2. air vents stay on defrost...was just occasional or when going up hill but constant now. also my cruise control activates when set to on...but doesn't seem to work.
AutoMD Member 8/15/2010My 2000 JGC has a problem with the left rear brake/ turn signal too. I think it is the light socket and may someday replace it. For now I bend the contacts and it seems to help for a while. The air vent dams are contolled by vacuum and the weak point in the vacuum system is the frail vacuum line that run along side the battery tray. Mine were melted by a leaky battery. I cut and spliced a new piece of hose to replace it. That will also fix your cruise control too since that needs the vacuum also.