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Shift Solenoid (B)

Shift solenoid valve B is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid "B" valve
Shift solenoid "B" valve harness is open or shorted
Shift solenoid "B" valve circuit poor electrical connection

Check engine light
Transmission will not shift gears.

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