son of a #@$%!
Well today was the day. I was all set with my new caliper, new bleeders, extractor set, and fancy new Milwaukee 1/2" drill.
Step 1: Left-handed drill out to 3/8" followed by 3/8" spiral extractor. Didn't budge, and I didn't want to snap my extractor.
Step 2: Left-handed drill out to 7/16" followed by 7/16" spiral extractor. Didn't budge again.
Step 3: Left-handed drill out to 1/4" followed by 1/4" spiral extractor. Cracked the small portion of the screw that remained outside the bore in 3 separate places, and didn't budge the screw one bit. #@$%!
After taking the picture below (sorry about the quality), I chiseled off the portion of the screw that had been protruding from the hole (the part that cracked in 3 places). Looking inside the bore, then, it's not possible to see where the bleeder screw ends and the iron for the caliper begins.
My theory is that this bleeder is now electrochemically bonded to the caliper (due to dissimilar metals), and the only way to get it out is to heat it up until it glows, then put the extractor on it. I can't do that with the caliper mounted on the vehicle (too many sensitive rubber components). I feel the entire caliper will need to be disassembled before I can safely perform such an operation.
The bad news is that the other 3 calipers on the truck look exactly like this one did before I snapped the bleeder. I am now operating under the assumption that all 4 bleeders will be electrochemically bonded to the calipers.
So I was all set to pull this caliper and put the new one on (so I could rebuild this one on the bench) when it hit me: this job is going to cost me a fortune if I intend to do it right. The calipers are $105/each plus shipping, which works out to around $470. Wouldn't it be better to take my $470 and buy some higher-quality aftermarket calipers? Something maybe with 4 pistons? Anything to avoid rewarding Dodge for this.
So now I'm looking for some aftermarket brakes. So far I've checked Stainless Steel, EGR, and Baer... none of them make calipers for the 3rd gen trucks (apparently).

At this time, I figure I'll get only calipers and keep the stock rotors (since replacing rotors means I'll have to replace the front hub/bearing assemblies since they're now welded to the rotors

)
I'm pretty angry with Dodge right now.
Update: it would appear no one makes aftermarket calipers for these trucks. It's looking like my best bet is just to sit and wait until someone does, rather than trying to sink money into replacing them now.

Brakes work fine anyways. So much for trying to do some good preventative braking system maintenance.
-Ryan