1985 Blower Motor Switch Inop.

[Paul S.]

ONLY HAVE "HIGH" SPEED WHEN I TURN ON BLOWER SWITCH. ANY IDEAS WHERE TO CHECK?

[Mike T.]

Re: 1985 Blower Motor Switch Inop.

sounds like the blower resistor has opened up. it should be in the air stream held in by some screws with a 4 prong plug. if you lift the hood it is on top of the heater ac housing

[Jim T.]

Re: 1985 Blower Motor Switch Inop.

Paul from what I have lightly read in the 85 GM service manual Mike T. has given you some good information.
High blower speed power comes from a relay directly to the fan motor.
The other speeds are controlled by the resistors.

[Paul S.]

Re: 1985 Blower Motor Switch Inop.

I'm Working On It Tonight, Thanks For The Help!!