when you reflash a pcm/tcm it erases the memory and everything else. once u
start driving the vehicle it relearns what it needs, exception is tire size if
you are running biggar tires then the pinion angle has to reset to the biggar
tires

CZ10 wrote:

> "CZ10" <byelen@csd.net> wrote in message
> news:5rqdnfph6MhTRkjfRVn-1g@comcast.com...
> > At 29,500 miles, the transmission on my KJ started giving a very solid
> > "thump" whenever it disengages from overdrive. Has anybody else
> > experienced this issue? Any ideas as to its cause? The eprom has already
> > been flashed by the dealer with the latest update.
> >
> > Thanks!
> >
>
> The "flash" was indeed the solution. The reason it didn't appear to resolve
> it was that the dealership's mechanic forgot to clear memory and allow it to
> retrain. Once it was cleared and retrained, everything went to normal.