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Rear Differential Fill Level Question

753 Views 15 Replies 8 Participants Last post by  canyon56
Any tricks and tips for not overfilling my 2003 Sierra 1500 Z71 rear differential fluid. The factory recommendation is to fill 5/8" to 1 5/8" below the fill hole when the oil is cold. Thanks for sharing your wisdom.
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Just fill it up to the hole, or close to. I have never seen a diff filled to the hole that caused a problem. If you are worried simply drive it, and while it is hot pull the plug and let any excess run out.
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