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Help what’s this noise??

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S

· Registered
2005 CTS 3.6, 2016 Malibu 1.5T
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360 Posts
#2 ·
This is very common in these cars, mine is also common especially when i have been driving for a while and the differential gets up to heat. yours is definitely louder, and the whine is higher pitched. But almost all of us experience the same with some variance in how it sounds.
 
P

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2007 cts sport pkg
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13 Posts
#3 ·
have 2007 cts. just had checked at dealer, oil change, filters, just overall. said my car was perfect. i have noticed this same little wine .um....i mean drives perfect but, gona ask about when i take back in for next checkup. i dunno.
 
N

· Registered
2005 CTS 2.8L
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18 Posts
#4 ·
pleese11 said:
have 2007 cts. just had checked at dealer, oil change, filters, just overall. said my car was perfect. i have noticed this same little wine .um....i mean drives perfect but, gona ask about when i take back in for next checkup. i dunno.
Click to expand...
Its your CENTER DRIVESHAFT SUPPORT BEARING. the sleave is loose and/or is out of grease.
It does it on lower RPMS around 2nd gear.

If the cars has miles on it you will most likely need to change it.
they run about 50 bucks EBay.
 
N

· Registered
2005 CTS 2.8L
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18 Posts
#5 ·
93vette said:
Hi,
I own 2007 CTS with 69,000 it will make this noise when I drive about 38 - 40 mph only anything under or over it find, weird while making the noise I shift in neutral and it would make no different, not sure what is wrong any help would be thankful

youtube link: http://youtu.be/wsHs5ROfI8M
Click to expand...
Its your CENTER DRIVESHAFT SUPPORT BEARING. the sleave is loose and/or is out of grease.
It does it on lower RPMS around 2nd gear between 30-40mph.
It has to do with the way the shaft spins at a slant at that velocity. Once it picks up speed the shaft straightens out and squealing goes away.
 
N

· Registered
2005 CTS 2.8L
Joined
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18 Posts
#7 ·
93vette said:
CENTER DRIVESHAFT SUPPORT BEARING does it have a grease fitting on it to grease? have any pictures of it so i know what to look for?
Click to expand...
There is no grease fitting.
It is on the drive shaft - right at the center.

I've attached the drawing for the shaft.

You will need to remove the shaft and remove the center bearing, install a new one and pack with grease inside the slinger.
To do this you will need to remove the exhaust pipes and muffler to get to the shaft.

Or .... you can get a shop to do it for a couple of hundred.

View attachment 2-19-2015 10-05-17 AM.pdf
 
D

· Registered
2006 3.6L CTS, Hotchkis Sway Bars, FE2
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526 Posts
#10 ·
It's also important to remember that you absolutely need a torque wrench so you can torque all the bolts down to correct specification. If you dont even have a torque wrench or know what it is or how to use one then this job is definitely not for you. Thankfully most dealerships wont charge you much for work like that because the components are easy to get to. I got all the rubber components in my driveshaft replaced for $300 in labor. I spent about $200 in parts. so $500+some change.
 
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mattt0305
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