OS-2 PAC really needed or not?

you will lose your onstar, warning and door chimes, and you will have to run your own acc power
the harness retains onstar but what I need also with this is the chime module which is 21$ //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

GM made it really expensive to hook up an aftermarket radio.

 
the harness retains onstar but what I need also with this is the chime module which is 21$ //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif
GM made it really expensive to hook up an aftermarket radio.
i meant if you do not use the harness sorry for not specifying

and yes they did, 08 trucks only have switched power in 3 places and only one is inside the vehicle and its at the brake switch gayy

 
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