Tim & Klaus....Thanks so much for the info. It's a big help. Leaning towards the TNR Nav upgrade with the Escalade CD slot changer in the rear console where you installed your DVD. Also thinking about XM but haven't researched that yet. One last question. What Nav antenna application did you all end up using? Behind the dash or external and if external what part did you use? Since my CD changer just failed and the dealer says they have to remove it (just to get the p/n) then reinstall it and order the replacement then remove it again to install the new one (go figure??) I thought I'd just have them remove it and leave all apart and I'll do my upgrade myself. Then I'll sell the new head. Thank again for all the help. I really appreciate it since I'm new at this.
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Jonahs
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