i did a pcm reset and now my voltage is dropping when i run light andheater and truck starts as if battery going ...coincendece..or did something happened///oz

 

Could be coincidence. I'd suggest taking the truck to an auto parts store and have someone check your battery with a load tester. Possible the alternator is acting up as well. Same auto parts store should be able to help diagnose an alternator problem as well.

 

battery the prob///part source checkd it for me ,alternator good..oz