Powertrain Control Module (PCM) Connector End Views

WARNING: This page is about a different car, the 2004 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

PCM C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357147 56-Way F Micro 64 (BLU)
Pin	Wire Color	Circuit No.	Function
1-2	-	-	Not Used
3	BRN	436	AIR Pump Relay Control
4	DK BLU	473	High Speed Cooling Fan Relay Control
5-7	-	-	Not Used
8	DK GRN/ WHT	817	Vehicle Speed Signal
9-10	-	-	Not Used
11	RED/BLK	380	A/C Refrigerant Pressure Sensor Signal
12	PPL	1589	Fuel Level Sensor Signal - Primary
13-14	-	-	Not Used
15-16	PPL	1807	Class 2 Serial Data (Primary)
17	-	-	Not Used
18	WHT	1310	EVAP Canister Vent Solenoid Control
19	PNK	39	Ignition 1 Voltage
20	ORN	240	Battery Positive Voltage
21	-	-	Not Used
22	DK GRN	83	Cruise Control Inhibit Signal
23	WHT	121	Engine Speed Signal
24-30	-	-	Not Used
31	GRY	2709	5-Volt Reference
32	BLK	2751	Low Reference
33-34	-	-	Not Used
35	BLK	2759	Low Reference
36-37	-	-	Not Used
38	WHT	1390	Off/Run/Crank Voltage
39	GRY	847	Extended Travel Brake Switch Signal
40	-	-	Not Used
41	DK GRN	890	Fuel Tank Pressure Sensor Signal
42	-	-	Not Used
43	GRY	2700	5-Volt Reference
44	DK GRN/ WHT	465	Fuel Pump Relay Control - Primary
45	YEL	447	Starter Relay Coil Control
46	DK GRN	335	Low Speed Cooling Fan Relay Control
47	-	-	Not Used
48	LT BLU/BLK	396	Cruise Control Engaged Signal
49-50	-	-	Not Used
51	PPL	420	TCC Brake Switch/Cruise Control Release Signal
52	YEL	5	Crank Voltage
53	PNK/ WHT	1101	Damping Lift/Dive Signal
54	-	-	Not Used
55	BRN/ WHT	419	MIL Control
56	DK GRN/ WHT	459	A/C Compressor Clutch Relay Control

PCM C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357131 73-Way F Micro 64 (BLK)
Pin	Wire Color	Circuit No.	Function
1	BRN	1174	Oil Level Switch Signal
2	RED	1676	EGR Solenoid High Control
3	PPL/WHT	421	Rear AIR pump Relay Control
4	-	-	Not Used
5	TAN/ WHT	3111	HO2S Low Signal (Bank 1 Sensor 1)
6	GRY	2702	5-Volt Reference
7	-	-	Not Used
8	GRY	2701	5-Volt Reference
9	GRY	435	EGR Solenoid Low Control or EGR Solenoid Control
10	RED	225	Generator Turn On Signal
11	LT BLU	1876	Knock Sensor 2 Signal
12	GRY	23	Generator Field Duty Cycle Signal
13	GRY	1716	Knock Sensor 1 (KS1) Low Reference
14	-	-	Not Used
15	PPL	3120	HO2S High Signal (Bank 1 Sensor 2)
16	BRN	1456	EGR Valve Position Signal
17	LT GRN/ WHT	1749	IAC Coil B High Control
18	YEL	410	ECT Sensor Signal
19	DK BLU	496	Knock Sensor 1 Signal
20	TAN/ WHT	3121	HO2S Low Signal (Bank 1 Sensor 2)
21	PNK/BLK	632	Low Reference
22	DK BLU	417	TP Sensor Signal
23	PPL	2121	IC 1 Control
24	LT BLU/WHT	2126	IC 6 Control
25	ORN	1799	High Resolution Signal
26	-	-	Not Used
27	GRY	2303	Low Reference Knock Sensor 2 (KS2)
28	YEL/BLK	573	Crank Sensor B Signal
29	PPL/WHT	3110	HO2S High Signal (Bank 1 Sensor 1)
30	GRY	2704	5-Volt Reference (MAP)
31	LT BLU/WHT	1800	Crank Sensor A Signal
32	-	-	Not Used
33	BLK	2761	Low Reference (Coolant Sensor)
34	RED	2127	IC 7 Control
35	BLK	2753	Low Reference (EGR)
36	ORN/BLK	469	Low Reference (MAP)
37	BLK	2752	Low Reference (TPS)
38	-	-	Not Used
39	BRN	2129	Low Reference (EST Bank 1)
40	-	-	Not Used
41	YEL/BLK	1868	Low Reference
42	BRN/ WHT	2130	Low Reference (EST Bank 2)
43	LT BLU	2123	IC 3 Control
44-45	-	-	Not Used
46	YEL	2868	Low Reference (Crank Return)
47	TAN/BLK	231	Oil Pressure Switch Signal
48	-	-	Not Used
49	RED	631	12-Volt Reference
50	LT GRN	1867	12-Volt Reference
51	LT GRN	2867	12-Volt Reference
52	-	-	Not Used
53	LT BLU/BLK	1748	IAC Coil A Low Control
54	BLK/WHT	3113	HO2S Heater Low Control (Bank 1 Sensor 1)
55	BLK/WHT	845	Fuel Injector 5 Control
56	BRN	3122	HO2S Heater Low Control (Bank 1 Sensor 2)
57	DK BLU/WHT	878	Fuel Injector 8 Control
58	LT GRN/BLK	444	IAC Coil B Low Control
59	LT BLU/BLK	844	Fuel Injector 4 Control
60	YEL/BLK	846	Fuel Injector 6 Control
61	LT BLU/WHT	1747	IAC Coil A High Control
62	DK GRN/WHT	2124	IC 4 Control
63	PPL/WHT	2128	IC 8 Control
64	DK GRN	2125	IC 5 Control
65	RED/WHT	2122	IC 2 Control
66	PNK/BLK	1746	Fuel Injector 3 Control
67	LT GRN	432	MAP Sensor Signal
68	-	-	Not Used
69	RED/BLK	877	Fuel Injector 7 Control
70	DK GRN/WHT	428	EVAP Canister Purge Solenoid Control
71	BLK	1744	Fuel Injector 1 Control
72	LT GRN	1745	Fuel Injector 2 Control
73	BLK	451	Ground

