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Old 06-27-2018, 03:11 PM   #1
kkriskal
 
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Drives: 2018 2SS Triple Black Performance
Join Date: Jan 2018
Location: Colorado Springs, CO
Posts: 43
Automatic Very Slight Thud when Coming To A Stop (3rd To 1st Gear I think)

Hello,

I have a 2018 2SS Automatic transmission. When I am coming to a stop at a stop light, there is a slight, very slight thud when I come to a complete stop. I guess this is when the transmission is shifting from 3rd to 1st. Whereas, when I am near my garage and very slow already and then stop, this does Not happen (2nd to 1st I guess). My question is, is it normal (my dealer says it is normal just by listening to me because as usual no one could replicate it while they were driving or feel it while sitting in the passenger seat when I was replicating it for them).

It also does Not happen when I am slowing down ahead of time and coming to a very gentle stop. I don't remember this happening until 6000 miles, now at 6400 miles after several mountain trips, I can feel it. Everything else, every other shift is absolutely normal so don't want the dealer to be experimenting with my car anymore.

I also read about the TCM software update in some forum and I did also ask them about the TCM recall and they said the 2018's don't have that recall. I would really appreciate your thoughts.

I just got the service done today (regular Mobil 1 oil change and stuff). I am going on a 6000+ mile road trip starting this weekend sow will keep you updated once I run it during the trip. Meanwhile, I would really appreciate your feedback.

Last edited by kkriskal; 06-27-2018 at 03:29 PM.
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