You could drill out the old bleeder and replace it.

I have a 2004 EC Z71 , I installed rear 2 piston calipers and the rotors from a Yukon unto my truck . They bolted right up and you can feel them brake .

Well I just decided to go the easy route and I bought a new single piston caliper. After bleeding the brakes again it is stoping much better. I would have liked to go ahead and upgrade to the 2 piston calipers, but I didn't want to spend the money at this time to buy 2 new calipers and rotors. I still have to fix my stupid e-brake one of these days. I can't believe O'riellys wants $75 for a new set of e-brake pads.

I have seen them on Ebay for less than that. I believe they were between $40.00 and $50.00. Check it out. :judge:

Thanks. I will look else where for them. I thought that price was way too high so I didn't buy them from there.