WARNING: This page is about a different car, the 2002 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Radio Circuits, Base Radio
Fig 2: Radio Circuits, Premium Radio (1 of 2)
Fig 3: Radio Circuits, Premium Radio (2 of 2)
Fig 4: Radio Circuits, YE9 W/ Rear Seat Audio (1 of 2)
Fig 5: Radio Circuits, YE9 W/ Rear Seat Audio (2 of 2)