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10 bolt Front Problem 1990 Sub V2500

Discussion in 'Differential & Driveline' started by Bright Idea, Sep 22, 2019.

  1. Bright Idea

    Bright Idea Junior Member

    Posts:
    16
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    0
    Joined:
    Jun 9, 2019
    Location:
    Scappoos, OR
    First Name:
    Mike
    Truck Year:
    1990
    Truck Model:
    V 2500 Suburbans
    Engine Size:
    5.7
    I have a 1990 V2500 Suburban. It has the 10 bolt GM front axle and I am led to believe that it would have the 30 spline inner shaft ? Is this correct ? It is 4:10 gear Ratio. I have a random intermittent popping sound/clunk when running in 4wd. I believe I have narrowed it down to the right ( passenger side ) It only does this in 4wd with both manual hubs locked. with the right hub unlocked and the transfer case in gear either 4hi or 4lo the noise /popping does not happen. I have had the manual hub apart and it is fine and works as it should. I suspect either something with the axle shaft or internal in the differential. This clunk/bang occurs very randomly and does not involve turning. Any Ideas before I tear into it ?
     
  2. dvdswan

    dvdswan Full Access Member

    Posts:
    1,076
    Likes Received:
    537
    Joined:
    Mar 11, 2014
    Location:
    Port Orchard, WA
    First Name:
    Dave
    Truck Year:
    1978
    Truck Model:
    K10
    Engine Size:
    350
    Steering knuckle u-joint?
     
  3. Bright Idea

    Bright Idea Junior Member

    Posts:
    16
    Likes Received:
    0
    Joined:
    Jun 9, 2019
    Location:
    Scappoos, OR
    First Name:
    Mike
    Truck Year:
    1990
    Truck Model:
    V 2500 Suburbans
    Engine Size:
    5.7
    I am not real familiar with 2 piece axle u joint failure.With the limited access it is hard to tell if there is any slop in the joint. Possibly this is the beginning of the u joint failing ? Turning does not seem to make any difference ?
     
  4. TubeTruck

    TubeTruck Full Access Member

    Posts:
    126
    Likes Received:
    98
    Joined:
    Sep 4, 2019
    Location:
    Northern IL
    First Name:
    Denis
    Truck Year:
    1978, 1975
    Truck Model:
    Suburban K10, GMC K15
    Engine Size:
    350ci
    Go from behind the front axle and grab the drive shaft an twist it back and forth. See if there is any play in the u-joint. You can also use a big screwdriver or prybar to see if there is any play.

    You should see this
    Image39.jpg
     

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