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Old 01-03-2010, 12:38 PM   #93
zen
 
Drives: 2011 CTS CPE & 2010 2LT/RS CGM
Join Date: Jun 2009
Location: Nevada
Posts: 337
I could be wrong but I believe that the rotors on the LT's are steel and the rotors on the SS's are aluminum. The aluminum would be softer than steel and could that be the cause of the noise.
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