I wasn't with them (my family) when it occurred. They did say they heard something, some kind of noise or sound, right prior to the failure - as if maybe something broke. Because I guess they asked 'What was that?' And then they knew! (Kind of) As they suddenly had no transmission operation.
So, I guess we need to next do the transmission fluid line pressure test to see if there is pump output. After that what do we do next - whichever way the result goes? No pressure means we replace the pump, or not necessarily? If there is pressure, one of the other parts you mentioned may need replaced?
I really appreciate your help! We have a great mechanic that does moonlight work for us. He ran the codes for me. He can help us, if he knows what to do. He is very good and has done a lot of work in the past for us. But he has never worked on a cadillac transmission and just wants to know what he is up against before he commits to anything. Not too long ago he replaced the heater core.
Wednesday, June 17th, 2009 AT 11:41 PM