Sooo what happend was I have this 2005 blazer that I bought 7 years ago, went to change the bank1 sensor1 o2 sensor and after I was putting pb blast on it for a couple days went to change it, but when I went to loosen it, the exhaust pipe started breaking, so, I went and got a new direct fit cat, for it, I’ve been soaking the studs for a week and am going to try to take the studs out, but not sure what size the torx are for it . Can anyone help??and any advice on how to get this job done easy at home???

 

First Just try to take the nuts off of the studs. If the nuts come off, don't try to take out the studs. Leave them alone.

Good luck and best wishes for a successful repair.