Transmission Control Module Location on 2002 Ram 1500

[MOC2008]

I have a 2002 Ram 1500 5.9 4x4 that I am trying to replace the TCM on. However, I cannot find any info that shows where this thing is located on my truck. Several things I've read mention it being in various locations, but none actually show how to get to it.

I don't see it under the hood anywhere so I assume it is accessed under/ behind the glovebox. Can anyone confirm this and tell me what all is involved in getting to it?

 

[18CrewDually]

The PCM handles the engine and transmission functions. There is not a seperate TCM. It's the unit in the engine bay with 3 plugs and bundles of wires.

 

[18CrewDually]

Although this diagram shows a seperate module but I don't have one in front of me to confirm either.

 

[HemiLonestar]

LOL.....46RE doesn't use a separate TCM (as stated). 2002-2003 RFE transmissions have a separate TCM.

 

[LoneWolf3574]

Scroll down a bit, you'll see the link for the 2002 FSM

https://www.ramforum.com/threads/3rd-gen-parts-manuals-and-2003-2004-service-manuals.6504/

 

[18CrewDually]

Scroll down a bit, you'll see the link for the 2002 FSM

https://www.ramforum.com/threads/3rd-gen-parts-manuals-and-2003-2004-service-manuals.6504/

Bad link

 

[MOC2008]

Ok well that's good to know , thanks guys.

Before I go and buy a PCM then, let's see if you guys think that will resolve the problem I'm having... My truck will start and takeoff fine. However, after it goes into 2nd or 3rd gear, it will not shift back down. So I either have to drive in fail safe mode, or turn it off and restart it each time I come to a stop. Therefore I don't drive it anywhere at the moment.

I really don't think it has anything to do with the transmission itself, because that was rebuilt just a few thousand miles back. Plus, when I restart the truck, all gears work fine through the first cycle.

Thoughts?

 

[18CrewDually]

With only few thousand miles I'd be talking to the shop that rebuilt it. If that's not an option I'd monitor the shifts and pressures through the ports. Also if the valve wasn't replaced you could have pressure bleed over or something going on with it. Hard to diagnose on a forum but I don't think your problem immediately to be electrical.
Also have you adjusted the throttle valve cable? If it is out of adjustment it can give quick shifts and no downshifts.

 

[LoneWolf3574]

Bad link

In what way is it a bad link? I would beg to differ, it works fine.

EDIT - Nevermind, I found out what you mean. I don't follow every link, just the ones I need and it looks like almost all of them are bad now. That sucks since they were a great resource in my opinion.

 

[HemiLonestar]

Shouldn't all be bad, I posted a bunch in there somewhere.

 

[LoneWolf3574]

Shouldn't all be bad, I posted a bunch in there somewhere.

One or two of the links are still good, a little weird but good, there rest are kaput like an engine with no oil.