Thread: th350 question.
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Old 08-12-2019, 04:39 PM
78w72 78w72 is offline
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not sure on trucks, they usually have some differences or a delay in technology vs cars.

on 81 birds it is mph based from a sensor in the speedo that activates an electric solenoid inside the trans that engages & releases the lock up. theres a section on testing & trouble shooting in the GM manual. are you working on an 81?