I have a 2007 LT On star, Pioneer speakers, steering wheel controls. Just bought a pioneer appradio 3 and im trying to figure out witch harness would work best for me. Im not really worried about the OnStar that much but everything else id like to work the same as it does with the factory. Any suggestions would be greatly appreciated

 

Which* maybe try searching again using correct wording and terminology. May return more accurate results.

 

I would suggest finding a competent and friendly auto stereo/sound shop and see what they recommend. I installed a Pioneer X950BH head unit in my 2007 LT2 and needed a "LAN adapter", an antenna adapter plug, a "steering wheel control/onstar adapter" and a backup camera. The first adapter was not a plug and play unit as I had to cut and solder to the factory wires. The shop owner said he used that type as the ones that had plugs on both adapter ends tended to work loose due to the plug being made of nylon or something? The second adapter allowed the controls on the steering wheel to work like the stock unit and it had to also be soldered. His reasoning made sense to me and the new unit is great now for two years!

Here is a great site for Pioneer units and it covers things like over riding video while driving, etc, etc. AVIC411.com