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4l80e no reverse or od

D

drgore01

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Location
Greenbrier AR
truck was down around a year to get a new ip. Moving it around in yard i noticed no reverse. Head started to hang a little lower. After installing new ip took it for a test drive to find transmission wouldnt shift to 4th gear. on way home truck went into limp mode. Next day went to AZ and borrowed there code reader to find High boost pressure. Lowered the pressure down and reset computer. Truck was out of limp mode but still no od or reverse. I did the low gear test taking it up to around 25 and it decelerated correctly so i dont believe it to be a band issue. I have a hard time believing this to be mechanical. pulled codes today and came up with po756 solenoid b stuck off or performance mode. Does anyone have any other ideas to help a guy out.
 
I've heard of this on here before and IIRC it was to do with the solenoids or the wiring. Someone more in the know will chime in.
 
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