Getting Diagnostic Codes not related to my trucks standard equipment

[scummins]

Hi All,

I recently bought this truck. I checked for error codes to see if there was anything that required my attention. I got 4 codes...

P0753 - 3-4 shift solenoid / trans relay circuit

P0713 - trans temp sensor voltage too high

P1763 - governor pressure sensor volts too high

P1687 - no cluster bus message

I am confused as to why i am getting p0753 because i have a 5 spd manual in the truck. Is this normal any insight on this and any of the other codes would be helpful. Thanks.

[dripley]

Is it possible your truck was an auto in the past? that might explain the codes.

[scummins]

How could i determine that? VIN? i looked up a decoder for the VIN but it didn't specify trans, transaxle or differentials.

[dripley]

Look on the door in the glove box. There should be a sticker listing the trans, diffs and such.

[Texas CTD]

A friend of mine has all the same codes, and his is a 5 speed. Turns out it was a 5 speed swap.

[scummins]

Thanks guys sure enough it was born as an 4 spd auto! Anything that i should be concerned about? i dont know who did the swap or where the tranny came from.

[dripley]

I dont know much about them other than a lot of people have done the swap, but i would think if everything is functioning properly that you would be good to go.

[scummins]

I assume that both the 5spd and 4spd auto use the same computer and instrument cluster circuitry? If so can i alter the programming so it knows it has a manual and it doesn't throw the codes for an auto that isn't there?