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Old 02-14-09, 01:20 PM
CadiJ CadiJ is offline
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Cadillac(s): Former 2009 CTS owner, back to BMW
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Join Date: Nov 2008
Location: South Florida
Age: 34
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Re: Excellent find!

Hello Everyone!

Ok I was really hoping to deliver the silver bullet fix for the vibration issues so many of us are having with our CTS's between 40 MPH and 70 MPH.

I have been trying to get GM to fix my CTS since I picked it up in late November.

The new PIP that was just released for this issue instructs the dealer to install:
F2143 Carrier Assembly (complete) Rear Differential Replace. From my paperwork the part number looks to be:
20827776

From what I was told the regional cadillac engineer and district service manager were the two people who tended to my car.

Here is what I have to report:
It is WORSE

My shudder prior to the new part install was a "slow shudder" starting at 45/50mph. After the part install the shuddeer is now a "fast shudder" starting at 35mph and continues all the way up to at least 80mph as that's the fastest I got the car up to.

I don't understand how on earth the engineers didn't feel this as I felt it within 2 minutes of leaving the dealership.

NOTE: my paperwork states, "Rear axle mount insulators developed by GM engineering to enhance customer satisfaction were installed to ensure optimal performance..."

SO there we have it, the 2008/2009 CTS platform does in fact have a design/engineering/production flaw which contributes to NVH and for me a very noticeable shudder.

Such a shame, the CTS is a beautiful design but just not the car I thought it would be (for me...)

Quote:
Originally Posted by DMill View Post
That's great, jdavis12 ... Good find!
If this IS the solution (CadiJ - Let us know ASAP), then I just may bring buying a new CTS from the back burner to the front!