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Strange behavior with my locking rear on the '99 K1500

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by jn1965, Jun 28, 2010.

  1. jn1965

    jn1965 Member

    I was driving on the road in town when my rear locker well locked! All of a sudden I could not make a turn without scrubbing the inside tire! It did not matter which side was inside left or right. I stopped the truck for a few minutes and when I moved it again the diff was unlocked and worked fine.

    On the '99 locker, what causes it to lock? I thought it only did that in 4-Lo...

    Anybody have an idea as to why this happened and how to prevent it from happening again?

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