Powertrain Control Module (PCM) Connector End Views

Powertrain Control Module (PCM) C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15430210 56-Way F Micro-Pack 64 Series Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1	TN/BK	2500	High Speed GMLAN Serial Data (+)
2	TN	2501	High Speed GMLAN Serial Data (-)
3-5	-	-	Not Used
6	D-GN/WH	459	A/C Compressor Clutch Relay Control
7	BN	1271	Low Reference
8	TN	1274	5-Volt Reference
9	-	-	Not Used
10	D-GN	335	Low Speed Cooling Fan Relay Control
11	-	-	Not Used
12	PU	1589	Fuel Level Sensor Signal
13	PK/BK	5290	Ignition 1 Voltage
14	-	-	Not Used
15	PU	1807	Class 2 Serial Data
16	-	-	Not Used
17	GY	2700	5-Volt Reference
18	BN	4	Accessory Voltage
19	PK	639	Ignition 1 Voltage
20	RD/WH	540	Battery Positive Voltage
21	-	-	Not Used
22	WH	1310	EVAP Canister Vent Solenoid Control
23	-	-	Not Used
24	D-GN	890	Fuel Tank Pressure Sensor Signal
25	-	-	Not Used
26	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
27	D-BU	1161	APP Sensor 1 Signal
28	-	-	Not Used
29	OG/BK	1057	Low Reference
30	WH/BK	1164	5-Volt Reference
31	-	-	Not Used
32	WH	17	Stop Lamp Switch Signal
33-36	-	-	Not Used
37	D-GN/WH	465	Fuel Pump Relay Control
38	BN	5069	Main Relay Control
39	-	-	Not Used
40	BN/WH	419	MIL Control
41	L-BU	1162	APP Sensor 2 Signal
42	-	-	Not Used
43	PU	1272	Low Reference
44	-	-	Not Used
45	PU	5526	Tap Up/Tap Down Switch Signal
46	-	-	Not Used
47	GY	705	5-Volt Reference
48	YE	447	Starter Relay Coil Control
49-50	-	-	Not Used
51	D-BU	473	High Speed Cooling Fan Relay Control
52-53	-	-	Not Used
54	PU/WH	1035	Starter Relay Coil Supply Voltage
55	OG/BK	1057	Low Reference
56	TN	5514	Low Reference

Powertrain Control Module (PCM) C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15430225 73-Way F Micro 64 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	OG	225	Generator Turn On Signal
2	D-GN	485	TP Sensor 1 Signal
3-5	-	-	Not Used
6	GY	2701	5-Volt Reference
7	PU	486	TP Sensor 2 Signal
8	GY	2704	5-Volt Reference
9	L-BU/BK	1688	5-Volt Reference
10-16	-	-	Not Used
17	YE	573	Crankshaft Position Sensor Signal (1)
18	PU	574	Crankshaft Position Sensor Low Reference (1)
19	-	-	Not Used
20	OG/BK	469	CKP Sensor B Signal
21-24	-	-	Not Used
25	TN/WH	3121	HO2S Low Signal Bank 1 Sensor 2
26	BN/WH	633	Camshaft Position Signal
27-31	-	-	Not Used
32	TN/WH	3111	HO2S Low Reference Bank 1 Sensor 1
33	TN	1744	Fuel Injector 1 Control
34	-	-	Not Used
35	YE	410	ECT Sensor Signal
36	TN/WH	1704	Low Reference
37	L-GN	432	MAP Sensor Signal
38	-	-	Not Used
39	TN	2752	Low Reference
40	WH	423	IC Timing Control
41	YE	492	MAF Sensor Signal
42	-	-	Not Used
43	GY/WH	3122	HO2S Heater Low Control Sensor 1
44	-	-	Not Used
45	GY	23	Generator Field Duty Cycle Signal
46	PU	3120	HO2S High Signal Sensor 2
47	-	-	Not Used
48	PU/WH	3110	HO2S Reference Voltage Sensor 1
49-50	-	-	Not Used
51	TN	472	IAT Sensor Signal
52	TN	2761	Low Reference
53	PK/BK	1746	Fuel Injector 3 Control
54	L-GN/BK	1745	Fuel Injector 2 Control
55	L-BU/BK	844	Fuel Injector 4 Control
56-57	-	-	Not Used
58	GY/WH	3113	HO2S Heater Low Control Sensor 1
59	OG	406	IC Timing Control B
60-63	-	-	Not Used
64	TN/BK	2760	Low Reference
65	BN	582	TAC Motor Control 2
66	YE	581	TAC Motor Control 1
67	-	-	Not Used
68	D-BU	496	Knock Sensor Signal
69	GY	1716	Low Reference
70-72	-	-	Not Used
73	BK/WH	451	Ground

Powertrain Control Module (PCM) C3 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15430209 56-Way F Micro 64 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	GY	773	Transmission Range Switch Signal C
3-5	-	-	Not Used
6	OG/BK	1228	PC Solenoid Valve High Control (Sol. A)
7	YE/BK	1227	TFT Sensor Signal
8-10	-	-	Not Used
11	OG/BK	1230	AT ISS High Signal
12-14	-	-	Not Used
15	TN/BK	231	Oil Pressure Switch Signal
16	-	-	Not Used
17	TN	2762	Low Reference
18-19	-	-	Not Used
20	TN/WH	771	Transmission Range Switch Signal A
21-28	-	-	Not Used
29	YE	657	Transmission Fluid Pressure Sensor Signal
30	OG	1226	Transmission Fluid Pressure Switch Signal C
31-32	-	-	Not Used
33	L-GN	1222	Shift Solenoid Valve 1 High Control
34	-	-	Not Used
35	YE/BK	1223	Shift Solenoid Valve 2 High Control
36	-	-	Not Used
37	D-GN/WH	428	EVAP Canister Purge Solenoid Control
39	BN	418	TCC PWM Solenoid Valve Control
40-42	-	-	Not Used
43	D-BU	1225	Transmission Fluid Pressure Switch Signal B
44	PU	401	Vehicle Speed Sensor Low Reference
45	YE	400	Vehicle Speed Sensor Signal
46-47	-	-	Not Used
48	L-BU/WH	1229	PC Solenoid Valve Low Control (Sol. A)
49	D-BU/WH	1231	A/T ISS Low Signal
50	YE	772	Transmission Range Switch Signal B
51	-	-	Not Used
52	WH	776	Transmission Range Switch Signal P
53-56	-	-	Not Used