[ninelevenick]

I think Tobra is steering you in the right direction suggesting driving your vehicle more through its cycles to clear all the readiness codes. In my experience the catalyst is the last one and most time consuming to clear. There are certain inexpensive OBDII readers that have a very easy smog sensor readiness display function. For reference, mine is made by Autel. Anyway, my question for you is how long ago did you disconnect or reconnect the battery? How many miles has the truck been driven since?