This is a story repeated all too often in the auto repair world:

I have a 2001 VW Jetta sedan GLS. I have had the transmission rebuilt by Aamco. I had to take it back because it got worse. It ran fine for a while but now it is doing the same thing that it was doing the first time I took it in. When the car is cold the RPM's fluctuate like I am revving the engine, but I will have the gas pedal in the same position. It usually does this until the engine warms up and stays warm for a while, then it is fine.
I talked to another mechanic and he told me to get another Aamco to look at the fluid level. I have not seen any leaks, but does that sound about right? I am really reluctant to take it back to Aamco because I already spent $3000 on this transmission. -- Jack C Moses

Jack's problem is not at all unique. Aside from the fact that VW automatic transmissions from '98 to 2002 are more or less time bombs, the same thing can happen to anybody who has a bad transmission. As to this one, a fluid level check is always first on the list of inspections, but I wouldn't hesitate to take it back to Aamco. Your warranty will be honored at any Aamco location, so if you're unsure about the shop that did the repairs, find another one to do the follow-up. It can be frustrating, but most of the time they will make it right. If you don't feel they've honored their end of the deal, be sure to take your issue all the way to the top.