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Heating problems

Tiny
THOBAR77
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 118,700 MILES
I have a 2001 Blazer. I went to warm it up the other day and no air was flowing from the vents. Eventually, after playing with the controls, the air kicked on. Now, no air flows when I have it turned on to the highest setting (4), but will flow whn I turn it down to 1, 2 or 3. It does blow warm air when on these, but nothing when turned up all the way.
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Wednesday, January 5th, 2011 AT 6:37 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
It's hard for me to be positive without testing? Found the info below in our database. You can get at the blower motor connector, loose, use testlite between purple wire and black wire, key on, hvac on. Switch to different speeds. See how lite reacts. Any hvac codes? The blower motor module may have a problem?
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Wednesday, January 5th, 2011 AT 8:22 PM

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