Question about 1996 Chevrolet Tahoe

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700R transmission shifting late... not the TV cable

I think the valve itself might be stuck but i'm new to the whole "mechanic" thing so i don't know if i'd be able to fix it even if that were the problem.... PLEASE HELP!!

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  • jeremy_swick Feb 05, 2009

    This was supposed to be under 1988 Camaro..... not tahoe..... sry


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As long as your sure the TV cable is adjusted properly, then I would suspect you are correct in that the valve is sticking. You could try some of the mystery oil or trans clean fluids that you by at the parts stores.

Posted on Feb 08, 2009

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DTC P0755 - Shift solenoid valve B
This warning 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.

The P0755 code is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.

- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission will not shift gears.

Possible causes:
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid B valve
- Shift solenoid B valve harness or connectors
- Shift solenoid B valve circuit is open or shorted

When the a transmission solenoid is malfunction, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

Additional test details could find in this link about Repair/05/2011ne09/cip0755 (pdf)

Hope this helps (remember to rate and comment this answer).

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