K20 Engine Control Module X1 Connector End View (L99 or LS3)

WARNING: This page is about a different car, the 2011 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: K20 Engine Control Module X1 (L99 or LS3) Connector End View

Courtesy of GENERAL MOTORS CORP.

K20 Engine Control Module X1 (L99 or LS3)

Pin	Wire	Circuit	Function
1	0.5 OG/BK	1786	Park/Neutral Signal (MYC)
2-7	-	-	Not Available
8	0.35 L-GN	5007	Backup Lamp Switch Signal (M10)
9	0.5 L-BU/WH	6311	Brake Pedal Switch Signal
10	0.5 PU/WH	1668	HO2S High Signal Bank 1 Sensor 2
11	0.5 TN/WH	1669	HO2S Low Signal Bank 1 Sensor 2
12	0.5 OG/BK	380	A/C Refrigerant Pressure Sensor Signal
13	0.5 TN	5514	Low Reference
14-15	-	-	Not Available
16	0.5 D-BU	1936	Fuel Level Sensor Signal
17	0.5 D-BU	473	High Speed Cooling Fan Relay Control
18	0.35 D-BU	5985	Serial Data Wake - Up Signal
19	0.5 PK	439	Ignition Voltage
20	0.8 RD/WH	440	Battery Positive Voltage
21	0.5 OG	6030	Brake Booster Vacuum Sensor Signal (L99)
22	0.5 YE/BK	6032	Low Reference (L99)
23	0.5 PU	1272	Low Reference
24	0.5 D-GN	890	Fuel Tank Pressure Sensor Signal
26	0.5 YE	6111	Clutch Pedal Position Sensor Signal (M10)
27	0.5 TN	2501	High Speed GMLAN Serial Data Bus -
28	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus +
29	0.5 D-BU	1161	APP Sensor 1 Signal
30	0.5 BN	1271	Low Reference
31	0.5 BN/WH	6281	Low Reference
32	0.5 L-BU	1162	APP Sensor 2 Signal
33	0.5 GY	2709	5-Volt Reference 1
34	0.5 GY	2700	5-Volt Reference 1
35	-	-	Not Available
36	0.5 TN	1274	5-Volt Reference 1
37	0.5 L-BU	6289	Intake Air Temperature Sensor Signal
38	0.5 TN	2760	Low Reference
39-40	-	-	Not Available
41	0.5 YE	492	MAF Sensor Signal
42	0.5 WH	6110	Low Reference (M10)
43-46	-	-	Not Available
47	0.8 PK/BK	5290	Ignition Voltage
48	-	-	Not Available
49	0.5 TN	1671	HO2S Low Signal Bank 2 Sensor 2
50	0.5 D-GN/WH	465	Fuel Pump Relay Control
51	-	-	Not Available
52	0.5 PU/WH	6386	Starter Relay Control
53	0.5 GY	6031	5-Volt Reference 2 (L99)
54	0.5 TN	6109	5-Volt Reference 2 (M10)
55	-	-	Not Available
56	0.5 WH/BK	1164	5-Volt Reference 2
57	-	-	Not Available
58	0.5 D-GN	335	Low Speed Cooling Fan Relay Control
59	0.5 YE	5991	Powertrain Relay Control
60	-	-	Not Available
61	0.5 WH	1310	EVAP Canister Vent Solenoid Control
62	-	-	Not Available
63	0.5 D-GN/WH	459	A/C Compressor Clutch Relay Control
64	0.5 OG/WH	3223	HO2S Heater Low Control Bank 2 Sensor 2
65	0.5 GY/WH	3122	HO2S Heater Low Control Bank 1 Sensor 2
66	0.5 GY	587	Skip/Shift Solenoid Control (M10)
67	-	-	Not Available
68	0.5 BN/WH	419	MIL Control
69	0.5 PU	1670	HO2S High Signal Bank 2 Sensor 2
70	0.5 L-BU	1937	Fuel Level Sensor Signal - Secondary
71	0.5 GY/BK	6355	VSS Signal High (M10)
72	0.5 PU/WH	6356	VSS Signal Low (M10)
73	2 BK/WH	451	Ground

Connector Part Information

Harness Type: Engine
OEM Connector: 13716072
Service Connector: 88988931
Description: 73-Way F 0.64 2.8 Series, Sealed (BK)

Terminal Part Information

Pins: 8, 18
Terminated Lead: 13575811
Release Tool: J-38125-213
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H

Pins: 1, 9-13, 16, 17, 19, 20-24, 26-34, 36-38, 41, 42, 47, 49, 50, 52-54, 56, 58, 59, 61, 63, 64-66, 68-72
Terminated Lead: 13575575
Release Tool: J-38125-213
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins: 1, 9-13, 16, 17, 19, 21-24, 26-34, 36-38, 41, 42, 49, 50, 52-54, 56, 58, 59, 61, 63, 64-66, 68-72 - J/J
Core/Insulation Crimp: Pins: 20, 47 - K/K

Pin: 73
Terminated Lead: 13575351
Release Tool: J-38125-12A
Diagnostic Test Probe: J-35616-35 (VT)
Terminal/Tray: 1326030-8/17
Core/Insulation Crimp: A/4