Question about 1999 Buick Regal
Defroster doesn't work, air seems to flow fine but it is very cold
99 buick regal
Sounds like you have a stuck blend door in the HVAC system. If its not controled by vacuum the servo motor is bad or the vacuum line is bad. This door moves back and forth to go from vent to floor to defrost. and you have one to go from cold side to hot side. Hope this helps you
Posted on Jan 17, 2009
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Posted on Jan 02, 2017
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