2003 dodge ram diesel 5.9 cummins, auto transmission cooler

Assuming the fuel tank is breathing ok and there isn't a suction preventing the full flow of fuel, the tank is clean inside without water or sediment and the filters are clean, I only have one thought about your problem.

The fuel tank and the fuel in it is an essential part of the cooling system - the fuel return line carries excess heat from the fuel system back to the tank to be dispersed. A general rule is don't run less than a quarter full except on very short journeys or excessive wear will take place on highly stressed fuel system components.
This is more important with some designs than others and as many manufacturers utilising common rail diesel systems now fit fuel coolers it obvious they believe cool fuel is important.

This becomes more important when the fuel is a blend of diesel and bio-diesel, known to be a source of problems with the tight tolerances used in electric diesel injectors.

If your truck doesn't already have a fuel cooler I suggest you fit one.

atf plus 4 or 7176

How To Install Replace Transmission Cooler Lines 2001-06 ...

? 5:45
https://www.youtube.com/watch?v=SFEXmxxBMK8
Oct 31, 2013 - Uploaded by 1A Auto Parts
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Leaking Transmission Cooler Line Replacment Recommendations ...

www.dodgeintrepid.net > ... > General Discussion (First Generation)

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sounds as if something else gave out when got frozen ,have to do a strip down an check for cracks etc

I had the same problem, after 26k miles and replacing the computer, and many other parts on the truck transmission they replaced the tranny....same problem. In short, and another tranny they found small alum shavings in the tranny cooling system...they then replaced all lines, coolent and tranny radiator (cooler )with another new tranny....problem solved. It was the tiny metal shavings in the tranny cooling system that continued to circulate the system.

Just a suggestions but...

Check fuel filter.

Also add some fuel conditioner (e.g. HEAT for diesel) to get rid of any water that may be in your system.

Most Likely Overdrive Lockup Problem--Can Be Function Checked With Scanner.

your programing will have to be changed

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