2006 Cadillac CTS Whinning noise

2006 CADILLAC CTS
80,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JOSEPH570H
  • MEMBER
  • 1 POST
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.
Jan 19, 2009 at 2:36 PM
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MERLIN2021
  • CAR REPAIR CONTRIBUTOR
  • 17,250 POSTS
possibly a worn serpentine belt and tensioer pulley...
Jan 19, 2009 at 2:39 PM
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FACTORYJACK
  • CAR REPAIR CONTRIBUTOR
  • 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.
Jan 29, 2009 at 11:24 PM