The blower on my wife truck, 2006 MegaCab, is just working at the maximum setting, was working fine the day before. Is that truck have the resistor like in the old time, or the **** is controlling all the speed setup by itself. If it do have a separate resistor is anybody know where it is.
Thanks! in advance.

 

Resistor packs are usually near the fan, and in the HVAC system so they can be cooled. If you find the fan, trace the wires and you'll find the resistor pack.