Nitrogen Oxides Sensor 1 (Diesel)

WARNING: This page is about a different car, the 2014 GMC Sierra 3500 HD, 2014 GMC Sierra 2500 HD, 2014 Chevrolet Silverado 3500 HD, and 2014 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

Connector Part Information

Harness Type: Engine Chassis
OEM Connector: 13738257
Service Connector: 13578974
Description: 6-Way F (BK)

Terminal Part Information

Pins: 1, 4
Terminal/Tray: 776491-1/Lear 17-21
Core/Insulation Crimp: A/Not Available
Release Tool/Test Probe: J-38125-11A/J-35616-66 (YE)

Pins: 2, 3, 5, 6
Terminal/Tray: Not Available
Core/Insulation Crimp: Not Available/Not Available
Release Tool/Test Probe: J-38125-11A/J-35616-4A (PU)

Nitrogen Oxides Sensor 1 (Diesel)

Pin	Wire	Circuit	Function
1	1 PU	3674	Nox Sensor 1 Supply Voltage
2	0.5 L-GN	7494	High Speed GMLAN Serial Data (-) (3)
3	0.5 D-GN	7493	High Speed GMLAN Serial Data (+) (3)
4	1 TN	3673	Nox Sensor 1 Ground
5	0.5 L-GN	7494	High Speed GMLAN Serial Data (-) (3)
6	0.5 D-GN	7493	High Speed GMLAN Serial Data (+) (3)