Rear diff. oil change

Discussion in 'Engine & Drivetrain' started by dslman, May 29, 2018.

  1. dslman

    dslman TYF Newbie

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    hello I'm wanting to change the oil in the rear differential of my 2005 Tahoe Z71. There is a torsion bar plus a stabilizer bar that goes across from one side to the other,,,,do these need to be removed to get the cover off? It looks to me like they would have to as there doesn't look like enough room to remove the diff cover. And if so where do I remove them at? Just asking questions so I don't have to do steps backwards.

    Thank you.
     
  2. swathdiver

    swathdiver Full Access Member

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    If you put jack stands on the frame and let the differential hang down you'll have enough clearance to work. Pull the spare too.
     
  3. corvette744

    corvette744 2004 Z-71

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    I did it without removing anything-but did put the jackstands on frame.
     
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  4. inmypassatlife

    inmypassatlife Full Access Member

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    Get a lubelocker gasket too
     
  5. NvrMnd85

    NvrMnd85 TYF Newbie

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    Anyone have experience with rusty diff cover bolts? Mine looks like they might disenigrate if i try to turn them.

    Also looks like i have a drain plug on the bottom
     
  6. MrBalll

    MrBalll Full Access Member

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    Just work it like any other rusted bolt. Put penetrating oil on it and let it sit. Wipe it down and hit it with a torch. Then slowly turn it to break it loose. If it snaps oh well; drill it out and get a new bolt.

    If you have a drain plug that would be much easier. Just use that and you're golden.
     
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  7. NvrMnd85

    NvrMnd85 TYF Newbie

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    Yea it think im gonna have to. The poor g80 doesn't like to unlock.
     
  8. Bombsquad85

    Bombsquad85 Full Access Member

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    Anyone know the size of the diff bolts?
     
  9. swathdiver

    swathdiver Full Access Member

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    Galante likes this.
  10. corvette744

    corvette744 2004 Z-71

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    I did just as that article says-pull out 1 of your top bolts.I know they looked rusty but they will come out with no heat,take it to your ace hardware and your done in 5 minutes.
     
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