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Sharp snap sound when changing direction in 4wd

Discussion in 'Chevy Trucks' started by Chrisxl64, Jan 23, 2012.

  1. Chrisxl64

    Chrisxl64 Senior Member
    from CT
    Messages: 574

    2000 k3500 SRW ,,, only happens in 4wd when starting to move after going forward to reverse or vice versa

    Any ideas?
  2. leigh

    leigh 2000 Club Member
    from CT
    Messages: 2,342

    U-joints? Locking hubs maybe.
  3. Chrisxl64

    Chrisxl64 Senior Member
    from CT
    Messages: 574

    All u joints are brand new, no real play in CV's no wheel play as far as a collapsed bearing running out of ideas.
  4. jb1390

    jb1390 Senior Member
    Messages: 710

    I bet it is slipping where the cv axle bolts to the drive axle. Make sure all 6 bolts are very tight.
  5. Snowzilla

    Snowzilla Senior Member
    from Iowa
    Messages: 397

    I just had some clanging in 4wd on a k1500. The 4 bolts that connect the flange of the front drive shaft to the transfer case where loose. Best thing to check for slop is to put transfer case in neutral (block wheel or use emergency brake if on slope) and grab the shaft & wiggle back n forth and see if you can find any play.
  6. Chrisxl64

    Chrisxl64 Senior Member
    from CT
    Messages: 574

    Maybe I'll just change the CV shafts anyhow remains are only 160 for the pair b and B will chime in to the rescue.
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 11,391

    Inner cv joints. Outters only make noise while turning

    OMGWTFBBQ Member
    Messages: 44

  9. michdeere

    michdeere Member
    Messages: 87

    If the u-joints are all new, check your ball joints. I just replaced all 4 of them in my Ram. I had the same symptoms you have...
  10. Greenmtboy

    Greenmtboy Senior Member
    from Vermont
    Messages: 373

    Yes! After getting that fixed all the funny noises in the front went away.