I have a 98 blazer and the blower motor stopped working . How can I fix this? What should I test?

 

See if a fuse is blown, if not, you're looking at replacing a blower motor most likely. You can yank it and try getting it to run by connecting it directly to a power source, I'd assume. I've never messed with one personally. Done a couple heater cores before though.

 

if the motor itself isnt working i would try the fuse and resisitor first, those are the most common, if they are good then i would hook a good ground and power to the motor to see if it works and go from there!

 

well, i have a 2001 , and the blower works but the heat does'nt... what should i do?

 

if the blower works but u get no heat i would try flushing out the heater core! Those two hoses connected to the heater core at the firewall like to deteriorate from the inside out and clog the heater core. I saw that a lot at the dealership! Replace those two hoses(pretty cheap) and flush the heater core out and you should be good to go!!!