2005 Hummer H2 havc blower motor isn't blowing at any speed level.

What is your question?

Blower might not work for days, weeks, then might blow for a day or two. New resistor and blower motor. Notice that the blower stops blowing when the ground wire has voltage at the blower motor.

How long has your 2005 Hummer H2 had this problem?

months