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I am installing a new overhead LCD and DVD system in my 2007 Tahoe. The manual indicates that there are two kinds of dome light circuits (Positive switched and Negative switched). I have to set the polarity switch on the unit when I install it, but I don't know what the setting should be for...

I want to run a connection from my front stereo head unit to the overhead DVD system. My overhead unit is an aftermarket installation and I took it down the other day to see what connections were already there. A small square was cut out of the headliner (I assume where the dome light use to...

Is there anything in the VIN code that confirms which type of LT package was factory installed? My new Tahoe is suppose to be an LT3 and it definitely has all of the upgrade options, but I know that the Nav and Rear entertainment system were aftermarket add-ons by the dealership and I was...

Where is the factory XM tuner located in an O7 Tahoe? I plan to use the OEM XM antenna for my Sirius radio and I need to know how long of a cable is needed to conenct the XM antenna to the head unit (I already have the adapter). I have read that the tuner is located behind the glovebox in some...

I have a Sirius ready aftermarket Eclipse Navigation receiver in my 07 Tahoe and I would like to use the factory XM antenna with the Sirius tuner instead of installing a second antenna on the vehicle. I have found several posts on the web where people have used their factory antennas by using...

I just purchased a used 2007 Tahoe this week with the Nav and DVD entertainment system. I have Sirius in my current vehicle and want to transfer the service to the new Tahoe. The Tahoe is at the dealership getting any outstanding TSB's taken care of, so I can't go outside and check right...