K20 Engine Control Module X3 (L8T)

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: Engine Wiring Harness
OEM Connector: 15497996
Service Connector: 19333091
Description: 73-Way F 0.64, 2.8 Series, Sealed (BK with GY Terminal Position Assurance)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool
I	13587518	J-35616-35 (VT)	J-38125-11A
II	19354746	J-35616-64B (L-BU)	J-38125-215A

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1 - 4	-	-	-	Not Occupied	-	-
5	0.5	VT/BN	5284	Intake Camshaft Position Actuator Solenoid Valve 1	II	-
6	0.5	VT/GN	4320	Powertrain Sensor Bus Enable	II	-
7	-	-	-	Not Occupied	-	-
8	0.5	YE/VT	5275	Intake Camshaft Position Sensor 1	II	-
9	0.5	GY/BU	5300	Intake Camshaft Position Sensor 1 Voltage Reference	II	-
10	0.5	GN	6271	Crankshaft Position Sensor Signal	II	-
11	0.5	VT/BU	6091	Crankshaft Position Sensor Replicated Signal	II	-
12	0.5	BU/WH	2122	Ignition Control 2	II	-
13	0.5	VT/WH	2128	Ignition Control 8	II	-
14	0.5	BN	25	Charge Indicator Control	II	-
15	-	-	-	Not Occupied	-	-
16	0.75	YE	7301	High Pressure Fuel Pump High Control	II	-
17 - 18	-	-	-	Not Occupied	-	-
19	0.5	BN/WH	6354	Replicated Transmission Output Speed 128K Signal	II	-
20	-	-	-	Not Occupied	-	-
21	0.5	BK/BN	6753	Camshaft Position Actuator Solenoid Valve W Low Reference	II	-
22 - 23	-	-	-	Not Occupied	-	-
24	0.5	BK/GN	5301	Intake Camshaft Position Sensor Low Reference 1	II	-
25	0.5	VT/BU	6270	Crankshaft Position Sensor Voltage	II	-
26	0.5	BK/VT	6272	Crankshaft Position Sensor Low Reference	II	-
27	-	-	-	Not Occupied	-	-
28	0.5	GN/GY	2127	Ignition Control 7	II	-
29	0.5	BU/VT	2121	Ignition Control 1	II	-
30	0.5	BK/BU	2129	Ignition Control Low Reference Bank 1	II	-
31	-	-	-	Not Occupied	-	-
32	0.75	VT/BK	7300	High Pressure Fuel Pump Low Control	II	-
33 - 35	-	-	-	Not Occupied	-	-
36	0.5	BK/BN	2752	Throttle Position Sensor Low Reference	II	-
37	0.5	BK/GN	469	Manifold Absolute Pressure Sensor Low Reference	II	-
38 - 39	-	-	-	Not Occupied	-	-
40	0.5	BN/BU	357	Oil Temperature Sensor Signal	II	-
41 - 42	-	-	-	Not Occupied	-	-
43	0.5	BK/GY	626	Engine Control Vehicle Sensors Low Reference 1	II	-
44	0.75	VT/BU	5292	Powertrain Main Relay Fused Supply Voltage 3	II	-
45	0.75	GN	4803	Direct Fuel Injector High Voltage Control Cylinder 3	II	-
46	0.75	GY/BU	4804	Direct Fuel Injector High Voltage Control Cylinder 4	II	-
47	0.75	WH/GN	4805	Direct Fuel Injector High Voltage Control Cylinder 5	II	-
48	0.75	GN/VT	4806	Direct Fuel Injector High Voltage Control Cylinder 6	II	-
49	0.75	BU	4802	Direct Fuel Injector High Voltage Control Cylinder 2	II	-
50	0.75	YE/GY	4807	Direct Fuel Injector High Voltage Control Cylinder 7	II	-
51	0.75	GY	4808	Direct Fuel Injector High Voltage Control Cylinder 8	II	-
52	0.75	BN	4801	Direct Fuel Injector High Voltage Control Cylinder 1	II	-
53 - 54	-	-	-	Not Occupied	-	-
55	0.5	BN/RD	2701	Throttle Position Sensor 5V Reference	II	-
56	0.5	BU/WH	3630	Throttle Position Sensor SENT 1 Signal	II	-
57	0.5	GY/RD	2704	Manifold Absolute Pressure Sensor 5V Reference	II	-
58	0.5	GN/WH	432	Manifold Absolute Pressure Sensor Signal	II	-
59 - 60	-	-	-	Not Occupied	-	-
61	0.5	BU	410	Engine Coolant Temperature Sensor Signal	II	-
62	-	-	-	Not Occupied	-	-
63	0.5	BU/WH	2918	Fuel Rail Pressure Sensor Signal	II	-
64	0.5	GY	23	Generator Field Duty Cycle Signal	II	-
65	0.75	GN/BK	4903	Direct Fuel Injector High Voltage Supply Cylinder 3	II	-
66	0.75	BU/WH	4904	Direct Fuel Injector High Voltage Supply Cylinder 4	II	-
67	0.75	GN/WH	4905	Direct Fuel Injector High Voltage Supply Cylinder 5	II	-
68	0.75	VT	4906	Direct Fuel Injector High Voltage Supply Cylinder 6	II	-
69	0.75	BN/GN	4902	Direct Fuel Injector High Voltage Supply Cylinder 2	II	-
70	0.75	WH/YE	4907	Direct Fuel Injector High Voltage Supply Cylinder 7	II	-
71	0.75	WH/GN	4908	Direct Fuel Injector High Voltage Supply Cylinder 8	II	-
72	0.75	BN/WH	4901	Direct Fuel Injector High Voltage Supply Cylinder 1	II	-
73	2.5	BK/WH	451	Signal Ground	I	-