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  1. #1

    Default Sounds like my suburban is about to take off

    So just in the past week my suburban has began to constantly sound like im about to take off like an airplane every time i punch the gas on the highway. At first I thought it was just a bad fan-clutch so i replaced that today and I am clueless on what is causing the loud roaring, as I still have the loud roaring even after replacing the fan clutch. Any ideas on where to look next to find what is causing the roaring? Could it possibly be something seizing up and causing extra work on the engine? I am leaving for Nebraska next week so I am trying to get this fixed so i dont have to worry about something happening while i am taking the suburban on a trip.
    K1500 5.7L Chevy Suburban
    290000+ miles
    K&N CAI
    Black Bear Performance Tune
    TCI Servo and Shift Kit
    Long Tube Ceramic Pacesetter Headers
    Custom Side Swept Dual Exhaust
    Dual 2.5in electric DMH Performance Exhaust Cutouts
    BFG A/T 285s

  2. #2
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    My burb was doing the same thing and it was the fan clutch. Hmmm.....If the transmission is slipping you might get a noise while rev'ing the engine. To eliminate fan noise I would try removing the fan off and take a short drive to see if the noise goes away. Mysterious.....
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
    93 K1500 burb (personal) 350 AT 3" Lift 250K+
    02 Honda Civic LX
    Looking for a 1990's Miata for an engine swap

  3. #3
    Legend 2ToNe04's Avatar
    Join Date
    Apr 2009
    Fresno California
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    idk if its normal, because when my fan comes on it sounds like a jet, or vacuum cleaner and theres nothing wrong..

    with efans you dont here this noise.

    2004 4.8| Custom Paint| Tint| De-badged| Shaved Tailgate| Rollpan| Smoked Tails| Color Matched| Lowered 5/8| Suede Interior| Color Matched Interior| Indash & TVs| Mids-Lows & 2 12" CVRs| 500 & 1100 Interfires| Soundeadener| Outlaw CAI| Magnaflow|
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  4. #4


    I am tempted to switch over to efans to free up some more power and reduce the strain on the engine along with the amount of noise that comes from having a mechanical fan. I was looking at the radiator yesterday and I think i fit 2 efans on the radiator. Would 1 efan be sufficient enough to cool the suburban?

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