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Can after replacing heater core in 1989 Chevy S-10 blazer you hear a vacuum leak coming from behind the temp control switch the air only blows out the defrost and heater vents How do you fix this?
Wiki User
∙ 2006-01-16 01:21:52
sounds like you may have a vaccum leak or a broken line to the vaccum podes on the controler behind your dash, these open and close the door to direct the air flow
Wiki User
∙ 2006-01-16 01:21:52
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