Resistor?

[hrosser]

Our 2004 Tahoe Z71 heats and cools okay, but when fan is up all the way, it only runs on high if we are on freeway. There isn't a loud noise or anything...does this sound like resistor? I heard this is pretty easy to replace, but need diagram and step by step instructions. Can someone provide that? Thanks

[chrislate]

Our 2004 Tahoe Z71 heats and cools okay, but when fan is up all the way, it only runs on high if we are on freeway. There isn't a loud noise or anything...does this sound like resistor? I heard this is pretty easy to replace, but need diagram and step by step instructions. Can someone provide that? Thanks

its pretty easy to replace,aperantly they had a issue with those.its only two screws.i dont recomend you by a aftermerket one.i did at first then it blew.buy the one from GM.

---------- Post added at 12:02 AM ---------- Previous post was at 12:01 AM ----------

also just match the wires as you take one off reconected to the new register.