Offroad Trailblazers and Envoys

GM 7.2 IFS Front Differential

G80, GU6, GT4, GT5, WTF? This section is for gearing and driveline stuff.

by Aries » Thu Jan 09, 2014 2:39 pm

GM 7.2 IFS Oil Pan Mounted Front Differential.http://www.demandaam.com/resources/pdf/file-20130128091425.pdf
JamesDowning wrote:Are you sure the one from Randy's is the correct seal? I'll be the seal that came with it is for the S10 or something.

Yes, on the seal in the kit it reads, AAM 400050495 AIR SIDE same as the one from the GM dealer (note: old seal P/N AAM 46002025)

Knowing I was just doing a re-gear not a complete re-build I spent weeks trying to piece together a kit to save $, It got confusing trying to match up AAM P/N's with GM P/N's against Timken P/N's. So I called Randy's R&P and told them exactly what I was doing on my 02 TB. The guy said kit YK GM7.2IFS-C is what I needed and has everything (more then what's needed for a re-gear)

I can list P/N's out of the kit if someone want to piece some stuff together
Attachments
TB kit.JPG
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Last edited by Aries on Fri Jan 10, 2014 12:04 am, edited 1 time in total.
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by Trail X » Thu Jan 09, 2014 4:24 pm

That link is a nice reference for the future. Is the YK GM7.2IFS-C kit what you received? What sort of price did you pay? I've got to do a rebuild of the diff I got from a member on here that was in pretty bad condition and am considering replacing all the bearings while I'm in there.

I stickied this thread. I think it will prove to be a really good resource. Can you keep the first post updated with as much information as you can? Part numbers, etc?
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by Aries » Thu Jan 09, 2014 8:14 pm

JamesDowning wrote: Is the YK GM7.2IFS-C kit what you received? What sort of price did you pay?

Yes, got it from Summit Racing $256 http://www.summitracing.com/parts/yga-14164/overview/ shipped direct from RR&P in TN. Also in the kit are the part to rebuild the disconnect not just the diff
When I called RR&P I questioned him about the P/N's, I had some wrong that's why I went with the kit. Items in the kit are used in a lot of other differentials like the pinion shims are the same as the Dana 44 diff. I'll doc all PN's with pics.

I hope to get to the rebuild next week so I can swap out the front diff some time in February
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by Diacom » Thu Jan 09, 2014 10:02 pm

Just a quick point, the kit from Summit says it's for 2004 and up only. So please be sure to let us know if everything fits your 02 for those of us pre 04 model.
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by DustinC1989 » Thu Jan 09, 2014 10:47 pm

Look at the picture he posted
'01-'09
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by Aries » Fri Jan 10, 2014 12:11 am

Diacom wrote:Just a quick point, the kit from Summit says it's for 2004 and up only. So please be sure to let us know if everything fits your 02 for those of us pre 04 model.

Yes, and Yukon's web site states the same "04 and up" that's why I called. I went through the kit and it's right, it has everything I need.
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by DustinC1989 » Fri Jan 10, 2014 12:42 am

They should probably get some stuff straightened out...
Box says '01-09
Site says '04+
Then on the same page says '02+
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by Trail X » Fri Jan 10, 2014 10:16 am

There are no significant changes to the front diff (other than the addition of the extra exterior hole) between the years of the trailblazer that I know of. Anything that fits one year model TB should fit any other.
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by TBYODA » Tue Sep 20, 2016 9:31 pm

A member of the FB offroad trailblazer page posted this, felt it would be good here also.

tb1-page-001.jpg

tb1-page-002.jpg

tb1-page-003.jpg

tb1-page-004.jpg

tb1-page-005.jpg

tb1-page-006.jpg

tb1-page-007.jpg
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by larryk » Tue Sep 20, 2016 10:06 pm

Why the two different part numbers for the AWD sleeve (#5)? What's the difference and which should I order when converting my disconnect to AWD?
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by TBYODA » Thu Sep 22, 2016 10:20 pm

Edit: The AWD sleeve is # 12471636.

The other number is really #12 in assembly 56 part # 26036092
Last edited by TBYODA on Fri Sep 23, 2016 8:12 pm, edited 1 time in total.
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by Trail X » Fri Sep 23, 2016 2:19 pm

Good catch Rob. Thanks for posting this up!
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by larryk » Sat Sep 24, 2016 12:06 am

TBYODA wrote:Edit: The AWD sleeve is # 12471636.

The other number is really #12 in assembly 56 part # 26036092


Why, indeed it is! Weird they list these like that....but good call.

Many thanks. :cheers:
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