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2006 Cadillac CTS Whinning noise

Tiny
JOSEPH570H
  • MEMBER
  • 2006 CADILLAC CTS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
When accellerating I am hearing a high pitched whine between 30 and 40 mph and then it stops. It is not wind through a window.
Monday, January 19th, 2009 AT 2:36 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Possibly a worn serpentine belt and tensioer pulley.
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Monday, January 19th, 2009 AT 2:39 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Does it sound like it's coming from the back seat. Has it had a rear diff pinion seal replaced. Possibly low fluid in rear diff, or collateral damage from a previous low fluid condition. There was a recall issued for pinion seals, I'm not sure if 06 applies.
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Thursday, January 29th, 2009 AT 11:24 PM

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