Transmission code PO753

[Donell Lewis]

I had my fluid change out and new filter question is for some reason now truck will not shift into 2,3 and 4 gear ????

[dcairns]

Usually anything going wrong with the transmission, it is time to write a big check.  But you could try the obvious,

Check the wires going to the transmission, give them a wiggle.  

Check fluid level

Maybe a problem with the PCM?  Might be worth disconnecting the battery for a while and hopefully giving the PCM a bit of a reset.

[Donell Lewis]

It was transmission 

[dcairns]

Did it need a rebuild?  Also, I am curious how many miles it lasted.  Personally, I am on my third rebuild at 150k miles.   Last one was a bit of a fluke. I somehow broke the input shaft.