GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 DeVille 🢒 Body and Accessories 🢒 Instrument Panel, Gages, and Console 🢒 Audible Warnings Schematics
Figure 1:

Radio Output, Left Front Door Open Signal and Key-In-Ignition Signal
Object Number: 798196 Size: FS
Master Electrical Component List
Audible Warnings Description and Operation
Seat Belt Switch and Park Lamp Signal
Instrument Panel, Gages, and Console Schematic Icons
Class 2 Serial Data (1 of 3)
Class 2 Serial Data (3 of 3)
Instrument Panel, Gages, and Console Schematic Icons
G201 (1 of 3)
G201 (1 of 3)
Figure 2:

Seat Belt Switch Signal and Park Lamp Signal
Object Number: 798197 Size: FS
Master Electrical Component List
Audible Warnings Description and Operation
Radio Output, Left Front Door Open Signal and Key-In-Ignition Signal
Headlamp Switch and Park Lamp Relay
Headlamp Switch and Park Lamp Relay
Headlamp Switch and Park Lamp Relay
Headlamp Switch and Park Lamp Relay
Class 2 Serial Data (2 of 3)
Class 2 Serial Data (1 of 3)
Fasten Seat Belt Switch and Indicator