I have a 2000 Chev Venture. The blower switch level one did not work for about a month. Now levels one through four will not work(leaving only level five working at this time). I also have a problem with heavy sludge build up in the radiator.

Greetings;

First the heater in my 2000 Chevy Venture stopped working this summer on settings (1-4), now even 5 will not work. I was told that it could be either the switch or the resistor under the dash (which I couldn't locate). How easy is it to change the switch or the resistor? Any help would be appreciated.

I have the same problem with my blower fan that it doesn't work on the first 2 settings. You have to turn it all the way to 3 so you either get really hot or really cold. It's very annoying.

The first and second settings on the blower hasn't worked since I owned the van; today the 5th setting went out. Only the 3rd and 4th blower fan settings are working.

First the switch level 1 wouldn't work, now level 2 doesn't work (only 3 or higher) ... hot as hell or freezing, your choice.

I've read that the resistor needs replacing which makes sense--going to go find and put in myself.