Replaced blower motor, was working and now has stopped

Asked by Oct 06, 2018 at 11:58 AM about the 2006 GMC Envoy SLE 4WD

Question type: Maintenance & Repair

The original HVAC blower motor died in my Envoy.  We
replaced it with a brand new one.  Was working for about a
week and now has stopped.  When I turn the heater on
while idling it bogs down and bogs down worse when i turn
the AC on.  It acts like it wants to stall out when i am sitting
at a red light also. The heater takes a minute to warm up
and the ac works fine in the back.  Any ideas?

1 Answer

3,985

Likely it didn't need a new blower motor to begin with. Most common problem on our platform is the blower motor resistor. Depending on whether you have automatic climate controls or manual. The auto climate control, the part is called blower motor module. This along with the pigtail that goes to it must be replaced together. As far as the bogging down, which happens when AC OR defroster is on.....very common problem.....disconnect fuses #10 and #28 under the hood. Remove the entire throttle body, (4 bolts and a electrical connector). Clean both sides with a sensor safe spray like seafoam with a rag and toothbrush only. After reinstalling, put the fuses back in. Your truck will then perform a relearn, (doesn't take that long after driving), this problem will go bye bye. About an $8 fix.

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