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Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
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no overdrive !!!!

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Old 09-11-2011, 07:39 PM
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Default no overdrive !!!!
we put a TCI servo in my vette last 2 week.

everything was going good since yesterday !

no more overdrive !!

the transmission want's to go in 4 but wont shift.. and if i decrease from 4-3 the rpm goes 200 higher.....

do you think a seal is worn...
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Old 09-11-2011, 10:49 PM
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Well since you just put inthe servo thats where i would look im not familiar with the TCI servo but check the 4th piston travel and the seals/
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Old 09-12-2011, 10:32 AM
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Distinguish between overdrive, and locked up. Check for
any slip codes, servo codes.
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