K56 Serial Data Gateway Module X2

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

Connector Part Information

Harness Type:Instrument Panel Wiring Harness
OEM Connector: 35074169
Service Connector: 13519320
Description: 30-Way F 0.5 MQS Series (BK with BU Front Housing)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool
I	19370262	EL-35616-58 (BK)	EL-38125-58

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1 - 3	-	-	-	Not Occupied	-	-
4	0.35	BU/WH	2500	High Speed GMLAN Serial Data [+] 1	I	-
5	0.35	WH/BU	2501	High Speed GMLAN Serial Data [-] 1	I	-
6	0.35	BU/GY	3935	High Speed GMLAN Serial Data [+] 8	I	-
7	0.35	WH/GY	3936	High Speed GMLAN Serial Data [-] 8	I	-
8	0.35	BU/BK	6105	High Speed GMLAN Serial Data [+] 2	I	-
9	0.35	GY	6106	High Speed GMLAN Serial Data [-] 2	I	-
10	0.35	BU/GN	1304	High Speed GMLAN Serial Data [+] 9	I	-
11 - 13	-	-	-	Not Occupied	-	-
14	0.35	BU	2500	High Speed GMLAN Serial Data [+] 1	I	-
15	0.35	WH	2501	High Speed GMLAN Serial Data [-] 1	I	-
16	0.35	BU/GY	3935	High Speed GMLAN Serial Data [+] 8	I	-
17	0.35	WH/GY	3936	High Speed GMLAN Serial Data [-] 8	I	-
18	0.35	BU/YE	6105	High Speed GMLAN Serial Data [+] 2	I	-
19	0.35	WH	6106	High Speed GMLAN Serial Data [-] 2	I	-
20	0.35	WH/GN	1305	High Speed GMLAN Serial Data [-] 9	I	-
21 - 22	-	-	-	Not Occupied	-	-
23	0.35	VT/BK	1639	Run/Crank Ignition 1 Voltage	I	-
24	-	-	-	Not Occupied	-	-
25	0.35	WH/BU	5986	Serial Data Communication Enable	I	-
26 - 30	-	-	-	Not Occupied	-	-