1.) While waiting for my truck to be serviced at the dealership, I noticed some 07 tahoes, suburbans, and avalanches didn't have radio antennas, nor did they have (visible) windshield antennas, so what I'm wondering is, are those radios routed through the top mounted antenna (the onstar or xm antennaI believe) and if so, is there a way to route my existing radio through that top mounted one so I can remove theantennaat thetop of the hood?

2.) In my 04 silverado (reg cab WT) the power windows had an express down feature, and now in the 07 NBS (reg cab WT)I only have passenger express down, is there a way to convert the driver side to express down? I know the crew cab has driver side express down, and uses a different module, but couldI be able to hook up a crew cab window module to only my 2 windows and have it function normally?

 

The Tahoe/Suburban's AM/FM radio antenna is embedded in the far rear pax side glass.

Your 2007 GMT900 1500 W/T should have Express Down Feature on the Driver Window only.
The only 2007 NBS Silverado's that have the Passenger Side Express Down feature are the LT2 package with RPO DL3 or the LTZ package trucks.
You cannot reprogram your truck to have this as the module programming is VIN specific.

 

Yeah, the driver's side, my bad, man that sucks, thanks for the info