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2003 GMC Safari blower motor only works on 3rd setting

Tiny
AGEVAERT
  • MEMBER
  • 2003 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
The blower motor only functions on the 3rd highest volume setting. The highest setting is intermittent at first, then non-existent, and the 1st and 2nd levels seem insufficient, but do blow some air.

Is it the relay, resitor, or something else? What other information is needed for an accurate diagnosis?
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Sunday, January 4th, 2009 AT 10:00 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I will check the blower motor resistor then follow it with the HVAC control assembly


https://www.2carpros.com/forum/automotive_pictures/12900_blower_motr_resistor_1.jpg




https://www.2carpros.com/forum/automotive_pictures/12900_HVAC_control_assy_1.jpg

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Sunday, January 4th, 2009 AT 10:13 AM

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