Clunk when slowing down

[HereinDaRockies]

It’s been the outer shell from my steering damper on my car two years ago. It became loose and gave me a similar sound which could only be heard at relatively low speed.

No we are talking about the clunk that occurs down shifting from 3 to 2

 

[Zimm]

Its the programming. You can't replicate it in manual mode. I think varies per unit depending on the backlash present in the drivetrain.

 

[HereinDaRockies]

Now I'm getting this clunk at times, while stopped at a red light, 1.5-2sec after full stop, I may get this audible dull clunk. It seems like it could be the torque converter decoupling/release, after stand still.. Thoughts?

 

[DenisM]

Could be a sticky valve in the mechatronic unit. I'd suggest doing a quick AI search on the ZF8HP55(?) transmission for clues. There's a huge library of info on the net on these transmissions

 

[Commodore]

Now I'm getting this clunk at times, while stopped at a red light, 1.5-2sec after full stop, I may get this audible dull clunk. It seems like it could be the torque converter decoupling/release, after stand still.. Thoughts?

I have been getting the exact same thing. Not every time but often. It’s been happening for a while now.