Hi ya'all! New here and I have a 98 6.5L diesel 4x4 1/2 ton with 98,000miles and have replaced my PMD/FSD heat sink,new lift pump,OPS,and just changed the fuel filter.It has been stalling on me while driving down the road for no apparent reason and i put it in nuetral and it starts right up. It isn't throwing any codes and this is my first winter with this truck.
Thanks,
JK

Welcome aboard, JK - read thru the several current FSD\PMD threads, see if anything there sets off an alarm, particuarly the FS harness ground.

Then check your grounds, battery cables, etc - also several current threads on that stuff

You're driving a computer-controlled vehicle - computers and connectors don't like damp winter weather, so do a little 'winterizing' in the engine bay.