I need some major help, here's the issue. My outside temp sensor started reading erratic, temp reading 120 degrees one time -100 others which effected my AC unit. I replaced the sensor with a new one and here's where the other issues started showing up. After replacing the sensor I removed the neg battery cable and left off over an hour to reset the ECM or PCM whichever. After this procedure there were more issues, first this did not fix my outside temp problem Im still getting erratic temp readings which affects the AC ability to control the cars inside temp, second after i drove a few miles I got a Service Traction control system, service ABS system, Service Stability control system, Service brake system plus, now my cruise will not work. All this after i replace my outside temp sensor and disconnected the neg battery terminal. The battery is reading normal and its less than a year old. Any help to resolve this issue without having to depend on a dealer would be greatly appreciated. Forgot to mention this is on my 08 GP GXP 5.3L LS4