I have a GMC 3500 6.5L TD,replaced the injector and pump about 5,000 miles ago.it has fuel to the pump but I am not getting any to the injectors.
I have checked all electrics and fittings I can think of.
No codes are reading.It ran fine till one cold day it would not start,ran the bateries down.jumped it two days latter and everthing good ran great but it has not started again.

has anyone any ideas.

thanks.