Kaus has the best "what's wrong with this picture" insights:
Maybe all these words have meaning to insiders that's not apparent to outsiders. But it sure looks like 1) Some union locals are holdouts in GM's campaign to get rid of inefficient work rules. (The power of union locals, even in the face of the UAW national leadership, has always been a problem when it comes to streamlining work practices); 2) Under the new agreement, the work rules haven't "been removed." Rather, the parties have pledged to complete the tooth-pulling process of negotiating their demise by the end of the year. It's a target, not a fait accompli. And what happens if that target isn't reached (as, apparently, the earlier targets weren't reached)? The deal doesn't say.
ONE more point:
When, oh when, with management have more leverage? Are these autoworkers going to quit en masse and go work somewhere else?
If management can't put the hammer down now, it never will. So GM (and Chrysler) will fail.