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The heater door or valve is stuck.

Tiny
DESMITH2450
  • MEMBER
  • 2003 GMC SONOMA
  • 111,000 MILES
Two years ago the heat would only partially work then something poped & it worked perfect! Now it's doing the same thing. Some say it's a valve or adoor that's not opening all the way. Some say heater core.
Sunday, January 1st, 2012 AT 5:39 PM

1 Reply

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
LOOK THIS OVER--THEN CHANGE MY SEARCH WORDS--YOU MIGHT TRY COMBINATIONS OF--YEAR--HEATER--DOORS--HVAC--SONOMA--ACTUATOR--MOTOR--ETC---ANYTHING YOU PUT, WILL GET DIFFERENT RESULTS

http://www.youtube.com/watch?v=ow7LdPrL08I

LET ME KNOW HOW IT GOES

THE MEDIC
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Sunday, January 1st, 2012 AT 5:53 PM

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