Blower fan speed

['95TAHOE]

I have searched and looked at many posts and just not finding an answer. I have a 1995 Tahoe and the blower motor only works on high. I have replaces the entire switch assembly, blower motor and resistor. What is left to replace? I am at a dead end.

 

[lesterl]

Check the connector for the fan switch, they have tendancy to burn up also, if you have replaced the switch, resistor, and motor (if high works motor should have been good.) Also check High Blower relay as connections for speeds go thru it when not in high speed......