http://www.chevytruckshq.com/what-is-causing-my-1995-chevy-trucks-vents-not-to-open-correctly/ Fri, 18 Dec 2009 10:20:15 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.chevytruckshq.com/what-is-causing-my-1995-chevy-trucks-vents-not-to-open-correctly/comment-page-1/#comment-349 who Tue, 30 Sep 2008 00:35:59 +0000 http://www.chevytruckshq.com/what-is-causing-my-1995-chevy-trucks-vents-not-to-open-correctly/#comment-349 Take the heater controll out and you find four vacuum lines that hook up to the vent controller(Replace them) Take the heater controll out and you find four vacuum lines that hook up to the vent controller(Replace them)

]]> http://www.chevytruckshq.com/what-is-causing-my-1995-chevy-trucks-vents-not-to-open-correctly/comment-page-1/#comment-348 paul h Sat, 27 Sep 2008 08:06:24 +0000 http://www.chevytruckshq.com/what-is-causing-my-1995-chevy-trucks-vents-not-to-open-correctly/#comment-348 Vacuum leak, bad master control switch for heat,defrost,vent, etc.. or the blend door or it's actuator is bad. Vacuum leak is usually pronounced by a constant hissing noise in the dash or under the hood...do any modes work if you switch from one to the other? A cracked or broken vacuum line under the hood or vacuum storage ball that's leaking will not allow the heater controls to work properly. Vacuum leak, bad master control switch for heat,defrost,vent, etc.. or the blend door or it’s actuator is bad. Vacuum leak is usually pronounced by a constant hissing noise in the dash or under the hood…do any modes work if you switch from one to the other? A cracked or broken vacuum line under the hood or vacuum storage ball that’s leaking will not allow the heater controls to work properly.

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