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301 Posts
The rtl with no navigation and no Sirius radio still has the sharkfin on the roof. So is that also the fm antenna? Or is the base rtl wired for gps/Sirius upgrades?
Sharkfin on the roof
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That is the land-to-lake transitional fin. Just make sure your cargo is locked in the water-proof trunk, the sunroof is closed, the water is no more than 30 feet deep, and only take your truck in fresh/brackish waters. Bon Voyage!
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237 Posts
The RTL has no sunroof or sliding back rear glass. Now we know why, waterproofing!
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So the pic online of the sport model does not appear to have the sharkfin even though the 5inch info screen is the same as the base rtl
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1,781 Posts
It's for Sirius/XM
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