me they could not fix the problem and we would have to live with it. Again, this to me is a major safety issue.
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