Thanks for the info. Dealer has diagnosed that the stall was caused by crank case vent valves failure. So they replaced that. Now the transmission error came on again, even after they replaced the transmission and harness. I'm starting to think it's my eclipse navigation unit, which is connected to the speed pulse from the ecu. i think everytime i hit "accept" on the nav, the transmission error comes on... and it goes away then does not come back again. but the error message does come on once in a while. what do you guys think?

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2001 Titanium Silver X5 4.4i
OEM 4.6is Body Kit
OEM Clear Tail lights/Side Markers
Replica 4.6is 20 inch wheels/tires
Remus exhaust
CustomAngeleyes.com Clear Angel Eyes
Valentine 1
Eclipse AVN5435 CD/DVD/Navigation
Eclipse Backup Camera
Dual headrest monitors