The letter GM sent out does say that theyu will address labor also. They probably know most dealers effective rate is less than their warranty rate. Also a warranty specialist for Gm has told me the same thing.
That being said in the opinion of some lawyers, they feel that the fact the law says for "like work" and "to rectify the licensee's product or warranty defects" that it could be interpreted to mean the exclusion of maintenance. If you exclude maintenance the labor issue should not be a problem for anyone.
When we did our survey we used that interpretation. It will probably end up being decided by an administrative judge.
[This message has been edited by sermgreby (edited 08-14-2007).]