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Thread: GMC heater problem
08-30-2012, 12:10 PM #1
- Join Date
- Mar 2009
GMC heater problem
I have 2000 5.3 Z-71 , I changed out thermostst and my heater still doesnt work . Does anyone know of this problem in other trucks ? I heard it could be some heater door that wont open.
08-30-2012, 12:56 PM #2
- Join Date
- Mar 2006
- Cameron, NC
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It could be the blend door that is not opening up. My '03 would stay stuck on heat sometimes until I shut the truck off and then re-started it, forcing it to go into reset mode. The odds are better that it is the actuator or the head unit controls than it is to be a broken door."It went together didn't it? Well then there has to be a way to take it apart!" - Me.
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