Powertrain Control Module (PCM) Connector End Views

Powertrain Control Module (PCM) C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15359378 56-Way F Micro 64 Series Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1-3	-	-	Not Available
4	L-BU	20	Stop Lamp Switch Signal (A/T)
5	-	-	Not Available
6	TN/BK	464	Delivered Torque Signal (ABS)
7	GY	720	Low Reference
8-10	-	-	Not Available
11	BK	2759	Low Reference
12-14	-	-	Not Available
15	PU	1807	Class 2 Serial Data
16	PU	1807	Class 2 Serial Data
17	-	-	Not Available
18	PU	1500	Ignition 0 Voltage
19	PK	839	Ignition 1 Voltage
20	OG	480	Battery Positive Voltage
21	TN	472	IAT Sensor Signal
22	PU	30	Fuel Level Sensor Signal
23	GY	596	5-Volt Reference
24	-	-	Not Available
25	GY	2709	5-Volt Reference
26-29	-	-	Not Available
30	D-BU	473	High Speed Cooling Fan Signal
31	-	-	Not Used
32	WH	121	Engine Speed Signal (ABS)
33	-	-	Not Available
34	D-GN/WH	817	Vehicle Speed Signal
35	OG/BK	463	Requested Torque Signal (ABS)
36	-	-	Not Available
37	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
38	-	-	Not Available
39	D-GN	890	Fuel Tank Pressure Sensor Signal
40-42	-	-	Not Available
43	D-GN	335	Low Speed Cooling Fan Signal
44	-	-	Not Available
45	WH	1310	EVAP Canister Vent Solenoid Control
46	D-GN/WH	465	Fuel Pump Relay Control
47	D-GN/WH	459	A/C Compressor Clutch Relay Control
48	-	-	Not Available
49	D-GN	83	Cruise Control Inhibit Signal
50	-	-	Not Available
51	BK	552	Low Reference
52-56	-	-	Not Available

Powertrain Control Module (PCM) C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15359382 73-Way F Micro 64/GT 280 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	L-BU/BK	1748	IAC Coil A Low Control
2	L-BU/WH	1747	IAC Coil A High Control
3-4	-	-	Not Available
5	D-GN/WH	428	EVAP Canister Purge Solenoid Control
6	RD/BK	1228	PC Solenoid Valve High Control
7	L-BU/WH	1229	PC Solenoid Valve Low Control
8	-	-	Not Available
9	-	-	Not Used
10	L-GN	1222	1-2 Shift Solenoid Valve Control
11	YE/BK	1223	2-3 Shift Solenoid Valve Control
12	BN	418	TCC PWM Solenoid Valve Control
13	PU/WH	1668	HO2S High Signal
14	TN/WH	1669	HO2S Low Signal
15	TN	1667	HO2S Low Signal
16	PU	1666	HO2S High Signal
17	L-GN/WH	1749	IAC Coil B High Control
18	L-GN/BK	444	IAC Coil B Low Control
19	WH	423	IC Timing Control
20	OG	406	IC Timing Control [B]
21-25	-	-	Not Available
26	BN/WH	633	Camshaft Position Signal
27	YE	573	CKP Sensor Signal
28	PU	574	Low Reference
29	L-GN	432	MAP Sensor Signal
30	-	-	Not Available
31	D-BU	417	TP Sensor Signal
32-33	-	-	Not Available
34	WH	776	Transmission Range Switch Signal P
35	GY	773	Transmission Range Switch Signal C
36	YE	772	Transmission Range Switch Signal B
37	BK/WH	771	Transmission Range Switch Signal A
38	BK	514	Ground
39	BK	2761	Low Reference
40	BK	407	Low Reference
41	D-BU/WH	1231	AT ISS Low Signal
42	PU	401	VSS Low Signal
43	-	-	Not Available
44	GY	1716	Low Reference
45	OG/BK	469	Low Reference
46	-	-	Not Available
47	BK	2752	Low Reference
48	-	-	Not Available
49	GY	23	Generator Field Duty Cycle Signal
50	RD	225	Generator Turn On Signal
51	BK	1744	Fuel Injector 1 Control
52	L-GN/BK	1745	Fuel Injector 2 Control
53	L-BU/BK	396	Cruise Control Engaged Signal
54	TN/WH	231	Oil Pressure Switch Signal
55	-	-	Not Used
56	D-BU	1225	Transmission Fluid Pressure Switch Signal B
57	RD	1226	Transmission Fluid Pressure Switch Signal C
58	YE	657	TCC Release Switch Signal
59	YE	410	ECT Sensor Signal
60	YE/BK	1227	TFT Sensor Signal
61	RD/BK	1230	AT ISS High Signal
62	YE	400	VSS High Signal
63	-	-	Not Available
64	D-BU	496	Knock Sensor [1] Signal
65	GY	2704	5-Volt Reference
66	-	-	Not Available
67	GY	2701	5-Volt Reference
68	-	-	Not Available
69	D-GN	676	HO2S Heater Low Control
70	BK/WH	1423	HO2S Heater Low Control
71	L-BU/BK	844	Fuel Injector 4 Control
72	PK/BK	1746	Fuel Injector 3 Control
73	BK/WH	451	Ground