hvac blower shut down 2 weeks ago, traced to and replaced resistor pack. bossman leaves truck w/me this afternoon with same complaint, zero blower function..........anyone have any ideas of repeat resistor pack failures on this type vehicle, o7 hummer 50k?...thanks in advance of course, kjun
The blower motor is possibly borked. High resistance will blow the resistor pack.
Megger the blower motor.
I mis-wrote "high resistnce". I mean low resistance, as in shorted turns of the blower motor's armature.
Not enough to blow the fuse but enough to "blow" the resistor pack.
R-n-R the blower motor is my suggested solution.
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