Heater Fans woes

howdy folks

have researched forums and found similar problems but not exact match so I apologize if askin a question that has alrdy been answered

I own a 95 Z71

my heater fan runs fine on all speeds except high ,,is this gonna be a resistor problem as well ?

Yep there is a resister block (just a bunch of coils of wires) i think its on under the hood on the pass side firewall

possibly yes , the heater fan on my 2000 quit working on everything BUT high , took it in and the fan was siezed so bad it blew ALL the resistors excpet the one for high (the heater fan still ran on high only) Never thought that that was what the problem was.