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Rear differential looks wet.

Andy G

By Andy G
June 15, 2020 in 2014 - 2019 Silverado & Sierra

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Andy G

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Andy G

Posted June 15, 2020

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Posted June 15, 2020

Truck drives fine but obviously it isn’t good. Haven’t noticed any oil puddles on the floor or any big leaking. What you guys think it can be? Here’s a pic.

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catpartsman

Posted June 15, 2020

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Posted June 15, 2020

Definitely a pinion seal going out. Mine was replaced at 70,000.

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rav3

Posted June 15, 2020

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Posted June 15, 2020

You have a little leak in your differential pinion seal.

Gm Truck and SUV Pinion Seal Replacement

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Andy G

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Andy G

Posted June 15, 2020

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Posted June 15, 2020

2 minutes ago, catpartsman said:

Definitely a pinion seal going out. Mine was replaced at 70,000.

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Hopefully my extended warranty covers this. I’m currently at 78,000 miles.

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catpartsman

Posted June 15, 2020

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Posted June 15, 2020

It should. Mine did.

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BlackisBeautiful

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BlackisBeautiful

Posted June 15, 2020

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Posted June 15, 2020

Make sure the diff vent is clear of blockages, if not, that is indeed a pinion seal failure.

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