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How to troubleshoot problems with heat doors.
1998 GMC C1500
How to troubleshoot problems with heat doors, like blend door etc.
Wednesday, February 13th, 2013 AT 12:30 AM
The blend air door is near the heater core. Basically, you need to see if the door reacts when you change from heat to cool air.
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Wednesday, February 13th, 2013 AT 12:32 AM
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