The fact that it was probably a special order may be a clue as to why it doesn't have a Satellite Radio. Maybe the person that ordered the truck deleted the option from his order. GM allows some specific standard items to be deleted on some models. The RPO code for XM Radio delete for 2011 was "U2J". It should have been the same for 2010. You might check to see if that code is on the label on the back of your glove box door.Not this truck---it's a Z85 4x4 LT ext cab with the V8 and leather option. Has the G80 locking diff, heavy duty 145 amp alternator, power options, etc. Most likely a special order truck, since Z85's with the V8 are pretty rare.