bose replacement, keep subs? without pac interface?

[jfd145]

Is it possible to retaintain the factory sub without the use of a pac interface?

my thinking was to bypass the amp for speakers in the car as the pac interface keeps going bad, and i have to pull the radio out of the customers car, and reset the interface.

So I was going to run speaker wire from the radio to the output of the amp for the speakers. Then run a jumper from the rear speakers to the input of the amp to retain the sub

Does anyone have the wiring diagram for the 2002 Yukon denali....mainly the inputs for the sub

thanks