My ls tranny fill plug is strip and i can not get it out to fill it. I heard that you can fill through the hole on top of the tranny with a plastic plug on it. Is ti true and how many qurts does a ls tranny hold. Do any body outn there ahve any tricks our suggestions on how to get the plug out, i have try vise grips.

 

Fill through the speed sensor on the top. Its 2, 10 or 12mm bolts.

Tranny takes 2.3 quarts
Trq drain plug to 33ftlbs
The speed sensor is probably 8ftlbs

 

How'd you strip that? Isn't that a 17mm?

 

actually i thought it should be to as my past tranny were but i just bought this one it is any a1 transmission it was a 15mm bolt but not anymore. It is in there so tight, it is rounded off pretty bad. So i used a drimel tool so it is not so rounded, flaten out a little bit, and try to use some vise grips to clamp on it. would that hole at the top of the tranny work?