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Rear end noise

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by aztec777, Feb 23, 2001.

  1. aztec777

    aztec777 1/2 ton status

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    Location:
    Reno, NV
    I have a loud clunking noise in my GMC Jimmy that increases/decreases according to speed, whether in gear or not. I have parked it and will start working on it. I think it's either a wheel/axle bearing or the diff gears. Any help on what to look for? I'm comfortable with doing the work myself and have replaced wheel bearings. I'm just not sure about the ring and pinion gears. I have determined that it is a 12 bolt. Do I need any special tools? Would I be better of having someone else do it? Thanks in advance for the help.
    Steve
     
  2. HarryH3

    HarryH3 1 ton status Author

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    I've never heard bearings clunk. They usually start growling or whining when they're going bad. Do you get about 1 click per tire revolution? If so, then it sounds like a tooth broken on the ring gear. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  3. Whassup

    Whassup 1/2 ton status

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    If you haven't done it before, then get a shop to do it or have a friend who knows what he's doing help you. You'll basically need an in/lb torque wrench and your basic tools for disassembly.

    "There's NO replacement for displacement!"
     

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