Rear Diff. replaced.......... - Pontiac GTO Forum
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post #1 of 17 (permalink) Old 01-25-2006, 01:19 PM Thread Starter
 
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Rear Diff. replaced..........

I can add my name to the distinguished list of GTO owners that have had their rear diff replaced under warranty. Although I can still hear a faint whine, it's tolerable. If whine persists and gets to the point where it was before the change, I guess they'll be doin' it again.
PS....
Labor hours shown on the work order from dealership showed 2.2 hrs. They had car 2 days.....
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post #2 of 17 (permalink) Old 01-25-2006, 01:42 PM
 
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what's the cause of these failures?
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post #3 of 17 (permalink) Old 01-25-2006, 02:01 PM Thread Starter
 
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Originally Posted by HotRodGuy
what's the cause of these failures?
From what I gather its a pinion problem. Maybe the company setting up the rear gears isnt doing it properly.
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post #4 of 17 (permalink) Old 01-25-2006, 02:04 PM
 
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thanks for the info
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post #5 of 17 (permalink) Old 01-25-2006, 03:46 PM
 
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Originally Posted by johnebgoode
I can add my name to the distinguished list of GTO owners that have had their rear diff replaced under warranty. Although I can still hear a faint whine, it's tolerable. If whine persists and gets to the point where it was before the change, I guess they'll be doin' it again.
PS....
Labor hours shown on the work order from dealership showed 2.2 hrs. They had car 2 days.....
Good Luck... What was your wait time and did the service people indicate a break-in procedure ? My second lasted for 2500miles then the whine was back louder than a 30 on radio(CD) at 35-50 and 80-85 . I await the third LSD, so far 40 days waiting...
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post #6 of 17 (permalink) Old 01-25-2006, 03:49 PM
 
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Originally Posted by johnebgoode
From what I gather its a pinion problem. Maybe the company setting up the rear gears isnt doing it properly.

yup.... they are not set right and it causes vibration, aka whine. It is bad JuJu and the most common problem with out goats.

We have had to replace 7 of them out of 300(give or take) cars. So we are not that bad.

One we had to do twice, because the new one did it also.



BTW Johne - I thought you upgraded. I have mine on order right now. should be here next week. That and the axle should shore up the back end of the car. Now I only need a good cam and some quiet(going for the sleeper look) headers.
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post #7 of 17 (permalink) Old 01-25-2006, 04:06 PM Thread Starter
 
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Originally Posted by dealernut

BTW Johne - I thought you upgraded. I have mine on order right now. should be here next week. That and the axle should shore up the back end of the car. Now I only need a good cam and some quiet(going for the sleeper look) headers.
I didn't upgrade the diff, only the rear subframe bushings. I too am an advocate of the sleeper look and sound. Makes the competition scratch their head when they get their a$$ handed to them......
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post #8 of 17 (permalink) Old 01-25-2006, 04:12 PM
 
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yeah man. i will be posting all my changes very soon. Trying to negotiate a couple more things before I go public. I am hoping for a consistent 12 second car that can autox as well
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post #9 of 17 (permalink) Old 01-25-2006, 04:17 PM
 
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Nut, definately keep us updated, that right there is my ultimate goal, Suspension will be the first thing I piece out. Need to make this ****er handle so I can keep up w/ the porsches I go out on weekend drives w/
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post #10 of 17 (permalink) Old 01-25-2006, 04:18 PM Thread Starter
 
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Originally Posted by dealernut
yeah man. i will be posting all my changes very soon. Trying to negotiate a couple more things before I go public. I am hoping for a consistent 12 second car that can autox as well
Let us all know how ya do............we're all curious!!
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