badstang123 10+ year member
Senior VIP Member
Here is the install on my 2009 Avalanche. All components of the system are in my sig. Everything turned out extremely well. A friend and I spent about 12 straight hours on it and nearly killed ourselves but, except for the Nav unit, you'd never know there was a system in it when the seats are up. The tweets were mounted behind the stock tweeter grills and speakers in the doors are hidden of course as well. The subs are under the rear seat and amps and crossovers are all mounted on the rear mid-gate completely hidden with the seat up. Sounds awesome too. If I get the doors off again I'll get some pics of the mounting of the speakers. I made MDF cutouts with plastic bass cups behind them so each speaker has it's own sealed enclosure. Enjoy: