Sadly my 2018 build 10/17 just started the trans shudder (both V4 & V8) at 2,200 miles. I read on the Camaro forums the TSB has been revised numerous times and the triple flush and TC replacement does not work. The latest post state new transmissions are being ordered & installed. I cringe thinking about taking it to the dealer to argue it has the shudder. Those that have done the triple flush, did this really fix the problem?
2018 Trans Shudder
2018bluectsv
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GM engineers claims that the root cause of the issue was low quality silicon that was used and ended up dissolved and causing slippage or something, flush will clean this up, AFAIK it is not mechanical issue.
I'm not sure about their claim, since they're replacing with a superior fluid.
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Mine is doing it too with 7000 miles. Local dealer has ‘never heard of the issue’.
Thanks to whomever has the latest TSB info. Is post #18 the latest stuff? If so, thank you to V-locity for posting that.
Will also need a competent dealer in Dallas area...
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I know Sewell knows what it is, because Jay Lane got the information for me since I bought my V3 there.
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Thanks sir - Good info. Sewell it is.
BTW do they jerk you around when you describe the issue or do they test for it (with right equipment vs. subjective ‘feel’) right away? How long is the car out of service?
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I had the service e advisor ride with me and showed him it was doing it. that way I didn't get any BS about them not being able to reproduce it.
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I took the service advisor for a ride so they could feel it.
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I was told the root cause was the fluid allowed too much slip in the TC and it's about a 50/50 chance of it returning after the triple flush to get all the fluid out. Dealer did the flush procedure and the shudder was still there. Just got a new TC with no issues, but I haven't put too many miles on it yet.
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I rode with the shop foreman and he said it's still very subjective. They use the laptop and look for the slip, but he doesn't only use that to test. He said sometimes you feel the shudder and it doesn't show up. Normally they just try to find a hill and the sweet spot, which was just above 35ish on mine and they can feel it when they put a load on it.
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How do you test for it? any specific steps, speed, ..etc?
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In my case - steady cruise with slight incline is best. Any speed between 35-80. You can feel it in the car as a ‘washboard’ type vibration - but also you can watch the tach and see it rise about 100-200 rpm each time.
My car tends to shutter on certain up shifts as well. Typically 2-3 after a hard right turn (God knows why)
Mine isn’t really related to the V4/V8 switch FWIW.
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My car tends to shutter on certain up shifts as well. Typically 2-3 after a hard right turn (God knows why)
Mine isn’t really related to the V4/V8 switch FWIW.
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Does your dealer try to use your mods as a warranty excuse?
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it wasn't modded when I had it in the 1st time. now all it has is a CAI and a flex fuel sensor that im not even sure they would notice.
I know a guy that im going to have take care of it this time just so there are no questions.
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