GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

Loud Clicking From Drivetrain

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Old Feb 3, 2008 | 09:35 PM
  #11  
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Originally Posted by xlcooplx
hrmm...isnt the G80 clicking is it?
Not likley...what inside of a G80 can make this sound?
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Old Feb 3, 2008 | 10:15 PM
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what brand u-joint / part number should you upgrade to thats better than stockers?
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Old Feb 3, 2008 | 10:20 PM
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Originally Posted by fastrt
what brand u-joint / part number should you upgrade to thats better than stockers?
What is wrong with the OEM u-joints?
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Old Feb 3, 2008 | 10:31 PM
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sounds like they are weak, and wont take high rpms and speed
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Old Feb 3, 2008 | 10:42 PM
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I want to see proof that they will not take rpm’s of 6,500 and speeds of 130 mph. (Street use no dyno runs)
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Old Feb 3, 2008 | 11:31 PM
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Originally Posted by 05GMCL33
Not likley...what inside of a G80 can make this sound?
what isnt inside of it is the question


http://youtube.com/watch?v=KbMZ9vcYVSg
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Old Feb 3, 2008 | 11:42 PM
  #17  
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Originally Posted by xlcooplx
what isnt inside of it is the question


http://youtube.com/watch?v=KbMZ9vcYVSg
The G80 uses friction disks and clutches to engage the rear axles, I don’t see how this can make the clicking sound the member is talking about.
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Old Feb 3, 2008 | 11:48 PM
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Originally Posted by 05GMCL33
The G80 uses friction disks and clutches to engage the rear axles, I don’t see how this can make the clicking sound the member is talking about.
you got me man! i dont have a clue how the gov-loc works. ive heard of others complain when their units start to wear and not work properly...some complain of a clicking noise...
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Old Feb 4, 2008 | 09:40 AM
  #19  
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Unfortunately, I have had the expereince of breaking both the G80 and u-joints.

Here is the carnage from my G80:


Aftermarket U-joints:



In my experience, the G80 did not make noise under deceleration or when re-applying the throttle. It made clunking noises when going around turns.

The u-joints made noise when letting off the gas (decelerating). The factory u-joints are not greaseable, so if they are making noise, you need to replace them. DO NOT buy greasable u joints. They are hollow in the inside and break easier than sealed. I believe factory u-joints are plenty strong and would not change them unless they were making noise.

Try greasing the slip yolk as well. Mine made a squeaking noise when it was dry.
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Old Feb 4, 2008 | 10:49 AM
  #20  
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Originally Posted by 05GMCL33
I want to see proof that they will not take rpm’s of 6,500 and speeds of 130 mph. (Street use no dyno runs)
same here.. the driveshaft usually goes first.
I'll have to ask danny what my shift points are set at, but mine sees probably 6300 or so on a daily basis. and anywhere from 105-120 about 3 to 5 times a week.
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