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Rear end questions?Problem solved!!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by crashfirepm53, Jul 19, 2004.

  1. crashfirepm53

    crashfirepm53 Registered Member

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    I bought my burb 6 months ago and had all the fluids changed.My mechanic took care of the axle lube and said that it looked good inside and the gears appeared fairly new. and now i noticed today that when I turn the truck and then straigthen out the wheels and acellerate the rear end feels like it is a true locker with one side of the axle hopping.After getting straight it hops a few times and then is fine.whats going on?
     
  2. smprider112

    smprider112 1/2 ton status

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    Re: Rear end questions?

    open up the cover it may be a locker /forums/images/graemlins/thumb.gif
     
  3. crashfirepm53

    crashfirepm53 Registered Member

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    Re: Rear end questions?

    Question is why did it never do this before?
     
  4. Muddytazz

    Muddytazz 1 ton status

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    Re: Rear end questions?

    Why not just ask the guy that did the lubing if he remembers if there was a locker or open carrier.
     
  5. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Re: Rear end questions?

    [ QUOTE ]
    Question is why did it never do this before?

    [/ QUOTE ]

    I bet its a axle with a G80 code , and your Gov-Loc is going to die soon . Mine worked good wheeling , real good , was like an open on the street . About a month before it died it started acting like a locker or a spool around some corners . I would pull the cover and expect it while it still only costs the fluid and a gasket with some sealer . Mine thankfully got wedged together and held in the c-clips so I didn't lose my axles /forums/images/graemlins/k5.gif
     
  6. crashfirepm53

    crashfirepm53 Registered Member

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    Re: Rear end questions?

    I'll check it out.What am I talking about for repair or parts needed?
     
  7. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Re: Rear end questions?

    If it is some kind of clutch type posi it needs an additive as well as gear oil. Sometimes the rated gear oil for posi-traction isn't enough.
     
  8. jjlaughner

    jjlaughner 3/4 ton status

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    Re: Rear end questions?

    [ QUOTE ]
    Question is why did it never do this before?

    [/ QUOTE ]

    yep what everyone else said... its probley and LSD and when he changed the fluids he probley didn't add int he $8 bottle of GM Limited slip lube that you can only get from the dealer... I put some in with my auburn and whala... no more noise /forums/images/graemlins/cool.gif
     
  9. crashfirepm53

    crashfirepm53 Registered Member

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    Re: Rear end questions?

    I asked my mechanic that did the fluid swap and he confermed he did put in the slip fluid.You can buy a OEM pcec product at Advance auto parts.He referred me to his buddy that spec. in rear ends and he said to add a little more fluid in and take it to the pavement and just do a bunch of hard circles in case the clutchs were locked up.Other than that it is prob. the Gov-loc.Well I did circles till I puked.No luck.Then I decided to do some really hard circles and punch the throttle to where the high side spins but the low side cannot due to the pressure on it.Sure enough after 3 times of this with the tire squealing, It broke free and is once again smooth as a babies butt!!
     
  10. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Re: Rear end questions?

    Just be prepared , if it is a Gov Loc , even if you think it will last on you ( like I thought ) , it WILL break when you least expect it . Mine let go the day I closed on my house /forums/images/graemlins/k5.gif
     

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