05 9400i blower motor replace, how-to?

If the relays are clicking I would blame the fan, resistor or bad connection at the fan or resistor. The different speeds go through different circuits until they reach the resistor. The resistor is what reduces the voltage and therefore changes the speed of the fan. There are 3 or 4 connections at the resistor from the different speed circuits. Only the resistor, fan or the wires between the fan and resistor are common for all speeds. Usually when replacing a fan, replacing the resistor is common practice. Unless the fan is some-what new, I would suspect it. Removing the seat isn't bad, but it is kinda a PITA to do. I would just get in there and do the job once, replace the fan and resistor. When you are in there check the wire terminals at the resistor and fan to make sure they look ok, and haven't spread causing a bad connection. Usually a bad connection results in high heat that will melt the plastic connector body.

 

Nevermind......

 

Which actuator bracket are you referring to?

 

Got it done in 45 minute and didn't break the plastic clip

 

I have this exact problem. All of the speed settings will stop working for a while, and then come back on their own. Rear blower continues to work, but the A/C stops working while the front fan isn't working so the rear just starts blowing hot air...

Did you get this figured out?

Great info, thanks

 

Does your truck have an A/C switch for the bunk? What year is your truck and what model is it?

 

I put a blower motor in the wall behind my pass seat in my 9900I 2005 model now only works on low speed any suggestions

 

Has a thermostat dial & fan speed control in the bunk, and just an on/off switch on the dash, but no separate A/C switch for just the bunk.

2001 9400i

 

Yes it does

 

Something is wrong with the main cab hvac control panel. If this panel goes dead it will kill both the cab fan and A/C. Check fuse or breaker F9-D.