Hi. I installed the AVH4000 DVD 2 weeks ago. I love it! I seemed to have used some different parts than others for my 06. I used a GMCOL11 wiring harness that worked perfectly. Kept the factory amp from the monsoon and factory sub. It has lots of power, probably about 15% more than what the factory Monsoon and XM had. Here is what we did.

Replaced the factory XM unit in the passenger side of the trunk with the Pinoeer XM and added Pioneer Sirius tuner and receiver. All fit neatly behind the trunk liner very near the tail light on the passenger side. We used the factory XM antenna, ran a short tail and added the sirius antenna. From the Sirius unit we go to the other corner of the trunk to the Pioneer Bluetooth unit. The mike comes up the driver side up the door piller and discreetly next to the visor. We also ran the ipod connection, the usb connection and and av connection (for my ZenW) through the hump and have them drop down through the top inside the center console box (i dunno what else you call it). The Bluetooth audio is awesome and my cellphone connects for hands free as soon as i start the car. Last piece we added was the rearview camera. It is in a licence plate trim plate and works great. With help from here we tapped into the back up lights so it switches on when reverse is activated.

The crowning glory of this install was the ebrake bypass. Instead of putting a switch on the ebrake to limit video and some of the bt and setup functions while driving, we used the dash. Since I don't have OnStar there was a blank under neather the foglight switch in my dash. I ordered a hazzard swith from the dealership for $50 and wired it as the bypass switch. Looks great except for the curious fact that there are 2 hazzard switched in the car. I retained all my chimes and everything looks like it was meant to be that way. If you would like pictures I can post them if you can tell me how. I have them here and I will email them to anyone who may know how to post them.

John