Is there some manual that can tell me how to adjust stuff like the glove box door and the doors of the vehicle? The glove box could close a little better and so should the doors. How to?

 

You can try this but they're currently out: http://www.helminc.com/helm/Result.a...02V6VJ1WXNETB3

You might try your local library also for the Service Manual.

 

I love the HELM manuals, I purchase them for every vehicle I have owend. The are accurate and detailed to your vehicle and are not generalized like Haneys or Chilton's.
If you plan on keeping a vehicle for more then 6 years buy the factory manuals, they tell you how to do everything, every spec, how to disassemble and reassemble wiring diagrams, pin out of connectors... The set for the 2007 Tahoe will set you back about $135 plus shipping and handling. It covers the Tahoe, suburban, Escalade Avalanche all engines, and trannys. Don't wait unitl you need it thou as they only keep them on hand for a particluar year model for a year or two.

They also sell it on CD but they charge a premium for it $400...