Gilly,

Is the "range recognition switch" the same as the "gear identification switch"? I have the no shift other than 1st and 2nd today, and about a year ago. In both situations it happened after a kind of abrupt change from D to Reverse and then to D again. I pulled over, turned off the truck in P, then restart the engine and the problem went away on both situations.

It was going 1st and 2nd only and kind of felt like it was in Low Range mode. If it comes again I waill have the codes read.

Rene