Originally Posted by dmaxlb7@live.ca

Hi, I realize this is and OLD thread but I have just finished installing a 1998 47re in a 2001 truck and would like to share what I had to do to make the OD and TCC work. The problem was with the older gov press sensor (oval plug) temperature sensor works opposite than the newer sensor (rectangular plug). It would lock out OD because the PCM thought the fluid was -40*. I replaced just the plug for the gov prss sensor and installed the newer bracket that holds the gov press solenoid because it also retains the newer pressure sensor. Hopefully this might help someone having this issue.

Codey

Originally Posted by asylum1

It will shift into OD but only after driving for 20-30 min. Please Help! No codes are being thrown and other than that trans works perfect.

Originally Posted by UnregisteredUser

How cold is it outside where you live? Is your truck garaged or exposed overnight to the elements? Do you have an auxiliary cooler, whether factory installed or aftermarket? Did this problem just begin, or was it there in summertime, too?

Originally Posted by asylum1

I bought the truck with a bad transmission. I bought a used one with 75k and put it in and has never worked right. I'm in northern California the weather is not extreme. Even hot days at 100 degrees its the same thing 20-30 min of driving and it will start working. I assumed it was a faulty transmission so I pulled it and had it inspected. Nothing was found to be faulty. I did not mention that the heater only blows warm. Can this in some way be related via a sending unit? No aux cooler installed.

Originally Posted by HeyYou

Would be interesting to see what the PCM thinks trans temp is....

Originally Posted by UnregisteredUser

When the PCM sees the ATF temp being below 50F it locks out overdrive. I'd bet a dollar that that's what's happening here.

Originally Posted by HeyYou

Mine doesn't..... (96 though... first year for the RE) I can hit fourth gear within half a mile of the house, regardless of how cold it is outside.......

Originally Posted by UnregisteredUser

But why would you want to? That'd be like doing my mother without a rubber or a blindfold, while sober. Or at any rate I suppose it'd be like that -- ain't no one except my father ever tried, and not since he got brewer's droop while Nixon was in the White House.

Or maybe it wasn't brewer's droop? I dunno. It surely wasn't good sense.