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Won't blow through vents when A/C is on.

Tiny
BIGTA400
  • MEMBER
  • CHEVROLET SILVERADO
I have a 1995 Chevy Silverado K1500 4WD, 274000 km, 5.7 litre engine and 4L60E trans. My blower blows air through all the correct settings until the a/c and/or recirc is turned on. When this happens it will not blow through the vents. Does anyone have any ideas as to what is ahppening and how to correct this.
Thanks
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Monday, June 11th, 2007 AT 12:35 AM

2 Replies

Tiny
SC1 RACING
  • MECHANIC
  • 117 POSTS
I have the exact same truck and the exact same problem. I will let you know tomorow when I get a chance to fix it. But today I covered defrost vents with a towel. LOL
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Wednesday, June 27th, 2007 AT 10:30 PM
Tiny
GBGTEXAS
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  • 46 POSTS
Sounds like you could have a broken vacuum line. Under the hood, trace any vacuum lines coming from the firewall area.
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Wednesday, July 4th, 2007 AT 6:31 AM

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