Quote:

no fluid in the cooler



Sounds like the front trans pump was dry from sitting, and then did not pick up the fluid thus no pressure.

Pump rotors need oil or some lube to start working

Tom ,

2011 Ram 3500 C&C Diesel
2009 Challenger R/T
1971 Challenger Conv. 511/4 speed
1970 Challenger R/T 503/727