UPDATE: So about an hour ago the shop called and asked me to come take the truck and drive her some. They had taken the Powerglide out, rechecked everything, performed all of the tests by the book, and found nothing -again. And on a short test drive by them, the issue did not show itself. Agreeing with me, they said they are not giving me the truck back yet or declaring it repaired. They just needed me to give them a hand by spending an hour of my time test driving her and then holding her for the weekend so that she not sit in their lot. They want her back Monday morning. I was fine with that. I drove her about 40 minutes. She performed beautifully. I will drive her more over the weekend.
I don't know whether I want the problem to reappear (and then find the cause) or not reappear (and not know the cause or when it might reappear). I also do not know exactly why they want her back on Monday even if the problem does not show up. But they seem to have a plan, and in light of my general trust in these guys, I will do exactly what they say. However, I do intend on sticking to my decision that, if they give me the truck back and tell me she is fixed and it turn out that she is not, I will ask for return of my money so that I can go to another shop. It just seems to me that three opportunities to repair a Powerglide should result in either a good repair or an admission that they cannot do it. {Edit: But it does bother me that the shop is clearly giving me their best attention and by now the shop could not be making any money.} -Alden
Last edited by AldenB; 07/25/2014 8:49 PM.