Here you... here is a write-up I did on the headunit install in my friend Gerald's C6...

Here we go. This install was done last weekend ... In Murfreesboro, TN. on CF member, Gabel1's new C6 Corvette Coupe. I showed you guys a sneak peek of the finished product earlier in this post ... and now here is the full write-up on the install (which is different from the 2005 models, by the way... )
It is a 1SA package, NON-BOSE, with the paddle shifters. As I am sure many of you know, to incorporate paddle shifters into the 2006 Vettes, an all-new transmission was required. Well, also different is the ECM, or Engine Control Module. The first picture shows the new ECM, which is located under the battery, in the front passenger fender, accessible from the front wheel well area. The pin-out is different from the 2005 models, and plugs were changed from 3 different colored plugs to 2 of the same colored plugs. You will find, of course, the VSS wire here for your Navigation setup... in the black plug. Which one? We will move to that step later... first things first...
http://www.myvettepage.com/file/pic/gallery/193.jpg
Ok, let's start with taking the radio bezel dash area off first. Here is what the OEM radio looks like...
http://www.myvettepage.com/file/pic/gallery/194.jpg
now it is time for a big change!! :)

First you flip up the center console lid (on verts, you need to remove the waterfall first), and remove the 4 T15 Torx screws holding the lid on.
http://www.myvettepage.com/file/pic/gallery/195.jpg
http://www.myvettepage.com/file/pic/gallery/196.jpg
http://www.myvettepage.com/file/pic/gallery/197.jpg

Next, remove the plate covering the suspension ride control plug by gently prying up and back on the plate, and then you will reveal 2 7mm bolts that need to be removed. Remove them, and DO NOT try to remove the center console yet!! It does not come out yet, and forcing it to do so may break it!!
http://www.myvettepage.com/file/pic/gallery/198.jpg

Now, you must remove the passenger side edging of the dash/center console/radio bezel. To do this, you must left up on the emergency brake boot by pulling up gently from the bottom edge of it. It doesn't come off totally, but getting access to the 2 7mm bolts underneath is the key. Remove the 2 7 mm bolts, but do not yank on the console just yet...
http://www.myvettepage.com/file/pic/gallery/199.jpg
http://www.myvettepage.com/file/pic/gallery/200.jpg
http://www.myvettepage.com/file/pic/gallery/201.jpg
http://www.myvettepage.com/file/pic/gallery/203.jpg
http://www.myvettepage.com/file/pic/gallery/202.jpg

Once you have them removed, you will notice in the next few pics how the 7mm bolts keep the side bezel piece intact when removing the center console area.
http://www.myvettepage.com/file/pic/gallery/204.jpg
http://www.myvettepage.com/file/pic/gallery/205.jpg
http://www.myvettepage.com/file/pic/gallery/206.jpg

Seems to me, on the 2005 models, the side piece of the bezel didn't have to be totally removed when removing the radio, but in this 2006 with the new transmission and different shifter, I believed they changed some things... it doesn't come loose unless the side piece is removed first. Anyhow, the 7 mm bolts hold both the center console, and the side piece to the center trans tunnel area. Then there are 2 clips retaining the side piece to the underside of the dash, next to the glovebox door on the passenger side of the radio bezel. With the 7 mm bolts removed from under the emergency brake boot, you can then move the side piece back towards the rear of the car, and release the forward clips from the dash.

http://www.myvettepage.com/file/pic/gallery/207.jpg

Next, we gently pull on the dash/radio bezel to release the clips holding it in place.

http://www.myvettepage.com/file/pic/gallery/208.jpg

Be sure to unplug the following plugs as you are removing the dash bezel:
Here....
http://www.myvettepage.com/file/pic/gallery/209.jpg

Here....
http://www.myvettepage.com/file/pic/gallery/210.jpg

(continued in the next post... )