I have a 2006 Cobalt with a passenger door that won't open from inside or outside even when unlocked. It was taken to a dealer that said the only option was replacing a ~$500 piece of electronics. I've read of a similar problem on other sites, is this common? Is there a common and cheap fix for this? I haven't opened the door yet, I wanted to do a bit of research first. Thanks!
				
			
	