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Old 05-21-2022, 01:23 PM   #1
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
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Has Anyone Changed Their Center Support Bearing on Driveshaft?

So after thinking I had something rolling around in the trunk on hard takeoff and while turning in first on the gas hearing thumping. I figure out with pretty high confidence that I've finally killed the stock flimsey center support on the Driveshaft.

It looks like once I get the drive shaft out I may have to press it out of the bearing to put the new one on? Not sure though?

It looks like GM has updated it to a new part number 84255731, so hopefully they made it stiffer and stronger. Hopefully it improves the POS sounding rattle/knocking when going from drive to reverse to neutral.
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Old 05-21-2022, 05:49 PM   #2
cjperformance

 
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Consider replacing w a one piece ds.
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Old 05-23-2022, 12:50 PM   #3
cmitchell17

 
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Quote:
Originally Posted by cjperformance View Post
Consider replacing w a one piece ds.
I would but it's hard to justify the price. I hate the clunking and noises but I would rather deal with it and keep replacing supports than spend 1500.

I haven't been able to find anyone who has bought a ZL1 driveshaft for a automatic. I think a ZL1 Driveshaft will work for a manual but not sure for an automatic. Although I guess it would still probably have the same problem, but I've never driven a ZL1 to confirm.
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Old 05-30-2022, 08:13 PM   #4
cmitchell17

 
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So I put a new one on. I had bought a brand new shop press since I figured I needed one for other things and I went to try to put the drive shaft under it and the u joint yoke was too big to fit under the hole between the steel beams in the press. So the press basically was useless for this job. I bought the 20 ton harbor freight one and it was just barely too small.

I ended up getting the bearing off with a 12 dollar jaw gear puller it wasn't on that hard of a press fit.

I tapped the new one on with a pipe.
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Old 05-30-2022, 09:22 PM   #5
Joshinator99


 
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Quote:
Originally Posted by cjperformance View Post
Consider replacing w a one piece ds.
Agreed. The factory SS driveshaft if very weak at that point where it meets the center carrier bearing. For evidence, I submit exhibit A to the court:
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Old 08-09-2022, 11:12 AM   #6
asthmamax11
 
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Yes had this replaced under warranty a few years ago
They tried to blame it on my DSS axles and replaced them with OEM also

Bastards probably sold them on ebay
Still mad about it 4 years later
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