How can I use my GPS in my Corvette while driving? I need an over ride code to enable the unit?

February 19, 2009 by admin · 2 Comments
Filed under: Car Audio 
gps
Linda S asked:


The GPS in my new Vette will not allow programming while the car is in gear, this renders the unit virtually useless. I would like to have my passenger operate the unit, not myself as that might be dangerous. It would be most helpful to get around traffic jams, accidents, etc. The people at GM will not help, but there is got to be a way to hack around the block?
Help!

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2 Responses to “How can I use my GPS in my Corvette while driving? I need an over ride code to enable the unit?”
  1. Bumps says:
    February 22, 2009 at 5:01 am

    I am trying to do the same thing and doing some searching this is what I found.

    - The unit is made by a Japanese company called Denso. So is the units found in other GM brands, Lexuses, Toyotas, Land-Rovers,…

    “- There is a DIAG screen that can be accessed when going in the NAV screen, then going into MENU and then touching the screen and holding your finger for 5 seconds a bit right to the yellow Nav. Menu that is on top (about half an inch right of the word Menu)

    - From that DIAG menu, there are 3 codes that are known to be working : 660, 9448, and 295660
    - The difference between the 3 codes are little:
    660 : diagnostic menus, no back button to go back to the menus (you have to turn off the car to exit this screen)
    9448 : diagnostic menus plus a button to update the software and a back button to go back to the menus
    295660 : diagnostic menus, no software update button but a back button to get back to the menus
    - When going into the DIAG screens and back to the menus (if you use code 9448 or 295660), the hard button on the left of the unit are not backlit anymore until you turn off and on the car

    - Nothing in the DIAG screens that let us use the NAV while moving, nothing about playing video DVD either (there are really only diagnostic tools there).

    - Other Denso units found in other brands have different diag codes. What work for one unit is not working on ours. There are codes on Lexuses, Toyotas, Range Rover that enable address input while moving or DVD play, so there is hope we can find a similar thing on the C6 unit.

    - On Toyotas that have the Denso unit wihtout the touchscreen, the access to the diag screen is different. You need to use a combination of things, like left signal, lights on/off… (I don’t know the exact combination).”

    So I guess their is still no way of bypassing the NAV system. Hope this helps.

  2. rand0mh3r0 says:
    February 25, 2009 at 12:07 pm

    Ok i not 100% sure about this but i know for aftermarket GPS/In-Dash units there is a wire that is usally hooked into the brake that will only allow units to be in use when the car is parked or brake is on …..if you can find that wire and GROUND it then you can use it while driving…a possible way to find the wire is if you go behind the radio and use a multimeter and check the continuity of the wire the one that need to be grounded will only show ground when the car is in park and not in gear

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