2003 GMC Safari blower motor only works on 3rd setting

2003 GMC SAFARI
160,000 MILES • 6 CYL • 2WD • AUTOMATIC
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AGEVAERT
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  • 1 POST
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?
Jan 4, 2009 at 10:00 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
I will check the blower motor resistor then follow it with the HVAC control assembly


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


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

Jan 4, 2009 at 10:13 AM
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