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Reload this Page Blazer dash vents blow no air
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Old 05-28-2008, 09:23 PM   #1
silvers3945
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Blazer dash vents blow no air
I have a 96 blazer that will not blow air thru the dash vents, but blows air thru defroster and floor vents fine. Any idea what the problem might be?
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Old 05-28-2008, 09:24 PM   #2
Dewitt88
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Re: Blazer dash vents blow no air
Relay on the firewall. I beleive its the middle one. Its black. $18 at autozone. I just replaced mine.
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Old 05-28-2008, 09:38 PM   #3
silvers3945
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Re: Blazer dash vents blow no air
Is this a blower relay?
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Old 05-28-2008, 09:39 PM   #4
Dewitt88
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Re: Blazer dash vents blow no air
Yes...There are 3 relays there. They are all the same.
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Old 05-29-2008, 11:51 AM   #5
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Re: Blazer dash vents blow no air
If the air flow is not switching always check for good engine vacuum from engine to ac controls.

Broken plastic line vacuum or tank unpluged or engine vacuum line unplugged.
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Old 05-30-2008, 09:36 PM   #6
silvers3945
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Re: Blazer dash vents blow no air
I replaced the relay, but it did not fix the problem. Still no air blowing thru dash vent.
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Old 05-31-2008, 07:57 AM   #7
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Re: Blazer dash vents blow no air
It Is Not ectrical.
It Is Vacuum Problem.
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