alero heater blower 1999

ok first it would just blow on the last three settings----then nothing would work changed the high blower something fuse under the hood and only high would work---worked for awhile couple months-----now nothing works :screwy: checked the fuses and they are fine,,, which resistor should i start with???do you think thats what it is????:popcorn:

ok so i got it blowing on high again seems like the cord to the bottom of the blower was a little looseor something ,,,so ive got high and nothing else which resistor controls the fan speed??

Usually the blower motor resistor is the problem. Go get P/N 15-8966 at Autozone or wherever. The blower motor is located behind the plastic cover under the glove box. You'll see a gray or black plug under the motor. Remove it, and use a 7mm socket to remove the screws holding the resistor in. Swap in your new one, and put everything back. Hope it works for you!
Credit to erimar77 at n-body.net for the procedure, I haven't done this yet myself.

I had the same issues with my a/c blower only working on the highest setting. I also had noticed that I had water leaking issues when it rained under the passenger side seat.

Turned out the front windshield near the cowl was not sealed properly and it was leaking down into the blower motor housing and it blew out my Blower motor resistor.

I would check out that first, it’s located under the dash on the passenger side. I found a replacement part at an auto junk yard for $10 and I also resealed the front windshield by myself with some adhesive from the auto store for $8.

Hope that this helps....