Having problems with your 2001 Pontiac Montana ?
The windows get frosty while I'm driving and the heater is on
First off make sure your radiator is full and check the overflow level. Low coolant level will cause the van not to blow out much heat. Check your vent operation, sometimes the doors stick that directs the air flow, your fan can be blowing like crazy but very little coming out of the selected position. On some of these Montanas there is a pump in the heater hose that circulates the antifreeze, if that pump goes bad or the relay you may not be getting enough heat to your heater core to do you any good. Check these things out and I think you'll find your problem.
Repair Help & Product Troubleshooting for 2001 Pontiac Montana
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