X350 Chassis Wiring Harness to Fuel Tank Wiring Harness (L5P+N2N)

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY	Courtesy of GENERAL MOTORS COMPANY
Connector Part Information Harness Type: Chassis Wiring Harness OEM Connector: 33180742 Service Connector: 19354078 Description: 8-Way F 2.8 Series, Sealed (L-GY)	Connector Part Information Harness Type: Fuel Tank Wiring Harness OEM Connector: Not Available Service Connector: Service by Harness - See Part Catalog Description: 8-Way M (L-GY)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool
I	Not required	J-35616-4A (PU)	No Tool Required
II	Not required	No Tool Required	No Tool Required

Pin	Size	Color	Circuit	Terminal Type ID	Option	Function	Pin	Size	Color	Circuit	Terminal Type ID	Option
1	2.5	GY	120	I	-	Fuel Pump Control	1	2.5	GY	120	II	-
2	2.5	YE/GY	4137	I	-	Fuel Pump Supply Voltage Phase 2	2	2.5	YE/GY	4137	II	-
3	2.5	WH/BN	4138	I	-	Fuel Pump Supply Voltage Phase 3	3	2.5	WH/BN	4138	II	-
4	0.5	BN	7444	I	-	Fuel Pump Assembly Shield Ground	4	0.5	BN	7444	II	-
5	0.5 0.75	BU/VT BU/VT	1589 1589	I I	-FHS L5P	Primary Fuel Level Sensor Signal Primary Fuel Level Sensor Signal	5	0.5 0.75	BU/VT BU/VT	1589 1589	II II	-FHS L5P
6	0.5	BK/GN	6281	I	-	Fuel Level Sensor Low Reference	6	0.5	BK/GN	6281	II	-
7 - 8	-	-	-	-	-	Not Occupied	7 - 8	-	-	-	-	-