My blower fan for the in cab heater only works on high. I have the '****' style buttons for settings, 0, 1, 2, & 3 blow no air at all and when set to 4 it works. Anyone else seen this issue that may have some helpful advise? I have seen this happen in other vehicles before but never inquired to what the problem was.

 

Yes, There is a resistor that can be replaced for about a dollar, I have been told. I havent done it personally. The mechanic who works for me has done it on three of our trucks. I am sure someone can chime in with more specifics.

 

Part number RU1076 at oreillys... $18.99

 

yep it's that resister done a few of them look for it on the heater bye the passengers feet

 

Found it and the resistor was the problem. Thanx for the info