My factory battery finally gave out and I replaced it. The truck starts fine but the hvac was wacky. It keeps cycling through and the auto doesn't work. I googled this and one of the "fixes" was disconnect the ground cable for 15 minutes and then connect it. I still have the original issue and now the truck is running rough, the check engine light is flashing and check stability track message is on. Everything was fine until I replaced the battery. Should I disconnect the battery and hope it works when I connect it?

 

for the hvac doors:
-koeo
-press the a/c and recirc buttons 3x simultaneously and maybe the blend doors will relearn their positions.

the flashing cel is from an engine misfire condition. this will disable the ses/abs systems. clear the dtc with a scan tool. test drive to see if they reset. if they do post the codes here. address misfire conditions promptly

 

Thanks tech2! I try the hvac thing and my buddy is going to help with the misfire condition. I'll post the codes when I get them.