How to: Rebuild a GM 8.5in 10 bolt rear differential – Start to finish rear end rebuild in 7 min!

How to: Rebuild a GM 8.5in 10 bolt rear differential – Start to finish rear end rebuild in 7 min!

YouTube needed a good GM 10 bolt rebuild video that wasn’t 30 or 40 min long.. or 2 hours like some videos on here. So here ya go! I run through the process quickly with lots of detail. The hardest part of the process was not knowing fully what I was getting into. This video would have saved me time and money wasted on other videos not hitting all the key points and not knowing all the parts I would need leading to trips back and forth to the parts store. All the parts I needed are listed below. Make sure you check the RPO code inside the glove box to know what gear ratio to order. Mine is a 3.73. Drop a comment and let me know what you think or any questions you may have! Don’t forget to like and subscribe! Thanks!

Replacement Ring and Pinion
https://amzn.to/3wVDAcK

Bearing Kit
https://www.rockauto.com/en/moreinfo.php?pk=1118540&cc=1158128&pt=2224&jsn=598

Pinion Shim Kit
https://www.oreillyauto.com/detail/c/power-torque/power-torque-gm-8-5-8-6-shim-kit/ptq7/742g202/v/a/18734/automotive-truck-2006-ford-ranger?q=pinion+shims&pos=0

Carrier shim kit
https://shop.advanceautoparts.com/p/motive-gear-differential-carrier-shim-kit-gm9.5ssk/19640064-P?searchTerm=carrier+shi

Ring Gear bolts
https://www.oreillyauto.com/detail/c/power-torque/power-torque-ring-gear-bolt/ptq7/742g935/v/a/4026/automotive-truck-1995-gmc-k1500-pickup-4wd?q=ring+gear+bolt+kit&pos=1

Axle Seal
https://www.oreillyauto.com/detail/c/masterpro-bearing-seal/masterpro-wheel-seal/mpb0/4762n/v/a/4026/automotive-truck-1995-gmc-k1500-pickup-4wd?q=rear+axle+seal&pos=3

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Comments

@reymundomiranda7679 says:

Man my 99 silverado rear end is chattering and making some funny noises. Im pretty sure my axle seals are gone

@K_spawn says:

That is dead on center ! Sick

@sasharamirez2335 says:

I'm a capable amateur mechanic. What an amazing job you did to demystify the rear diff job.

@jordangreen6866 says:

Thanks Chris I have a 2011 Cadillac ESV platinum , do you happen to know if the same parts will work?

@Kevin-mn4hd says:

Anyone recommend a video I can understand what they saying?

@ridenda67camaro says:

Awesome Video! I just finished doing my 8.2 I watched this video maybe about 20x. I used an m18 that wasn't fully charged at first had to wait about an hour to crush the crush sleeve, i hope my red Loctite didn't cure during the wait. I had to kind of tap in the shims as well hoping that its enough preload on the carrier bearings.

@johnmurphy1519 says:

Banger of a video so much better than these other trash videos that have 4 part to it great job bub

@ScottClevelandmi says:

I have heard forever that rebuilding differentials are quite a fastidious process. You've definitely taken a lot of the mystery out of this.

@aidanscull5770 says:

You didn’t torque the lug nut with a torque wrench

@jeffbrown8089 says:

Amazing video man, i’m currently replacing my diff as we speak and your video helps out so much, i have one question though, how important is it to time the gears and how do you do it?

@criley2723 says:

500 degrees is definitely in steel tempering territory. Not a good idea to heat a hardened ring gear that much. Likely wont make a difference but, pendantic semantics.

@laloanzaldua4897 says:

Phuck it imma do it

@JeremysRockSchool365 says:

Thank you for this. I need to finish my rear end in my nova and its my first time.

@ironsandhammers359 says:

This is great but is it possible tjat if you have all the parts you can get it done by a shop for around 200 or 300? I cant find the time and i dont have the tools (mainly a gaige or torque gun) available to assemble the pinion set.

@ryandavis9974 says:

Thank you for making this video. I'm a marine mechanic who has rebuilt multiple lower gear units over 20 years. I've never taken on a rear-end rebuild. My 86 square body needs some attention, and I know I'm capable, and this video is perfect thank you

@jacobpierson8995 says:

I did one myself on my pickup not too long ago. The hardest part for me was getting the outer axle bearings loose and getting preload set on the pinion. Everything else is pretty straightforward. I hate having to take everything back apart though to get the pinion depth set correctly. You did a great job thumbs up.

@thomasgiddings01 says:

what were your torque specs sir? awesome vid getting ready to do my nova

@sacgrown916 says:

I was going to attempt a rebuild on my blazer, after viewing this i decided im not bout that life. Ill get it done by someone who knows. haha. But you beasted on the video. Great work!

@stanleybell2672 says:

Can you buy spider gears for this differential?

@kimseymour8896 says:

I just had to stop and say thanks ! I had no idea that the ring gear bolts where reverse thread. I was on the edge of breaking them off, but you save the day.. I am not new to wrenching on vehicles. I’ve got about 40 years under my belt, but no ring gear and pinion ever. That was a good one. Thanks God Bless you !

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