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Heating/air conditioning temperature and air delivery mode door actuators

(1999 GMC Suburban 1500)
in Germantown, TN on August 10, 2009
heating/air conditioning temperature and air delivery mode door actuators: the air does not blow as hard as it should, how do i service this. is there a vac hose that can be replaced?
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Popular Answer
on August 14, 2009
You may have a blower motor fault or the mode doors may not be working correctly. Is the air coming out of the proper vents at the proper time? If the air is coming out of the defroster vests all the time then you could have a vacuum hose problem. If the air flow is correct but not sufficient then I would suspect a blower motor problem.
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