The fan is messing with my head. It's worked the past 3 days although it wouldn't work at all several times last week. All fan speeds worked yesterday but somewhat weaker than usual. Also seemed to surge a bit.

Thanks trb. Very helpful. Given that the problem with the fan is intermittent, I'm only going to replace the resistor and see what happens. I assume that the blower motor has to removed to replace the resistor.

GM dealership sells blower motor for $250, twice the price of Canadian Tire ($123) Are there particular reasons why I would be better off shelling out the extra $$$ for the GM part? (GM resistor at $54 was $8 cheaper than CT). Thanks.