[GTP Dad]

The first thing you need to do is call the Better business bureau and report this gentleman. The next thing you need to do is to contact the home/corporate office of AAMCO and report his business practices and demand that they allow you to take it to another shop to have it repaired for free because he used dexron instead of ATF+4 he has probably destroyed your transmission. (AAMCO international customer service 800-523-0401.)

Finally your vibration is probably being caused by a bad CV joint. The AAMCO guy should have caught this when he removed them to rebuild the transmission. Also I believe that all AAMCO transmission shops give you a 12 month warranty on any transmission they rebuild. This should give you some leverage.

Just a note, I have had two transmissions rebuilt by the AAMCO in Williamsport PA and have been completely satisified with the service and the transmissions have performed flawlessly, one on a Chrysler T&C and one on a Pontiac GTP.