Suburban Rear Blower Motor

[Dave01]

My rear blower only has low and high speed, won't turn off or medium. This is true with the front control, and same if you switch to rear control. I assumed the rear blower motor resistor was bad so I replaced that today, didn't solve it (I'm surprised!).

Any suggestions on where to look next?

 

[THEFERMANATOR]

You need to find the blower motor relay's. I believe there are 3 relays for the rear blower motor, each one selects a speed and directs the power through the resistor. I believe they are are back by the blower motor IIRC.

 

[bk95td]

Blower switch? check for power to the resister.

 

[Dave01]

I assume its not the switch because when I put the front switch to "rear control" and operate from the rear switch it does the same thing, just low and high. I'll look for those relays.