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Discussion Starter · #1 ·
I'm just about to purchase an '08 1LT extended cab silverado and I was wondering how easy it is to install the in-dash touch screen nav, rather than ordering it in the package. Also without the rear entertainment system, will either of the 2 systems GM offers work? Or do you need to rear entertainment system for the in-dash unit to function?

Thanks y'all
 

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do you plan on buying a factory one and installing it? or an aftermarket one? If after market the installation is about a mid grade hardness. Just finding where the VSS wires and reverse wire goes is the main difficulty, all the rest are pretty basic.
 

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Discussion Starter · #3 ·
I ended up getting a factory one... but for some reason the XM functionality isn't there, do I need to bring it into the dealer and have them flash it for this?
 
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