2017 Yukon Denali Shudder Problem

[cirrusaviator]

Quick update: I took the car back to CarMax, and they sent it to a GMC dealer. The dealership said they’ve never seen a shudder this bad before and will be replacing the transmission.

GMC also wants to replace some rear suspension components, bringing the total cost to a little over $10k. Frustrating, but I’m hopeful that the car will run smoothly after these fixes.

Fortunately, CarMax is covering all the costs.

 

[tom3]

It's good that Carmax stepped up and is fixing it, but pretty bad that GM transmissions are such crap these days.

 

[cirrusaviator]

It's good that Carmax stepped up and is fixing it, but pretty bad that GM transmissions are such crap these days.

I was surprised. The service tech and manager were on top of it, which was unexpected. Plus, they ordered all new brakes and rotors and are replacing all four tires. The service tech has been calling me almost every day with updates.

Yeah it's our first GMC vehicle.

 

[17_EmeraldDenali]

I literally signed on this morning because we started to experience the shutter recently. It actually had the shutter when we bought it 6 years ago with about 60k miles on the clock. Took to my local dealer where a buddy of mine works, he did the flush, and haven't had a problem since.
In the last week or so the shutter has become more prominent. I'm really hoping a fluid flush, filter change will do the trick but I'm preparing for a possible TC change.
I haven't noticed any issues with the operation of the transmission yet, just the shutter. What are the odds the transmission could need to be rebuilt? And how much are good shops typically charging for this. I have the 8 speed.