Hey all! I'm getting ready to do a transmission fluid pretty soon and was wondering where to buy GM Synchromesh Friction Modified for my 05 TL. I've searched around on the forums and found part #12377916 but every site I go to it says it has been replaced by part number #88900399...I'm pretty confused. Can anyone link me a site and a correct part number for the fluid? Thanks so much! -Chase Howard

 

Are you Auto or Manual? Assuming Manual but want to clear that up before we tell you the wrong stuff!

 

Chase, the GM syncromesh name and part number has been replaced with part #88900399 A/C Delco Syncromesh modified friction.
as long as you grab the modified friction, you're golden.

 

I’m in a manual, sorry I forgot to specify lol

 

Thank you so so much!