I have an 08 silverado 1500 crew cab lt1 w/out bose or dvd,a friend at work has 08 radio with navigation,map disc,antenna and back up camera he is selling,gm part number is 25846420, would this unit work in mine?

 

I have an LT w/o Bose, also. So far, it seems every OEM Nav unit has to have an aftermarket amp installed in addition to the VSS Voice Harness and GPS Antenna.