Heater Fan

My dang fan will not work on high. Do i go buy a fan motor or is this a problem in the switch. Has anyone else had this problem with their tahoe.
The warm weather is running out soon where I live and need to fix soon.

I have a similar problem. What did you find out?

I have the same problem on my 2001 Chevy Express.

I thinkit's this ....


The problem is on the Heater Resistor which is located next to the blower motor. It is a little black square with a conector attached to it. it is held in by a phillips head screw. Take it out and see if any of the elements in the resistor are broken. The resistor steps down the flow of electricity for different switch setings. The blower runs on high when there is no resistance in the circuit. Chances are the last two resistors are broken. Bone yard- about five bucks.