just last night i noticed that when im at high rpm or in VTEC it grinds going into 3rd gear it's a new tranny a S4 2000 SI tranny should be messin up already could it be the syncros?? just started to do it will GM syncromesh cure this shit from stopping?

 

do you have a short throw shifter hooked up to it or the stock one?

 

It's common....change the oil in the tranny w/ some GM syncro mesh...

 

Try some Pennzoil Synchromesh. It's a common problem in the 1999 - 2000 Si's. I have posted about the black syncro ring many times.

 

Gm uses penzoil so EAD bish

 

Then it would be Pennzoil Synchromesh

 

what he said... thats all i did when that happend to me..it worked..

 

were can i buy some GM syncromesh at and what type of gear oil do i need for this tranny (S4) 2000 Si

 

anyone?

 

from GM. or go to autozone and they sell it. It's a yellow bottle.