Strange clunking noise......

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by SprinklerGuy, Jan 9, 2003.

  1. SprinklerGuy

    SprinklerGuy Registered Member

    Aug 20, 2002
    Likes Received:
    Woodland Park, Colorado
    Well I have heard the very first strange noise ever in my Burb....

    When I am going slow (like through a drive thru or parking) but only when turning left, I hear a strange clunking sound in what sounds like the front drive axle. But I cannot be sure because I have been alone both times and it is tough to recreate the sound with my sm465 by myself!

    It has done it twice, once I think the hubs were in the locked position because the snow was falling and then again yesterday (about 2 weeks after the first time) when the hubs had just been unlocked.

    When you are turning left going slow the truck kinda hops and clunks at the same time! It seemed to do it right after some slippage on ice. The rear wheels slipped a little and then it started. I do have posi rear end.

    What could this be? Thanks in advance and if I need to get more info, please ask.
  2. imiceman44

    imiceman44 1 ton status Premium Member

    Aug 5, 2002
    Likes Received:
    Sacramento, CA
    I would say most probably the axle Ujoints.
    They could be either frozen or sloppy. /forums/images/graemlins/thumb.gif
  3. johnny reb

    johnny reb 1/2 ton status

    Mar 6, 2000
    Likes Received:
    Pittsburgh, PA
    Do you have auto or manual hubs? Before I installed manual hubs on my blazer sometimes the auto hubs wouldn't fully unlock. When this would happen I'd get a very noticable hard clunking noise.

    Also, I had my rear differential explode. Similar to your problem when turning, my rear wheels would hop when making sharp turns. You could pull off your diff cover to see if any of the gear teeth are broken.
  4. unsane

    unsane Guest

    My 89Jimmy does this alot. Escpecialy when turning left while going over a small bump or hill. I still cannot figure out what it is. At first I thought it was the fan clicking on the shroud when the body would flex. I dont think that is the problem though. It's def from the left front area though. I think it may be a jaccked spring or a trashed shock, too cold to find out right now though. Let me know what you find, and I will do the same.

Share This Page