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  1. #1

    Question Heat/AC air volume troubles

    Thanks for reading and hopefully someone has an avenue I can persue:

    I have a 1993 Silverado recently purchased to pull my camper and I notice the air blows at less than optimal. It seems like I'm on low speed even though I can tell it's on high. Is there somewhere I can go in the heating system to look for a blockage? It's really noticable when in fefrost mode. I'm very familiar with taking apart dashes due to being a professional car stereo installer but I really do not want to take the entire dash apart if it's not necessary. Thanks in advance for any suggestions.

  2. #2
    murdog94's Avatar
    Join Date
    Feb 2008
    Cloquet, Minnesota, United States
    Blog Entries


    Pull out your heater fan.. you will not need to pull the dash to get it. it is mounted in the foot well.. The motors get old and weak and dont push as hard. I swaped mine out when it would make noise and hardly move the air and now it works great. These trucks are notorious for the HVAC fan not working properly after a time.


    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

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    "Hold it to the floor till you see God.... Then Brake!!!!"

  3. #3
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    My 93 is similar to yours. Search the forums. I have a post with pics for the fan motor replacement. And I have another post for the blower relays. When I did both I found it necessary to remove the glove box for easy access. I'm not sure your problem is the fan or blower relays. Check the wires for the relays. The circuit gets very hot and burns the leads.
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
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