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Old 05-11-2012, 12:16 PM
Genlock Genlock is offline
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Exclamation Transmission 0748 error code

This error code indicates a problem with the Govenor Pressure Solenoid, which seems to go by many names. I replaced it as well as the transducer in the effort to make my engine light go out for inspection. The truck runs fine with the exception of not always showing it's in Park when it is and not starting in that state due to the neutal safty switch not seeing it so I have to rock the truck to get it to indicate Park...then it starts. But the real issue is the 0748 code. With the Transducer and Solenoid already replaced and the truck still having the engine light on but running fine, I'm puzzled.
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Old 06-04-2012, 05:05 PM
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Possible internal leak in the tranny pump. Even a torque converter could be an issue
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Old 06-04-2012, 05:28 PM
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Possible causes- Faulty governor pressure solenoid valve

- Governor pressure solenoid valve harness or connectors
- Governor pressure solenoid valve circuit is open or shorted
- Low transmission fluid level
- Dirty transmission fluid

When is the code detected?
Engine Control Module (ECM) detectes an open or shorted condition on the solenoid circuit. Symptoms- Engine Light ON (or Service Engine Soon Warning Light)

- Transmission shift shock P0748 DODGE
Description The governor pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).
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