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Originally Posted by samm  yeah, i took my car to my local caddy dealer and they also said i needed a firmware update... not sure though if he meant for my denso nav or with my computer. i had asked him to recalibrate it with a tech 2 so my car knows that it has nav (it was originally a non nav) and he didn't do it cuz he said something needed a firmware update. i would like to see some more info on this too if anyone knows anything about it |
Your problem is different then the other guy... I used to say that swapping NAV system was impossible... I was wrong... it is really really hard... But can be done...
This thread has all the info that you and your dealer needs to update your BCM... I'm pretty sure the denso unit is not "flash" upgradable.
http://www.cadillacforums.com/forums...8-seville.html (2002 NAVIGATION IN a 1998 Seville)