[darrinkelly]

Thanks for the responses.

I got 7 codes although some are duplicates and I got the same codes both before and after clearing the computer.
P0740
P0785
P1860
P0740
P0785
P1810
P1860
I also have some more info on the symptoms. I can manually shift between 1st and 3rd gears but neither 2nd nor 4th will engage. If I select 2nd or 4th the truck remains in whatever gear it was in last.

Darrin