Question about 1998 Chevrolet Blazer
My defrost works fine and my vent work but the truck won't blow heat down by the feet does any else have this problem?
Hi: On the back of the heater control unit are vacuum lines, make sure plug is firmly attached. FIRST though check if vehicle does not go into 4WD high. If not then you probably have a vacuum problem under the hood as vacuum controls heater, 4WD and other functions. Check to make sure vacuum lines under the hood are all attached starting with the vacuum pod (located in front L fender by brake module.) and chasing them under the hood. If you have vacuum then check heater control module and lastly heater door vacuum actuators. Hope this helps.
Posted on Feb 26, 2009
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Posted on Jan 02, 2017
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