PCM C3 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357148 56-Way F Micro 64 (GRY)
Pin	Wire Color	Circuit No.	Function
1	PNK	1224	Transmission Fluid Pressure Switch Signal A
2	YEL/BLK	1223	2-3 Shift Solenoid or Shift Solenoid B Valve Control
3	LT BLU/WHT	1229	PC Solenoid Valve Low Control (Sol. A)
4	TAN/BLK	464	Delivered Torque Signal
5	YEL	772	Transmission Range Switch Signal B
6	GRY	773	Transmission Range Switch Signal C
7	WHT	776	Transmission Range Switch Signal P
8	-	-	Not Used
9	-	-	Not Used
10	YEL/BLK	1227	TFT Sensor Signal
11	YEL	492	MAF Sensor Signal
12-15	-	-	Not Used
16	LT GRN	3212	HO2S Heater Low Control (Bank 2 Sensor 1)
17-18	-	-	Not Used
19	TAN/ WHT	3211	HO2S Low Signal (Bank 2 Sensor 1)
20-21	-	-	Not Used
22	PPL	401	Signal Low - Front/VSS Low Signal/OSS Low Signal
23-26	-	-	Not Used
27	ORN/BLK	463	Requested Torque Signal
28-31	-	-	Not Used
32	BLK/WHT	771	Transmission Range Switch Signal A
33	DK BLU/WHT	1231	AT ISS Low Signal
34	BLK	2760	Low Reference (IAT)
35	BLK	2762	Low Reference (Trans Fluid Temp Sensor)
36-42	-	-	Not Used
43	PPL/WHT	3210	HO2S High Signal (Bank 2 Sensor 1)
44	LT GRN	1222	Valve Control (1-2 Shift Solenoid or Shift Solenoid A)
45	RED/BLK	1228	PC Solenoid Valve High Control (Sol. A)
46	-	-	Not Used
47	YEL	400	Signal High - Front/VSS High Signal/OSS High Signal
48	RED	1226	Transmission Fluid Pressure Switch Signal C
49-50	-	-	Not Used
51	TAN	472	IAT Sensor Signal
52-53	-	-	Not Used
54	RED/BLK	1230	AT ISS High Signal
55	TAN/BLK	422	TCC Solenoid Valve Control
56	-	-	Not Used