AIR BLOWS FROM HEATER THROUGHOUT DASHBOARD BUT NOT ON WINDSHIELD

1996 GMC SAVANA
150,000 MILES • 5.0L • V8 • RWD • AUTOMATIC
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BOYCEBURNS
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  • 1 POST
MY HEATER BLOWER MOTOR WORKS GREAT, BUT WE ONLY GET AIR FLOW THROUGH THE DASH VENTS AND CANNOT GET IT TO THE WINDSHIELD
Mar 13, 2015 at 7:02 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
You need to check actuator for defrost under the dash.
Mar 13, 2015 at 7:40 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Just to add, see if defrost door will operate. Note the diagram. At the moment I can't tell if door is cable operated or vacuum? I'll have to check for hvac vacuum if vacuum operated.
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Mar 13, 2015 at 7:56 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
My info on this talks about defrost cable, check the cable and defrost door attach point.
Mar 13, 2015 at 8:02 AM
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