Used the search, but still have simple raido question

Just purchased an 05 Denali with the Bose system and headunit (no nav). I had a couple questions.

Does the Factory headunit have amp pre-outs (RCA's)?

How do you take off the dash?

I imagine the controls on the steering wheel wont work with an aftermarket head-unit?

Thanks!!!

I dont know about any RCA outputs (unlikely there are any pre-amp outputs) although I do know they make a kit that adapts most aftermarket head units to work with the wheel controls. Al & ED's carry them.

Check E-bay i found a converter that attaches itself in between the harness gave me 2 "sets" of RCA's. for my stock BOSE

DenliDriver