First thanks to those who offered ideas, but those had already been
checked.
When this occured we had just gone through 2 weeks plus of vey cold
weathere ( near 0) than a foot of snow on tuesday, problem developed on
Thursday.
Truck lives outside, yesterday temp. got over 40 and everything is
working. I'm sure there is still a problem but I'm still at a loss as
to where to look.

Ilene