Engine Control Module (ECM) Connector End View C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15356823 37-Way F Micro 64 Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	D-BU	473	High Speed Cooling Fan Relay Control
2-6	-	-	Not Available
7	TN	1274	5-Volt Reference
8	D-BU	1161	APP Sensor 1 Signal
9	TN/BK	231	Oil Pressure Switch Signal
10	GY	397	Cruise Control On Switch Signal
11	RD	225	Generator Turn On Signal
12	TN	2501	CAN Low
13	D-GN/WH	459	A/C Compressor Clutch Relay Control
14	-	-	Not Available
15	OG	480	Battery Positive Voltage
16	OG	2740	Ignition 1 Voltage
17	-	-	Not Available
18	WH	1310	EVAP Canister Vent Solenoid Control
19-20	-	-	Not Available
21	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
22-23	-	-	Not Available
24	BN	1271	Low Reference
25	BK	2759	Low Reference
26	BN	86	Cruise Control Release Signal
27	L-BU	20	Stop Lamp Switch Signal
28	OG/BK	463	Requested Torque Signal
29	TN/WH	2500	CAN High
30	L-GN	497	Fuel Pump Relay Control
31	WH	2561	Main Relay Control
32	OG	2740	Ignition 1 Voltage
33-34	-	-	Not Available
35	WH	121	Engine Speed Signal
36	-	-	Not Available
37	D-GN	890	Fuel Tank Pressure Sensor Signal
38	PU	30	Fuel Level Sensor Signal
39	-	-	Not Available
40	L-BU	1162	APP Sensor 2 Signal
41	-	-	Not Available
42	GY/BK	87	Cruise Control Resume/Accel Switch Signal
43	D-BU	84	Cruise Control Set/Coast Switch Signal
44	WH	1909	Vehicle Speed Signal
45	TN/BK	2500	CAN High
46	-	-	Not Available
47	PK	339	Ignition 1 Voltage
48	OG	2740	Ignition 1 Voltage
49	-	-	Not Available
50	D-GN	335	Low Speed Cooling Fan Relay Control
51	-	-	Not Available
52	TN/BK	464	Delivered Torque Signal
53	PU	1319	Engine/Radio Serial Data K-Line
54-55	-	-	Not Available
56	WH/BK	1164	5-Volt Reference
57-60	-	-	Not Available
61	TN	2501	CAN Low
62	-	-	Not Available
63	GY	2709	5-Volt Reference
64	-	-	Not Available