i have a 2007 dodge 2500 5.9, 6 speed bone stock. About two years ago I had a rebuilt ecm installed because the mechanic said it needed it and it didn’t fix the problem it was in the shop for at that time which ended up to be the dual mass fly wheel so I had him put a south bend in and everything thing was fine for a while then summer came around and as soon as it warmed up my ac didn’t work, no speedo, abs, brake light, check engine light and don’t know if it’s related but the outside guage stays on the temp it displays right when the truck is started. The kicker is when the outside temperature drops below 45 degrees Fahrenheit everything works fine and codes go away. Need help bad I’ve already spent 1500 bucks and all they want to do is through parts at it