why is my 2009 g6 trying to run away with its self?

hillbilly68

it started with my headlight going out, replaced the bulb,then my car wont start, then the security lock symbol appeared on the dash,, i jumped it off wouldnt take the charge, so i replaced the alternator, now after replacing the alternator, and putting back all the parts i removed, my car does that high revving crap ( runs away with its self) and wont drop rpms. so i have to hurry and pt it in gear for it to drop rpms. i tried to do the re learn mode reset, it made my car stop the high revving but then started this chugging thing. so i did the turn the key on and off a few times and now its back to high revving. im sure it has something to do w the ecm? any ideas?

elias

start by installing/testing if the problems disappear with a new/fully-charged battery installed. you must have done that already .

next idea: disconnect MAF and see if it runs better? if yes you need new MAF?