Squeaking noise while backing up.

Discussion in 'GM Powertrain' started by skhurst18, Nov 16, 2010.

  1. skhurst18

    skhurst18 New Member

    Hey everybody. Hope everything is going well. I joined last January, but have not used the sight all that much. I purchased a 1999 GMC Sierra Z71 Ext. Cab last June. So here I am starting to face a few minor issues. I replaced the rear rotors, brake pads, parking brake shoes, and front brake pads last month. I installed everything just the way it came off, with the exception of replacing the two mini clips that hold the rear rotors onto the studs. This month a squeaking noise started when I back up. Does anyone have any idea what this might be?
  2. xPosTech

    xPosTech Epic Member 5+ Years 1000 Posts

    Squeak squeak squeak? U-joint.

  3. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Same thoughts here, or else depending on the squak a cold bushing or worn etc...
  4. skhurst18

    skhurst18 New Member

    Thanks for the info. Should I grease the current joint or replace with a new one?
  5. stephan

    stephan Rockstar 4 Years 5000 Posts

    Greasing the joints is a good idea, but try & localize the noise cuz there's a good chance it is a shoe or pad dragging since it only does it backing up. A joint should squeak both foreward & backward. Have someone back it up while you stand outside & listen for which side it's on. This will cut your R&I & repair time in half :)
  6. Bigbomber

    Bigbomber Rockstar 4 Years 5000 Posts

    X2 on what stephan said,i'm thinking a shoe or pad.
  7. skhurst18

    skhurst18 New Member

    It was a bad ujoint after all. Replaced front and rear on the back drive shaft with spicers with grease fittings. Thanks for the help.

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