Rear differential fill plug?

Myfirstz71 said:

2011 Z71, 5.3
Been reading about front and rear differential fluid changes. Bought the truck with 150k and feel this is a necessary step moving forward.

Been under the truck and only plug I see is attached to the diff cover? But it’s below the center line of cover. Is that the full plug. Just doesn’t seem like it would allow enough fluid.

Any feedback would be appreciated.
Thanks

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gooffeyguy said:

Yes, that's the fill plug. No drain plug on the OE cover. You have to loosen/remove cover to drain.

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wjburken said:

Here’s a good video of the process.

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Myfirstz71 said:

I don’t know who recommended it, or which thread it was in but the tip about “check to make sure you can get the fill plug off” huge. Went to do the front diff and guess what, fill plug is “tight”. Tried penetrating oil, beaker bar, pneumatic tools, and nothing worked.

No biggie, at least I’m not rolling empty.

Click to expand...

Myfirstz71 said:

I don’t know who recommended it, or which thread it was in but the tip about “check to make sure you can get the fill plug off” huge. Went to do the front diff and guess what, fill plug is “tight”. Tried penetrating oil, beaker bar, pneumatic tools, and nothing worked.

No biggie, at least I’m not rolling empty.

Click to expand...