OK Guys here's how it's done, should work on 01 - 05 non bose:
1. Remove trim section below glove box.
2. Remove 8 screws from glove box with #15 torx. 4 face, 2 rear, 2 upper.
3. Slide out glove box partially - unhook Valet bypass switch and remove glove box light.
5. Remove glove box. - GM has thoughtfully installed the connector for you mounted it to the rear of the glove box. It will free itself as you pull the glove box out.
6. With a box cutter or similar remove the molded filler section from rear of glove box. (I used a emory board to file down any excess edges)
7. Install cd changer rear mounting bracket to glove box using the pre-drilled holes. The bracket will only line up one way.
8. Install glove box fishing the cd changer pigtail through the new opening hook up the valet switch and light as you go, leave the 2 upper screws out.
9. Now the hard part - Plug cd changer in, it's tough to get but it can be done! whirring and clicking sound is good, mount with the 2 upper screws.
10. Re-install lower trim.
