Junction Block - Left I/P X3

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Junction Block - Left I/P X3 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus +
2	0.8 BK	1050	Ground (HP2)
3	0.5 TN	2501	High Speed GMLAN Serial Data Bus -
4	0.35 YE	6817	LED Backlight Dimming Control (with UK6, except Y91)
5	0.5 TN	2501	High Speed GMLAN Serial Data Bus -
6	0.8 BK	1050	Ground (D07)
7	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus +
8	0.5 RD/WH	3740	Battery Positive Voltage (with UQA, except Y91)

Connector Part Information

OEM: 13516840
Service: 19149295
Description: 8-Way F GT 280 Series (GN)

Terminal Part Information

Pins: 1-7
Terminal/Tray: 13525970/4
Core/Insulation Crimp: Pins 1, 3, 5, 7 - E/A
Core/Insulation Crimp: Pins 2 - 2/A
Release Tool/Test Probe: 15315147/J-35616-4A (PU)

Pin: 8
Terminal/Tray: 15304713/19
Core/Insulation Crimp: 4/4
Release Tool/Test Probe: 15315147/J-35616-4A (PU)