Toyota Repair: 99 Toyota Sienna Squeak, silicon spray, toyota sienna

Question
Tonight I noticed a squeak coming from my 99 Toyota Sienna when I started it. I turned off the heater and it stopped. My wife thought she smelled burning rubber. When I got home I shut off the van, opened the hood and looked around. I didn't see anything unusual. The belt was still intact. I ran my finger under the exposed portion and didn't come back with debris or anything. I started the van then the heater and could hear a squeak. It was not as loud as before but could still be heard. It didn't sound like it was coming from the fans but from somewhere around the belt area. What could be making the sound?
Thank you in advance,
Chris

Answer
Turn the a/c on and see if the noise goes away, if it does there may be a problem with the a/c clutch, if the noise is still there spray somehting on the belts, water or some belt lubricant or silicon spray and see if the noise goes away, if so replace the belts.