I know what I'd do...not sure if it'* the best thing, though...

I'd drill it out and then chase and tap the threads. That might be your only option at this point.

You could also think about drilling it out and putting in a heli coil.

Before dirlling and tapping. You still have bolt left, correct. And you can still get the nut on it right?

I'd suggest putting the nut on it and taking it over to your mechanic. He'* probably got torches and all the goodies needed to pop it right out. I've done quite a few tough ones like this with my mechanic and he'* a pro from all the experience cars give him.

They'll make it look like a walk through the park most likely.

You may be getting pressure on the motor mount if you have too little or too much support on the engine. Remember this is holding the motor on that side.

Went to see my mechanic. He used a stud extractor to get the stud out. New belt is now installed...

I dont know which GM engineer thought this design would be ok... Its just about impossible for the "average Joe" to change the sepentine belt! What should be a 10 min job can turn into several hours, and requires special tools.... Oh well its done now.

I'm glad you buzzed over to him. Just to give others an idea. How long was he actually working on that stud?

Once the car was up on the hoist, it took him about 10 min to get the stud out. He bitched about it the whole time... Had to use the stud extractor, which messed up the threads a bit. I insisted he run a die on it to clean them up again.

Right tools, tricks of the trade. 10 minutes....and you didn't even sweat.

When the studs are in like that sometimes it pays to stop swearing and screaming and hand it to someone that is good with stuff like that.