Thread: Front end rattle help

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  1. #1 Front end rattle help 
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    Need some help, rebuilt the car last year, 02 GTP, new complete strut assemblies all around, brakes, etc. Now a year later rattling on the front end it seems, checked and found sway bar cracked where it bolts to end link and broke on driver's side at the bend. New dorman sway bar and end links, still rattles. So new brake hardware except for the caliper bolts which were in good shape, new rubber boots and clips, still rattles at slow speed over bumps. Everything else is tight, have had all 4 wheels off multiple times and I'm at a loss as to what the hell is causing this.
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  2. #2 Re: Front end rattle help 
    Killa Bee Scottydoggs's Avatar
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    check the sub frame bolts.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Front end rattle help 
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    How many are there, just the 2 near the sway bar or more hidden away?
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  4. #4 Re: Front end rattle help 
    Killa Bee Scottydoggs's Avatar
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    two up front two by the rack.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: Front end rattle help 
    GTP Level Member CHI2000GTP's Avatar
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    Could be sub-frame bushings.

    Link: The Clunk is Over
    2000 GTP 4DR - Stock
    243,000 miles
    CHICAGO, IL
    My Car: http://www.grandprixforums.com/members-rides/103740-lukes-gtp.html#post1443981
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  6. #6 Re: Front end rattle help 
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    Would the sub frame bushings cause the metallic like rattle like loose calipers?
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  7. #7 Re: Front end rattle help 
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    Well all 4 sub frame bushings look to be in decent shape, no tearing or rips in the rubber and everything is tight. Guess I will have to get in trunk and have someone drive around and see if I can further pinpoint where the noise is coming from.
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  8. #8 Re: Front end rattle help 
    GrandPrix Junkie
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    Have you ever replaced the control arms and ball joints?
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  9. #9 Re: Front end rattle help 
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    Yes, last year I rebuilt with new control arms, brakes, tie rod ends, ball joints and cv joints. Car was written off and sat for a couple years until I had the time and money to get it back on the road. The only thing I have not replaced are the caliper bolts and caliper bracket bolts.
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