Sierra 2500 2WD V8-6.6L DSL Turbo (2007)
Entertainment System Control Module: Locations
Entertainment/Communication Component Views
Headliner and Overhead Console (U42/5Y0)
1 - Roof Beacon Switch (5Y0)
2 - Video Display (U42)
3 - Infrared Module (U42)
4 - Emergency Vehicle Wiring Blunt Cuts (5Y0)
5 - Emergency Vehicle Roof Lamp Relay (5Y0)
