Last post on Sep 20, 2011 at 2:11 PM
You are in the Pontiac Montana
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Pontiac Montana, Pontiac Montana SV6, Van
#3 of 4 2000 Pontiac Montana Air Conditioner
Aug 12, 2010 (7:25 pm)
Ok I have a 2000 Pontiac Montana with 152K and while sitting in the van today with the car off keys in pocket the air conditioner came on and ran for aprox 5-10 seconds. I was puzzled and over the span of two hours it did this 4 times and each time it came on for about 5-10 seconds. Any ideas??? Again the car is off keys are not in the ignition and the air conditioner is on off. I'm wondering how long this has been going on and how often is it doing it....is it harmful to the van?
#4 of 4 Re: 2000 Pontiac Montana Air Conditioner [herbiette]
Sep 20, 2011 (2:11 pm)
As you may have noticed that the first post in this topic the owner complained of water coming out of the vents. The 2003 model of the Montana had serious condensation issues with the airconditioning. GMs solution was to install an aftermarket kit that activates the blower when humidity levels get too high in the condensor box. The reason they came up with this solution was to PREVENT Legionellosis (Legionnaires' disease, an advanced form of pneumonia) from forming in the condensor box. SO THE ANSWER TO YOU QUESTION IS THAT IT IS NORMAL FOR YOUR AIRCONDITIONER BLOWER TO KICK IN FOR 5 TO 10 SECONDS EVEN WHEN THE KEYS ARE NOT IN THE IGNITION. HOWEVER, this can lead to a dead battery it you live in a high humidity area! The only way to prevent this is to install a deep cycle marine battery. ALSO BE WARNED: IF YOUR FAN EVER QUITS AND THE FUSES IN THE FUSE BOX ARE OK, YOU HAVE TO CHECK THE FUSE FOR THE AFTERMARKET KIT, FOUND BEHIND THE KICKPANEL OF THE PASSAENGER SIDE DASHBOARD.