So I changed my blower motor resistor because I only had one,two,and three but no 4 after the change I still had 123 but no 4 and now I have nothing with the old or new resistor all the fuses are good idk what to do now 02 Chevy blazer LS

 

Have you checked/replaced the relay?

 

Yes just changed both relays still nothing ac compressor still kicks on blower motor won’t