WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Components In Center Console
Courtesy of GENERAL MOTORS CORP.
Fig 2: Base Radio - Rear Component View
Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Radio Connectors (Premium Radio)
Courtesy of GENERAL MOTORS CORP.
Fig 4: Front Door Wiring (Front Passenger Shown, Driver Opposite)
Courtesy of GENERAL MOTORS CORP.
Fig 5: Door Control Switches - Driver
Courtesy of GENERAL MOTORS CORP.
Fig 6: RSA Controller/Auxiliary Power Outlet - Rear Wiring