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Search results

  1. RENNtech

    Vacuum Pump ??

    Just to update you fellas, installing the new vacuum pump and pulley solved my problem.
  2. RENNtech

    Vacuum Pump ??

    I'm going to replace both the pump and the pulley. I don't believe it is Hummer specific maybe just what it controls is. It's located right below the alternator and runs off the serpentine belt. Exactly, I have to replace it. Driving in Florida this time of year with no a/c is no fun at...
  3. RENNtech

    Vacuum Pump ??

    It was my understanding that the vacuum pump had something to do with the blower motor for the a/c. Ever since I removed the pulley , no cold a/c and the air won't blow through the vents, only through the defrost. Called Chevy about the pulley and of course, it has been discontinued so, I...
  4. RENNtech

    Vacuum Pump ??

    Hello everyone, I am new to the forum and have been doing a lot of searches for vacuum pumps. I have a loud "ticking" sound coming from mine. When I take the belt off the noise goes away. So, I took off the vp pulley, put on a shorter belt and the noise is gone. I noticed the vp pulley...
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