Sorry to say but saabs do not carry a filter, the only thing that can be changed is the fluid, and as per the code a fluid flush will not help, note check the wiring harness on the transmission itself for damage [like battery acid leakage on harness causing damage, or pest damage ] if no wiring damage check input & output shaft speed sensor if correctly mounted, if ok clear codes & test drive car at varying engine load & engine rpm for five minutes, then check if code returned, if it did then u may have a bad valve body solonoid sticking or not working, good luck.
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Wednesday, July 20th, 2011 AT 12:02 PM