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  1. #1

    Default Belt area noise.. possibly Power-steering pump going bad? HELP!

    I have a 01' Sonoma ZR2. 4.6 liter..147k miles, I replaced the serpentine belt, idler pulley, harmonic balancer, tensioner, and AC compressor that was already going out as well, with all gm parts and my belt still squeaks.. I heard from someone that GM trucks, specifically s-10s, and sonomas have a steering pump problem that causes squealing, and a high pitched moaning noise. Is this true? Because I wanna get it fixed.. lol. Please help! Thank you.
    Last edited by jhacker92; 07-21-2011 at 11:54 AM.

  2. #2

    Default

    Go to Gatesbelts.com and Dayco.com, they have videos about belt issues. One of them has a video about belt noise and not have everything (pulleys etc..) aligned. Its good info.
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

  3. #3
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    Quote Originally Posted by jhacker92 View Post
    I have a 01' Sonoma ZR2. 4.6 liter..147k miles, I replaced the serpentine belt, idler pulley, harmonic balancer, tensioner, and AC compressor that was already going out as well, with all gm parts and my belt still squeaks..
    An easy way to determine if it's the belt rather than the PS pump is to put some bar soap on it, along the edges & the ribbed & flat sides of the belt. (Careful, watch your fingers if you do this with it running) If the noise temporairly goes away, then it could be an alignment problem with the edges of the belt rubbing on the edges of one of the pulleys. If that's not it & you localize this to the PS pump, try changing the PS fluid before faulting the pump.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  4. #4

    Default

    stephan, thats a good point about changing the power steering fluid. Because I have oversize tires I change my ps fluid every year. I drain it with a good old turkey baster. I change it, then run it and drain again. Last time I changed the fluid I added a bottle of Lucas ps fix because I was getting a slight squeel out of the unit, seemed to have worked.
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

  5. #5
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    STB, I've never seen a GM schedule for changing PS fluid, (though there may be one) but I think it should be about the same as brake fluid every 2 years. That stuff gets pretty dirty & looks like it has a lot of crap circulating in it. I disconnect the return line & run it into a bucket & keep filling the resevoir till it runs clean. The turkey baster method works good too but it seemed like it was always leaving some of that crud in there.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  6. #6

    Default

    stephan, thanks for that info and I will try at next change.
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

  7. #7
    Legend
    stephan's Avatar
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    Forgot to mention, it's a good idea to have a helper standing by at the key in case the hose flops out of the drain bucket & starts spraying the garage floor ha ha ha... don't ask me how I know that
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  8. #8
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    Welcome aboard! You have some good advice already but if none of their suggestions work, turn the radio up louder.......
    86 911 Porsche Carrera
    98 K1500 Suburban LT
    2012 Nissan Leaf

    ​General Motors.
    Because life is too short to drive a Ford

  9. #9
    Legend Bigbomber's Avatar
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    Welcome!.....
    [/SIGPIC]2009 Chevy Silverado LT 1500 EXT CAB 4X4 Vortec 4.8L SFI,K&N air filter,Weathertech Floor Liners ,Weathertech Stone/Bug Deflector, Line X Spray On Bedliner, TruXport Rollup Tonneau Cover, Molded Mudguards, Viper 5701 LE 2 way Security Alarm/Remote Starter, Xm Satelite Radio,BILSTEIN 5100 rear shocks,BILSTEIN 5100 front levelling shocks,READYLIFT 2" rear lift blocks,Goodyear Wrangler Territorys -265/70R 17"

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