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Does a 1500 sierra 4x have a rear drain plug - 1994 GMC Sierra

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I assume you are talking about the rear differential. There is not a drain plug. Two ways you can change fluid - 1) Remove differential cover, let fluid drain, reseal with rtv, and tighten down. To refill there is a plug that you need to remove, fill until fluid comes out the hole. 2) Use a device to **** fluid from fill hole, then refill.

Posted on Mar 28, 2011


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Posted on Jan 02, 2017


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