#ETCGDadsTruck Axle/Differential Rebuild (Part 1)

This is (Episode 5) of the #ETCGDadsTruck Series.

In this installment of the #ETCGDadsTruck series I rebuild the axle assembly and differential in my GMT400 with a 10 bolt rear end (8.5”). This includes replacing the gear set, the differential (with limited slip), axle bearings, pinion bearings, differential bearings, and all seals. It includes all the tools and torque specs you will need. I also show you how to check and set backlash and interpret a gear tooth pattern.

This video will apply to all GM 10 bolt or 8.5” differentials.

Episode 6: https://www.youtube.com/watch?v=vkSvYCqrlOI

#ETCGDadsTruck Axle/Differential Rebuild (Part 2): https://youtu.be/vkSvYCqrlOI

#ETCGDadsTruck Axle/Differential Rebuild (Full Version): https://www.ericthecarguy.com/exclusive-videos/73-exclusive-videos/2341-etcgdadstruck-axle-differential-rebuild-full-version-exclusive-video

Camera: Brian Kast, Eric Cook

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Summit Racing: https://www.summitracing.com

Thanks for watching!


GM GovLock (G80): https://www.autoevolution.com/news/a-simple-guide-to-the-g80-locking-differential-94874.html

Part Links

My Differential: https://www.summitracing.com/parts/aub-542022/overview/year/1990/make/chevrolet/model/c1500

My 3:73 Gear Set: https://www.summitracing.com/parts/sum-741001

My Differential Cover: https://www.summitracing.com/parts/sme-8510300nl

Ratech Ring and Pinion Installation Kit: https://www.summitracing.com/parts/rat-3003k

Truck Axle Bearings (WE60690)(513067): https://www.ebay.com/p/Wheel-Bearing-Rear-BCA-Bearing-WE60690/179139001?iid=311938365287&chn=ps

Axle Seals (F4762N): https://www.ebay.com/itm/Federated-F4762N-CR-16146-Oil-Seal-/172801509640


Slide Hammer with Axle Bearing Attachments: https://www.jbtoolsales.com/otc-6540-rear-axle-bearing-puller-set#oid=1002_1

Axle Bearing Puller Attachments: https://www.jbtoolsales.com/atd-tools-8621-rear-axle-bearing-puller-set#oid=1002_1

Astro Pneumatic Bushing/Seal Driver Kit: https://www.jbtoolsales.com/astro-pneumatic-7824-bearing-race-and-seal-driver-set#oid=1002_1

Dial Indicator Set (Checking Backlash): https://www.jbtoolsales.com/central-tools-3d102-dial-indicator-set-with-on-off-magnetic-base#oid=1002_1

Bleepin Jeep Pinion Tool: https://store.bleepinjeep.com/product/yoke-wrench-tool/

Shim Installation Tool: https://www.summitracing.com/parts/yga-56077?seid=srese1&cm_mmc=pla-google-_-shopping-_-srese1-_-yukon-gear-axle&gclid=CJ6Dj-DSxc0CFQgaaQodKbgFjA

Milwaukee 1/2” (the big one): https://milwaukeetool.com/Products/Power-Tools/Fastening/Impact-Wrenches/2863-22

3/8” Electric Impact: https://www.jbtoolsales.com/ingersoll-rand-w5132-k12-iqv20-3-8-drive-impactool-bl2022-kit#oid=1002_1

Trusty Cook Hammers: https://trustycook.com

1/2” Breaker Bar: https://www.jbtoolsales.com/k-tool-23081-chrome-breaker-bar-1-2-drive-24-long#oid=1002_1

Torque Wrench: http://www.rakuten.com/prod/282405511.html

Related Videos

#ETCGDadsTruck 4” Rear Suspension Drop (Part 1) (Episode 3): https://youtu.be/VNnEiIoGpwE

#ETCGDadsTruck Gets Wheels & Tires (Episode 2): https://youtu.be/0Q3A6l7gNHM

Ford 8.8 Assembly and Set Up (Short Version): https://www.youtube.com/watch?v=sf1a8i0mqCw&t=35s

How To Clean and Prep a Differential: https://www.youtube.com/watch?v=il8nDlCepyc

**Answers to your automotive questions found here: http://www.ericthecarguy.com/faq

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Stay Dirty


Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy®.


Author: Rafael


23 thoughts on “#ETCGDadsTruck Axle/Differential Rebuild (Part 1)

  1. I put together my SM465 and to get the main shaft bearings on the shaft, I had.the shaft in the cold garage and I put the bearing in a cylindrical tube and put a heat lamp on it for.30 minutes and they slide right on.

  2. Curious to know .im in the process of rebuilding my rear diff in the 2000 Silverado 1500.its a open diff.i notice the spider gears in the middle slide up and down a bit .is this normal

  3. In the factory 1997 manual it states 90 ft/lb for the ring gear bolts and 60 ft/lb for the bearing caps . At 23:16 in the video you stated 60 ft/lb for the ring gear perhaps you confused it with the caps spec. (Page 4B2-14 of manual) Great video, learned a lot just want to make you aware of a possible discrepancy. Thank you.

  4. rebuilding rear ends is more of an art form..i thought i knew what i was doing and had one blow up within 10 minutes of going down the road lol….

  5. I had the same Diff in my 05 Silverado Z71 4 x 4! At around 135,000 miles I started hearing a little moan from the rear! So That night I put it up on the lift and removed the cover, I could not believe my eyes! The differential was literally cracked all the way around, Yes it was literally two pieces! I never went off road or towed anything heavy, That diff would always lock and unlock when it was supposed to, But they are not that strong!

  6. Can I change the spider gears in there without actually taking the carrier out of the housing. Just curious. Mine ate the driver side spider gear

  7. my carrier will not turn to remove the clips that hold the axe in, but the wheel will turn with a lot of help. what can i do to fix it?

  8. Hey Eric, I’m stuck trying to get this pinion gear out. I’ve been following along every step but this pinion gear won’t budge like yours did. I upgraded to a 4lb dead blow and smacked it for a good half hour but nothing.. any suggestions?

  9. I Am having trouble getting axle to move in enough to remove c clips. have i missed something? PIN IS REMOVED

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