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  1. #11

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    What about the water pump?

    Do you have access to an automotive stethoscope? Tap around with that and see what you come up with. WATCH THE FAN!!

    1999 Chevy K2500 Suburban 350
    K&N, reworked cai, Thrush cat-backs
    Vinyl, cranks, floor shift, and rear air!

  2. #12

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    bad altenator bearing maybe?....mine sqeaks at start up on cold mornings and will go away after it warms up...i replaced a/c belt and serpetine belts and checked the tensoiner and it checks out good!....i took the sepentine belt off and spun the altenator pulley and it squeaks so im assuming the bearing is going out or its dry in the mornings?....the other day i started it and it was so loud i thought the truck was going to blow up and after it warmed up it quit and hasnt done it since.So next week im getting a new alternator and see if that helps...My truck is a 2003 Chevy Silverado 1500 with the 4.8L
    Last edited by ChevyBoy2009; 02-27-2010 at 12:41 AM.

    2009 Chevrolet Silverado 1500 LT Z71 Crew Cab "All-Star Edition"

    Line-X'd Bed
    Line-X'd Custom Brush Guard(Heavy Duty)
    5.3L Flex Fuel
    Factory Black Running Boards
    BF Goodrich All-Terrain KO's(265/65R18)
    2" Rough Country Leveling Kit
    EGR In-Channel Vent Visors
    Exterior PLUS Package
    Interior PLUS Package
    K&N Drop-In Air Filter
    Bowtie Mud Flaps
    Cat-Back Dual Exhaust
    Black Bowties
    DeeZee Toolbox(Debadged)
    Diablo Sport Predator(AFM Disabled)
    ProFlaps
    Towing Mirrors
    Next Planned Mods
    Bigger Tires
    Aftermarket Rims

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