HI there,
A thump when selecting can be a number of things, I would like it to be a sticky shift valve that is building up a bit of pressure before it moves, get the transmission inspected by a trans specialist as they will have all the gear needed to test this completely, if you let it go something may fail and that will cost big $$$$
Mark (mhpautos)
SPONSORED LINKS
Saturday, July 18th, 2009 AT 11:48 PM