Section 154 (System Wiring Diagrams - 1500): Radio

WARNING: This page is about a different car, the 2002 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Radio Circuit, Base

Fig 2: Radio Circuit, Up Level W/ OnStar

Fig 3: Radio Circuit, Up Level W/O OnStar