The heater switch will not go off vent to defog or heater. whats the problem?
Feb 1, 2013 at 5:21 AM
1999 Chevrolet Blazer Heater Switch Will Off Vent Defog Heater Whats
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You can turn it but it won't change. Can you hear a hissing noise in the car on the right side or under the hood. It sounds like you may have a broken vacuum line., They generally break near the intake manifold due to being exposed to heat and they are just plastic
Feb 1, 2013 at 1:08 PM
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