[brodystruck]

In my truck (00 RCSB) whenever I put the fan speed on '1' it doesn't blow at all. What is likely the problem?
Thanks

 

[Hit Man X]

Is it in recirculate mode?

 

[Phil]

change your cab filter

http://www.gmfullsize.com/forum/showthread.php?t=7627

 

[brodystruck]

Is it in recirculate mode?

Yes but it happens in both modes...

 

[brodystruck]

change your cab filter

http://www.gmfullsize.com/forum/showthread.php?t=7627

Just did that, problem is still there. There is no air movement at all when I have the fan speed at '1'.

 

[jebx]

Sounds like it could be the resistor. There is a resistor the controls the speeds for the blower motor. I am unsure of where it is located. Usually it is located in the ducting after the blower motor (for cooling).

 

[brodystruck]

Is it in recirculate mode?

I was wrong it only happens in recirculate mode.

 

[therealgeronimo]

There is a part that is behind the switch in the dash. I need one for my truck. It won't blow in 5. I forgot what it is called. Call your dealer and they will tell you.