You should already have it. If you bought the truck used, just go to the sat. setting and take down the unit number...Call Sirius and have it activated...If you do not have this, you can add a external unit...Best Buy or someone else like that can help... If yours is not setup, I took the OEM out and put a Kenwood in...So, I have one sitting around
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7.5 3500QC 6.7CTD 68RFE Build date June 2007
Superchips tuner 3808, Boost/EGT Laser Gauge, Airaid cold intake
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