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Old 01-25-2011, 04:38 PM
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94 GMC Yukon Tools

I have a 94 GMC Yukon 4-wheel drive. The front differential has a seal leaking. It's going to be quite a job as I have to split the differential case. In reading the "How To" book, it says I will need some "Special" tools to do this. The book doesn't say what tools though. Anyone know what tools they're talking about?

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Old 01-30-2011, 11:10 AM
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I would go talk to a trans shop and see what they will tell you for what "special" tools you need. Maybe just take the case into them and see what they would charge you to replace the seal. I have no idea what is in the front case but I would almost be scared of parts flying everywhere when I took it apart. Figure out the model of the case and look around online a bit and maybe you can find an exploded parts diagram of it so you can see what is all in there and maybe find where your "special" tools come into play.
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Old 02-02-2011, 12:15 PM
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What seal is leaking? No seals I can remember that you need to split the case to change.... One seal on the d/s output shaft, one gasket (RTV) @ the rh extension tube, one seal @ the p/s output shaft, and a pinion seal. The only one that is a bit of a pita is the gasket at the extension tube, as the tube has the rh mounting bracket on it. If you pull it, make sure the 4x4 shift actuator, plunger, spring and washer all get back into place properly before you re-install the rh axle, or your 4x4 will not work.
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