How to Service a GM 12 Bolt Rear Differential - Multiple Models!

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Today we are taking a look at servicing a GM 12 bolt differential. GM put these rear ends in all kinds of different cars and trucks for a very long time. This is pretty easy and something anyone could do with some jack stands and a jack. I also show the importance of using a small amount of RTV to create a leak free seal. Thank you for watching!
Differential Gasket: amzn.to/2ObOy3I
Gear Oil x3: amzn.to/2ClX51t
RTV: amzn.to/2DwlfXJ
If you have a car question ask it completely free at www.2carpros.com/questions/new
*Disclaimer: Please use all safety precautions

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21 июл 2024

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Комментарии : 18

@derekdeckens2559 2 года назад

Very good video. Clear, easy to follow and helpful experience being shared. Thank you!

@2carpros 2 года назад

You're very welcome!

@007rom3 Год назад

Probably a dumb question but I don’t put trans fluid in the dif? And should put that oil?

@STREETFIGHTER50 Год назад

I got a question. Are the widths different between all the 1968-1972 GM car 10 or 12 bolt rears?

@michaelcrossley4716 Год назад

Put a couple start bolts in before applying. It will keep the gasket from slipping around.

@robd7365 2 года назад

Nicely filmed video 👍 my Oldsmobile 12 bolt O rear does not have a full plug like your Chevy rear... It only has the nylon vent plug. What is your recommendation for fluid capacity?

@2carpros 2 года назад

Thank you! It has to have a fill plug somewhere. Look all around the front and use a screwdriver to kinda poke around. It might be caked in grease and super tough to see. Thanks for watching!

@rhodycars6058 Год назад

BOP are different than Chevy

@filibertoquevedo8119 3 года назад

Do you know what is for the upper hole?, the one with a white cap (over the filling hole).

@2carpros 3 года назад

That is a vent for the differential case. Thanks for watching!

@salvadorgutierrezr5914 4 года назад

👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍and thanks for the video🙏🙏🙏🙏🙏👋

@2carpros 4 года назад

So nice of you!

@designsinorbit 4 месяца назад

Idea for ya from a loyal subscriber- NOBODY has a step by step guide to changing a rear gear size in a GM 12 bolt. I've been on forums and a ton of people are scared to take it on. FYI :)

@2carpros 4 месяца назад

Great! Thank you so much for watching and subbing! That's a great idea and I'll put it on the list!

@designsinorbit 4 месяца назад

@@2carpros I successfully built a 496 using your big block series. Changing a rear gear would be awesome knowledge as well.

@2carpros 4 месяца назад

@@designsinorbit That is amazing and warms my heart! Thank you for telling me that! And thank you for watching! Yeah totally!