Powertrain Control Module (PCM) Connector End Views

Powertrain Control Module (PCM) Terminal Identification - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357150 56-Way F Micro-Pack/064 Series (BU)
Pin	Wire Color	Circuit Number	Function
1-3	-	-	Not Used
4	GY	2700	5 Volt Reference
5	-	-	Not Used
6	BN/WH	419	MIL Control
7	BK	2751	Low Reference
8	BK	2759	Low Reference
9	-	-	Not Used
10	WH	1310	EVAP Canister Vent Solenoid Control
11-14	-	-	Not Used
15	D-GN	1049	Class 2 Serial Data
16-17	-	-	Not Used
18	BN	1141	Ignition 3 Voltage
19	PK	439	Ignition 1 Voltage
20	ON	540	Battery Positive Voltage
21	WH	121	Engine Speed Signal (JL4)
22	D-GN	389	Vehicle Speed Signal
23	YE/BK	625	Starter Enable Relay Control
24	BN	5069	Powertrain Relay
25	-	-	Not Used
26	D-GN	890	Fuel Tank Pressure Sensor Signal
27-30	-	-	Not Used
31	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
32	WH	17	Stop Lamp Switch Signal
33	D-GN/WH	459	A/C Compressor Clutch Relay Control
34-36	-	-	Not Used
37	D-GN/WH	465	Fuel Pump Relay Control
38-42	-	-	Not Used
43	PU	1589	Fuel Level Sensor Signal
44	GY	1884	Cruise Control Set/Coast and Resume/Accelerate Switch Signal
45	YE	1996	Remote Shift Selector Signal (L32)
46-47	-	-	Not Used
48	D-GN	335	Low Speed Cooling Fan Relay Control
49	-	-	Not Used
50	D-BU	473	High Speed Cooling Fan Relay Control
51-52	-	-	Not Used
53	GY	2709	5 Volt Reference
54-56	-	-	Not Used

Powertrain Control Module (PCM) Terminal Identification - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357133 73-Way F Micro-Pack/064 Series (BK)
Pin	Wire Color	Circuit Number	Function
1	BN	1456	EGR Valve Position Signal
2	OG/BK	1061	UART Serial Data
3	TN	800	UART Serial Data
4	BK/WH	845	Fuel Injector 5 Control
5	BK	1744	Fuel Injector 1 Control
6	YE/BK	846	Fuel Injector 6 Control
7	PK/BK	1746	Fuel Injector 3 Control
8	BK	2753	Low Reference
9	L-GN/BK	1745	Fuel Injector 2 Control
10	L-BU/BK	844	Fuel Injector 4 Control
11	TN/BK	424	IC Timing Signal
12	BK/WH	3112	HO2S Heater Low Control Sensor 1
13	RD	1676	EGR Solenoid High Control
14-15	-	-	Not Used
16	GY	435	EGR Solenoid Low Control
17	GY	597	5 Volt Reference (L32)
18	L-GN	432	MAP Sensor Signal
19	-	-	Not Used
20	BK	476	Low Reference (L32)
21-23	-	-	Not Used
24	GY/BK	433	BARO Sensor Signal (L32)
25	-	-	Not Used
26	BK	630	Camshaft Position Signal
27	PU/WH	430	Low Resolution Engine Speed Signal
28	L-BU/BK	647	Medium Resolution Engine Speed Signal
29	BK	2761	Low Reference
30	OG/BK	469	Low Reference
31	BN	1174	Oil Level Switch Signal
32	-	-	Not Used
33	GY	2702	5 Volt Reference
34	GY	2704	5 Volt Reference
35-36	-	-	Not Used
37	RD/BK	453	Electronic Spark Timing Low Reference Signal
38-40	-	-	Not Used
41	D-GN/WH	428	EVAP Canister Purge Solenoid Control
42-45	-	-	Not Used
46	D-BU	496	Knock Sensor 1 Signal
47	TN/WH	3111	Oxygen Sensor Signal - Sensor 1 Low
48	PU/WH	3110	Oxygen Sensor Signal - Sensor 1 High
49-52	-	-	Not Used
53	RD	225	Generator Turn On Signal
54	-	-	Not Used
55	YE	410	ECT Sensor Signal
56	-	-	Not Used
57	TN/BK	231	Oil Pressure Switch Signal
58	L-BU	1876	Knock Sensor 2 Signal
59-60	-	-	Not Used
61	WH	423	IC Timing Control
62-72	-	-	Not Used
73	BK/WH	451	Ground

Powertrain Control Module (PCM) Terminal Identification - C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357151 56-Way F Micro-Pack/064 Series (GY)
Pin	Wire Color	Circuit Number	Function
1-3	-	-	Not Used
4	TN/WH	3121	Oxygen Sensor Signal - Sensor 2 Low
5	YE/BK	1227	TFT Sensor Signal
6	YE	492	MAF Sensor Signal
7	-	-	Not Used
8	BK/WH	3122	HO2S Heater Low Control - Sensor 2
9-10	-	-	Not Used
11	RD/BK	1230	AT ISS High Signal
12	YE	400	OSS High Signal
13-14	-	-	Not Used
15	GY	773	Transmission Range Switch Signal C
16-18	-	-	Not Used
19	PU	3120	Oxygen Sensor Signal - Sensor 2 High
20	TN/BK	464	Delivered Torque Signal (L32)
21	-	-	Not Used
22	YE	772	Transmission Range Switch Signal B
23	WH	776	Transmission Range Switch Signal P
24	WH	1804	TCC Release Switch Signal
25	-	-	Not Used
26	TN	472	IAT Sensor Signal
27-32	-	-	Not Used
33	L-GN	1222	Shift Solenoid A Valve Control
34	BK/WH	771	Transmission Range Switch Signal A
35-37	-	-	Not Used
38	GY	1724	Supercharger Boost Control Solenoid Control (L32)
39	TN/BK	422	TCC Solenoid Valve Control
40	OG/BK	463	Requested Torque Signal (L32)
41-43	-	-	Not Used
44	PU	401	OSS Low Signal
45	-	-	Not Used
46	YE/BK	1223	Shift Solenoid B Valve Control
47	RD/BK	1228	PC Solenoid Valve High Control (Sol. A)
48	BK	452	Low Reference
49	D-BU/WH	1231	AT ISS Low Signal
50	BK	2760	Low Reference
51	L-BU/WH	1229	PC Solenoid Valve Low Control (Sol. A)
52-56	-	-	Not Used