Thanks for the link DarthKarl. Everyone should know that this Onstar Diagnostic Service is at no additional cost to Onstar subscribers.
(Monster Garage Narrators Voice: FREEBIES!!) 
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Victory Red, Auto,Lux, Cashm w/ eb interior, tow pkg, BFG all terr 285/75/16 incl. spare, black side step bars, SMA chrome hood handles, Kenwood DVD, K&N Air Intake, McCulloch 8000K H.I.D. headlights, Custom made 100% sheepskin seat covers, Dual DVD headrests,SMA dual exhaust,Roof marker lights.
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