I am in the process of changing my wheel cylinders and have run into a snag.

GM used an torx head on the bolt. Does anyone have any idea what size head that is? As close as I can guess, it'* somewhere between a T-30 and T-40. I don't want to buy the wrong one since I can't exactly size it up at the store.

Help!

I'll tell you shortly. But give me time to dig into the back end of the Zilla....... I have my new cylinders but they haven't gone in yet.

Mechanic Dan and I did this the other night. typically he said the sockets break, therefore you tap on a 7mm? I think and then remove it before the bolt is fully out.

106 inch pounds is the torque spec per the 95 FSM.

I'm going out under the car to determine the size I have.

Yup, I saw in the FSM that the torque spec is 106 inch pounds.

Thanks for taking a look under there for me!

Jack the car up. Get the flashlight. Crawl under there. Take a quick look. Come out, look in the toolbox......



.......realize I loaned out my torx sockets to a friend across town.

:(

Dang. No problem. I'll run up to Napa and buy a 30, 35, and 40. Which ever ones it isn't, I'll return.

Thanks anyway.

I'll post what size it actually is, too.

Chilton'* calls out for a box-end wrench. But doesn't state that it'* torx head. So try a 7mm box end or socket as Boost suggested.

im sure if you took the bolt to the store(maybe pep boys) they'd size it up for you

Can't get it off to do that.