I just replace radiator,now getting obd2 code, p1762,I allway having p1744 tcc code,truck has 175,000 miles ,do I need to change trany filter and fluid again,or is this a sign off major
tranmission problems ?

 

look up what those codes mean. could be anything from low tranny fluid to tranny is going on vaca w/o you. i'm not sure off hand but there are sites out there that are able to tell you what those codes are.

welcome to the site.