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My wagon with around 3500mi on it has started this very abrupt downshift/clunk/jerk when letting off throttle and slowing.
Never had it happen until shortly after a full throttle application- which also downshifted hard.
Reading up on it the downshift clunk is very common in other applications of the 6R80.
The thing that usually fixes it is a Keep Alive Memory (KAM) clear.
Afterwards the transmission relearns it's behaviour and that usually fixes it.
Problem is no common reasonably priced scan tool can do that.
And -No- pulling the battery connection will NOT clear the KAM.
I really hate to go to the dealer for this clear procedure..I'm in the middle of getting the van reconfigured and loaded out for a 30 day+ 10,000 mi + trip in a few weeks.
I'm not opposed to spending up to say $300 for a scan tool that will clear the KAM but many of the vendors of better scan tools are evasive or unknowledgeable about their product. Yes I would spend $300+- to avoid a dealer touching my van:|
Anyone ever dealt with this?
Never had it happen until shortly after a full throttle application- which also downshifted hard.
Reading up on it the downshift clunk is very common in other applications of the 6R80.
The thing that usually fixes it is a Keep Alive Memory (KAM) clear.
Afterwards the transmission relearns it's behaviour and that usually fixes it.
Problem is no common reasonably priced scan tool can do that.
And -No- pulling the battery connection will NOT clear the KAM.
I really hate to go to the dealer for this clear procedure..I'm in the middle of getting the van reconfigured and loaded out for a 30 day+ 10,000 mi + trip in a few weeks.
I'm not opposed to spending up to say $300 for a scan tool that will clear the KAM but many of the vendors of better scan tools are evasive or unknowledgeable about their product. Yes I would spend $300+- to avoid a dealer touching my van:|
Anyone ever dealt with this?