Hey,
I have a 2003 cadillac cts with grey dash. I wana upgrade it with nav unit.
There is one on ebay just wondering would that fit in my vechile?

http://cgi.ebay.com/ebaymotors/2003-Cadillac-CTS-6-cd-radio-Navigation-upgrade-LKQ_W0QQitemZ200216841226QQcmdZViewItem

thanks,
Nk.

This is a 2003 Pewter Dash CDROM Nav. They were only made for six months before the CTS went to the ebony dash and DVD based Nav. Yes, it will work, but you need to read the Nav retrofit guide over at CadillacFAQ first. You'll need to jumper the VSS signal from behind your instrument panel to a terminal on the Head Unit harness (your current harness will work fine), and have the VIN cleared at a dealer (if the seller didn't do it first), since you'll likely have a 'theftlock activated' screen.