02 malibu heater blower motor problem

I replaced the blower motor resistor and the heater controls still only work on num 5.
I replaced the heater control assembly still the same problem.PLus I also checked all the fuses and relays they are fine.Before the heater control stopped blowing on 1 thru 4 there was a burning smell and blue smoke.
what else was it could be.

The control have been known to go bad. They are repairable. There is a site that shows step by step pictures on how to repair it. Pencil lead repairs the switch track. I think the link was through this site.

I replaced the blower motor resistor and the heater controls still only work on num 5.
I replaced the heater control assembly still the same problem.PLus I also checked all the fuses and relays they are fine.Before the heater control stopped blowing on 1 thru 4 there was a burning smell and blue smoke.
what else was it could be.

The default position for the switch is 5, therefore if it only works on 5, there is a problem with the wiring/system before the blower.

I doubt the cleaning of the Control Head Unit will help, since it is a mechanical connection. When it is dirty, it makes the switching bad intermittantly, such as the AC flicker.

My first suggestion would have been to replace the Blower Motor resistor, the Control Head fuse, and the HVAC relay under the hood. Since you have done this already, I would move on to the wiring. Check them using a multimeter, and you may find a break in the line. Start at the blower motor resistor, and work back to the battery.

Hope this helps.