I have this problem where the amount that GM has customers pay labor is often short of the time a technician will actually take to do the work. I'm sure this isn't uncommon. I try to go in and add extra time to compensate for that but I can't keep ahead of it.
Does everyone else just have the labor turned off? It doesn't seem like it in my area, but it's screwing us at this point a couple times a month for hundreds of dollars in labor.
Also accounting is a nightmare on these.