Question about 1994 Chevrolet S-10
Check underneath you hood, on the driver's side, there is a little ball lookin thing. there should be a long skinny hose that connects to it. if it is rotted out or has a leak, your vents will not change over because they are vacuum powered. the vents switch by using the vacuum coming from that long skinny hose. check the entire hose because it splits off into many other things and runs from the little ball thing under the hood on the drivers side and runs along the firewall toward the passenger side. mine is starting to rot and i need to change it as well. any kind of little vacuum leak from that hose will either make your vents move slowly or not at all. im not a gm technician, but i did replace the head on my 2.2l 94 s10 with a Chevy tech. he noticed that those particular hoses on my truck were dry rotted and told me what they were and what it did. like i said, the hose will start at the ball looking thing under the driver's side of the hood, run down behind the plastic piece thats on top of the brake booster and run along the firewall towards the passenger side. you can just get new hose from autozone or carquest and cut it to your lengths, as long as its the same size width wise (or thickness). good luck. its really not a big deal, and its a good place to start and see if it helps.
Posted on Sep 05, 2008
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Posted on Jan 02, 2017
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