How do i change OVERSPEED warning in the VZ commodore???

[vz23kq]

Hey people
Dont no what happen but everytime i exceed 65kms overspeed warning and BEEP BEEP BEEP comes up and its really pissing me offf!!! I changed it before and set it to 90km but I Cant seem to remeber how i Do it ?? when i go into the computer menu the only thing i can see is the 2nd setting which says Underspeed chime On/off but neither one lets me change the overspeed?
PLEASE HELLLP MEE SOMEONEE

[Stewlz]

Normal trip computer function should let you do this, just hit menu till you get to overspeed, then click up to raise the speed, press set and your all done

[Torquative]

If it has an aftermarket head unit then its stuck on that setting unless you can plug a standard HU back in to make the adjustments.

Its weird it needs a radio to make that change ... its BS ... it makes no sense why ... but thats the facts!