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2005
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H2 V8-6.0L
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OnStar(R) - Dual Mode (Digital/Analog) Systems
OnStar(R) - Dual Mode (Digital/Analog) Systems
This TSB number 06-08-46-008B, dated 02/08/08 has been superceded by TSB number 06-08-46-008C , dated 09/18/08