5R55S Transmission Rebuild Electric Solenoid
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One of the four major problem areas in 5R55S transmissions, according to Barrett, is the incorrect line pressure for high-performance action. The shop manually adjusts the electronic solenoid to increase line pressure from 90 psi to 180 psi. The extra pressure prevents slippage and helps keeps the drum alive, which contains four gears and the band. View Related Article
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