And isnt 4th gear in the 46re overdrive. So i dont understand how my over drive will turn off and on when i use the button on the colum at low speed ?

 

Do you know what gears you have in your axles?

 

3.55 in the rear and front changed the oil befor winter all was well in the difs. I will throw some more money into this but i think im gona go back to a 2500 or a standerd wold be nice but i think those are extinct. this 46re is one dumb set up

 

If everything is working properly, at 55, in O/D, you should be right around 1500 RPM. If you aren't, then O/D isn't engaging. When you hit the button to disable O/D, it will also unlock TCC for a bit. How much of an RPM jump do you get when you disable O/D, and does it drop back down shortly after the jump? (without re-engaging O/D)

 

I noticed to when i had it up with the wheels off the ground and i put it in nutral with the colum shift not the 4x4 shift that the wheels creped backward Is this normal?

 

With the engine running? Probably not terribly unusual.

 

I can feel the disengaging when im in 1st 2nd and 3rd when i hit the button on the colum but after 45 mph it dosnt shift again so my rpms climb and at 55 im at 2000rpm 65mph im at 2500rpm it should go into od 4th aroung 45mph. So if its working at lower speed when i take the over drive out i dont understand why not at 4th gear/ which is the od?

 

the od jumps up like 300 when i disengage but dosnt come back down if i dont engage the overdrive

 

O/D doesn't do anything below about 45. Disengaging does alter shift points though....

The 300 RPM jump is prolly just TCC disengaging.

Getting any codes?

 

O ok so od is only for 4th gear. And yes im getting p1740 which is od/tcc not regersting rpm drop