2003 Tahoe OEM Navigation installation

[mvl30]

I just installed a navigation system from a Trailblazer, the part number is GM: 15800000. I got it unlocked at a local mechanic with a tech 2 scanner. The chime sounds different, I think it's the sound of the chime from the Trailblazer. My question is, can I change the chime back to what it was by reprogramming the radio to the Tahoe's settings? Also the bose sounds a tad bit different. This is probably due to the radio being programmed to a trailblazers cabin. Any ideas? Should I take it to the dealer to see what they can do? Thanks!

[MikeNH]

Pretty sure the radio generates the chime sound. Not sure if you can get the radio reflashed to Tahoe specs as I don't think nav was an option in 2003.

[tanked_darren]

At least as old as 2001 the radio makes the chime. In my experience. I don't know because I don't build the radio but I bet the chime is not changeable.