2003 Oldsmobile Silhouette Defrost Blows Cold Air Heat Works Vent Soon You

2003 OLDSMOBILE SILHOUETTE
125,000 MILES
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ANONYMOUS
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The defrost blows cold air but the heat works in vent but as soon as you switch to defrost it turn cold
Jan 3, 2013 at 11:38 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
That sounds like an issue with the control head but it's going to require a very high end scanner to access the info in there.
Jan 3, 2013 at 11:40 PM
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