Roof Beacon Switch (TRW)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Roof Beacon Switch (TRW) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.5 BK	1050	Ground
2	0.35 BN/WH	230	Instrument Panel Lamps Dimming Control
3	0.5 RD/WH	240	Battery Positive Voltage
4	0.5 WH	5990	Emergency Lamp Switch Signal
5	-	-	Not Used

Connector Part Information

Harness: Overhead Console
OEM Connector: 15491277
Service Connector: 88988747
Description: 5-Way F HCM Series (BK)

Terminal Part Information

Terminated Lead: Service by Connector Assembly - 88988747
Release Tool: 12094429
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: SHCM-A03T-P025/20
Core/Insulation Crimp: J/J