Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

Replacement Front Axel Assys (GM8240 or GM8400?)

Old Aug 8, 2022 | 11:53 AM
  #1  
Chubs's Avatar
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Default Replacement Front Axel Assys (GM8240 or GM8400?)

I've got a torn CV boot on my 2009 Alpha and its cheaper to replace the whole axle assembly rather than just the boot. I see listings for two part numbers and can't find any info on the differences.

GM8240 or GM8400

Anyone know the difference?
 
Old Aug 8, 2022 | 02:02 PM
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Go to RockAuto and use their drill down list. ACDelco, skip the other brands, you will thank me later. You want the revised version that was used on all 2009+ H3s, which RA has.

ACDELCO 15886012
 
Old Aug 8, 2022 | 05:06 PM
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Originally Posted by Doc Olds
Go to RockAuto and use their drill down list. ACDelco, skip the other brands, you will thank me later. You want the revised version that was used on all 2009+ H3s, which RA has.

ACDELCO 15886012
Thanks. Any idea what the difference is vetween the 2 PNs? I'm betting one is the "revised version".
 
Old Aug 8, 2022 | 05:33 PM
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Originally Posted by Chubs
Thanks. Any idea what the difference is vetween the 2 PNs? I'm betting one is the "revised version".
About 1/4". I still have the OEM cv axles on my '07, still in perfect shape, yet I never cranked my tbars.


 
Old Aug 9, 2022 | 04:51 PM
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Where did these two P/N's come from? Hummerz, where did you find those specs?
 
Old Aug 9, 2022 | 07:58 PM
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Originally Posted by Justinh
Where did these two P/N's come from? Hummerz, where did you find those specs?

When I need to replace mine, I'm going with:


 
Old Aug 10, 2022 | 04:27 PM
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Do you have the link to Google? Ha! I don't use Google, and my search engine didn't show much for those GMxxx #s.
 
Old Aug 10, 2022 | 05:24 PM
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Originally Posted by Justinh
Do you have the link to Google? Ha! I don't use Google, and my search engine didn't show much for those GMxxx #s.

Google

https://www.google.com
 
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