Trans shudder SB for 2017

Brewder · Dec 2, 2022

Hello,

My 2017 Tahoe has the occasional transmission shudder like many of you. At one point, I had the updated GM Service Bulletin that included the model I have. No idea why I didn't save the damn thing. Now I can only find Service Bulletin 18-NA-355.

Can anyone help me find the exact one that lists the 2017 with the 6 speed trans?

Thanks!
//Brew

Doubeleive · Dec 2, 2022

Brewder said:
Hello,

My 2017 Tahoe has the occasional transmission shudder like many of you. At one point, I had the updated GM Service Bulletin that included the model I have. No idea why I didn't save the damn thing. Now I can only find Service Bulletin 18-NA-355.

Can anyone help me find the exact one that lists the 2017 with the 6 speed trans?

Thanks!
//Brew

haven't heard of one for the 6spd only the 8spd
if you are having issue's with a 6l80e then it's probably the torque converter.

Brewder · Dec 2, 2022

Doubeleive said:
haven't heard of one for the 6spd only the 8spd
if you are having issue's with a 6l80e then it's probably the torque converter.

Yes sorry. I wasn't clear.. the SB I read was all about flushing the fluid in the TC.

Brewder · Dec 2, 2022

I think I found what I was looking for.

https://static.nhtsa.gov/odi/tsbs/2022/MC-10213032-0001.pdf

Doubeleive · Dec 2, 2022

Brewder said:
I think I found what I was looking for.

https://static.nhtsa.gov/odi/tsbs/2022/MC-10213032-0001.pdf

I am going to presume since it is a 2017 that it has more than 30k on it? as per the tsb the tc should be replaced

Brewder · Dec 2, 2022

Doubeleive said:
I am going to presume since it is a 2017 that it has more than 30k on it? as per the tsb the tc should be replaced

It has 44k... and is still under CPO B2B warranty... I would be SHOCKED if they offered to replace the TC...

Doubeleive · Dec 2, 2022

Brewder said:
It has 44k... and is still under CPO B2B warranty... I would be SHOCKED if they offered to replace the TC...

if the shop pulls the pan and finds shavings as shown in the TSB on the magnet then you could try doing a claim but be prepared to sit and wait it usually takes a few days for the adjuster to come and look at it and then make a decision, the shop has to agree to there approved parts & labor rate also.

Brewder · Dec 2, 2022

It was in last month for the same complaint... I presented them with TSB 21-NA-199 which they performed and changed out 6 quarts of fluid...

B-train · Dec 2, 2022

If you take it in, they will do a test drive ans record the transmission values. If it's the the torque converter, there will be very pronounced spikes in the sine wave. Had it on my 2017 yukon 8 speed. Pretty neat, I rode with my friend whonis a tech there. They flushed mine and ifs been good ever since. I know it's a completely different trans, but the diagnosis process is similar. Just some food for thought

PA-WOODCHUCK · Dec 3, 2022

Purchased our 2016 Denali Yukon XL in 2018 w/ 50K miles and at that time trans issue was addressed before purchase, now has 86K. My question anyone have video or can explain what the shudder is? I do have snap-on solus scanner and how could I use it to check for issue/record/? I'm retired and spent 40+ years on VW/Audi line but not well versed on GM for checking this issue. thanks

BTW, still got extended warranty policy until spring 2023.

Trans shudder SB for 2017

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