OEM NAV set up issue

[trimcat]

I just installed an OEM nav unit pat #25857364 into my 2008 LT3 Z71 Tahoe. The install went well, connected the VSS and Voice recognition, when I turned on the radio I got the Theft lock screen. No problem, took it to the dealer to have the VIN cleared and had them program my radio. When I am driving back from the dealership I notice that the chimes and warning sounds no longer work (the worked fine before, even when the Theft Lock screen was up). In addition, the NAV screens default is the HYBRID screen (complete with battery and engine info) I have a Z71! So in short, is this a problem with the TECH II programing or did I buy a NAV unit specific for the HYBRID. BTW when I first started the NAV screen, before it displayed Theft Lock the GM screen would come on for about 2 seconds, on that screen it used to display "powered by Bose", now it is blank.

 

[TN Tahoe]

I just installed an OEM nav unit pat #25857364 into my 2008 LT3 Z71 Tahoe. The install went well, connected the VSS and Voice recognition, when I turned on the radio I got the Theft lock screen. No problem, took it to the dealer to have the VIN cleared and had them program my radio. When I am driving back from the dealership I notice that the chimes and warning sounds no longer work (the worked fine before, even when the Theft Lock screen was up). In addition, the NAV screens default is the HYBRID screen (complete with battery and engine info) I have a Z71! So in short, is this a problem with the TECH II programing or did I buy a NAV unit specific for the HYBRID. BTW when I first started the NAV screen, before it displayed Theft Lock the GM screen would come on for about 2 seconds, on that screen it used to display "powered by Bose", now it is blank.

I hate to say it but I think you have installed the wrong Nav unit for your Tahoe. When I looked on Ebay at Navigation units for Chevy models. The Hybrid radio Navigation unit is made ONLY for the Hybrid Tahoe.