Red99
TYF Newbie
Hi guys. I'm new to the site. I recently picked up a '99 Tahoe 2WD that has the infamous slip yoke thud when applying or letting off brakes.
I know that a lot has been said about this issue already, and some say just replace the yoke with a nickel-plated one, but to me, that shouldn't be the only fix.
It seems to me that GM evidently had a faulty design in this yoke that had too much endplay. That seems to be the real issue at hand. If it were a question of the splines wearing out (hence the recommendation to go to nickel-plated version of yoke), then the yoke would be stripping out and spinning freely if the splines were getting worn.
Since that doesn't seem to be what is happening, then it seems like what is really happening is there is a sliding motion that is happening when the driveline loads & unloads-- which explains why some of the fixes like the racquet ball one tend to work-- they take up the space that is in there, so there is effectively no endplay or 'slop' in there.
My question is this-- assuming that the issue is in fact the amount of endplay in there, then has anyone measured the exact amount that is needed to be (essentially) shimmed? If it's basically a standard length by which GM made these units too long, then an equivalent-thickness 'shim' should fix the problem.
I was thinking about using a rubber or Teflon disc in mine.
Any thoughts on my theory, or any other ideas for a fix that have actually worked long-term?
Thanks for any input!
I know that a lot has been said about this issue already, and some say just replace the yoke with a nickel-plated one, but to me, that shouldn't be the only fix.
It seems to me that GM evidently had a faulty design in this yoke that had too much endplay. That seems to be the real issue at hand. If it were a question of the splines wearing out (hence the recommendation to go to nickel-plated version of yoke), then the yoke would be stripping out and spinning freely if the splines were getting worn.
Since that doesn't seem to be what is happening, then it seems like what is really happening is there is a sliding motion that is happening when the driveline loads & unloads-- which explains why some of the fixes like the racquet ball one tend to work-- they take up the space that is in there, so there is effectively no endplay or 'slop' in there.
My question is this-- assuming that the issue is in fact the amount of endplay in there, then has anyone measured the exact amount that is needed to be (essentially) shimmed? If it's basically a standard length by which GM made these units too long, then an equivalent-thickness 'shim' should fix the problem.
I was thinking about using a rubber or Teflon disc in mine.
Any thoughts on my theory, or any other ideas for a fix that have actually worked long-term?
Thanks for any input!
