OK this truck has me runing in circles. first thing on the way back from a trip to the lake i got to cold in the drivers seat so i turned up the temp and it never changed it stayed on high blower and blowing cold air since it has been working most of the time so far i have not noticed the passenger side giving any problems i need to know where to start looking to figure this out i have a snapon scanner nad realized it doesnt give any kind of information regarding the HAVC controls.