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2003
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CTS V6-3.2L VIN N
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OnStar(R) - Upgrading to Digital Capable System
OnStar(R) - Upgrading to Digital Capable System
This TSB number 05-08-46-006H, dated 11/01/06 has been superceded by TSB number 05-08-46-006R , dated 05/16/12