K20 Engine Control Module X3 (L8T)

WARNING: This page is about a different car, the 2023 GMC Savana 3500, 2023 GMC Savana 2500, 2023 Chevrolet Express 3500, and 2023 Chevrolet Express 2500. 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: 35505841
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	19354746	J-35616-64B (L-BU)	J-38125-215A
II	Not Available	J-35616-35 (VT)	J-38125-11A

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	I	-
6	0.5	VT/GN	4320	Powertrain Sensor Bus Enable	I	-
7	-	-	-	Not Occupied	-	-
8	0.5	YE/VT	5275	Intake Camshaft Position Sensor 1	I	-
9	0.5	GY/BU	5300	Intake Camshaft Position Sensor 1 Voltage Reference	I	-
10	0.5	GN	6271	Crankshaft Position Sensor Signal	I	-
11	-	-	-	Not Occupied	-	-
12	0.5	BU/WH	2122	Ignition Control 2	I	-
13	0.5	VT/WH	2128	Ignition Control 8	I	-
14	0.5	BU/WH	225	Generator Turn On Signal	I	-
15	-	-	-	Not Occupied	-	-
16	0.75	YE	7301	High Pressure Fuel Pump High Control	I	-
17 - 18	-	-	-	Not Occupied	-	-
19	0.5	BN/VT	6399	Replicated Transmission Output Speed Signal	I	-
20	-	-	-	Not Occupied	-	-
21	0.5	BK/BN	6753	Camshaft Position Actuator Solenoid Valve W Low Reference	I	-
22 - 23	-	-	-	Not Occupied	-	-
24	0.5	BK/GN	5301	Intake Camshaft Position Sensor Low Reference 1	I	-
25	0.5	VT/BU	6270	Crankshaft Position Sensor Voltage	I	-
26	0.5	BK/VT	6272	Crankshaft Position Sensor Low Reference	I	-
27	-	-	-	Not Occupied	-	-
28	0.5	GN/GY	2127	Ignition Control 7	I	-
29	0.5	BU/VT	2121	Ignition Control 1	I	-
30	0.5	BK/BU	2129	Ignition Control Low Reference Bank 1	I	-
31	-	-	-	Not Occupied	-	-
32	0.75	VT/BK	7300	High Pressure Fuel Pump Low Control	I	-
33 - 35	-	-	-	Not Occupied	-	-
36	0.5	BK/BN	2752	Throttle Position Sensor Low Reference	I	-
37	0.5	BK/GN	469	Manifold Absolute Pressure Sensor Low Reference	I	-
38 - 39	-	-	-	Not Occupied	-	-
40	0.5	BN/BU	357	Oil Temperature Sensor Signal	I	-
41 - 42	-	-	-	Not Occupied	-	-
43	0.5	BK/GY	626	Engine Control Vehicle Sensors Low Reference 1	I	-
44	0.75	VT/BK	1239	Run/Crank Ignition 1 Voltage	I	-
45	0.75	GN	4803	Direct Fuel Injector High Voltage Control Cylinder 3	I	-
46	0.75	GY/BU	4804	Direct Fuel Injector High Voltage Control Cylinder 4	I	-
47	0.75	WH/GN	4805	Direct Fuel Injector High Voltage Control Cylinder 5	I	-
48	0.75	VT/GN	4806	Direct Fuel Injector High Voltage Control Cylinder 6	I	-
49	0.75	BU	4802	Direct Fuel Injector High Voltage Control Cylinder 2	I	-
50	0.75	YE/GY	4807	Direct Fuel Injector High Voltage Control Cylinder 7	I	-
51	0.75	GY	4808	Direct Fuel Injector High Voltage Control Cylinder 8	I	-
52	0.75	BN	4801	Direct Fuel Injector High Voltage Control Cylinder 1	I	-
53 - 54	-	-	-	Not Occupied	-	-
55	0.5	BN/RD	2701	Throttle Position Sensor 5V Reference	I	-
56	0.5	BU/WH	3630	Throttle Position Sensor SENT 1 Signal	I	-
57	0.5	GY/RD	2704	Manifold Absolute Pressure Sensor 5V Reference	I	-
58	0.5	GN/WH	432	Manifold Absolute Pressure Sensor Signal	I	-
59 - 60	-	-	-	Not Occupied	-	-
61	0.5	BU	410	Engine Coolant Temperature Sensor Signal	I	-
62	-	-	-	Not Occupied	-	-
63	0.5	BU/WH	2918	Fuel Rail Pressure Sensor Signal	I	-
64	0.5	GY	23	Generator Field Duty Cycle Signal	I	-
65	0.75	GN/GY	4903	Direct Fuel Injector High Voltage Supply Cylinder 3	I	-
66	0.75	BU/WH	4904	Direct Fuel Injector High Voltage Supply Cylinder 4	I	-
67	0.75	GN/WH	4905	Direct Fuel Injector High Voltage Supply Cylinder 5	I	-
68	0.75	VT/GY	4906	Direct Fuel Injector High Voltage Supply Cylinder 6	I	-
69	0.75	BU/GY	4902	Direct Fuel Injector High Voltage Supply Cylinder 2	I	-
70	0.75	WH/YE	4907	Direct Fuel Injector High Voltage Supply Cylinder 7	I	-
71	0.75	GY/WH	4908	Direct Fuel Injector High Voltage Supply Cylinder 8	I	-
72	0.75	BN/WH	4901	Direct Fuel Injector High Voltage Supply Cylinder 1	I	-
73	3	BK/WH	1551	Signal Ground	II	-