Powertrain Control Module (PCM) Connector End Views

WARNING: This page is about a different car, the 2003 Chevrolet SSR. However, it is still accessible from the selected car via links, so may be relevant.

Powertrain Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191110 80-Way F Micro-Pack 100 Series, Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1	BK	450	Ground
2	L-GN	1867	Crankshaft Position Sensor 12-Volt Reference
3	PK/BK	1746	Fuel Injector Control 3
4	L-GN/BK	1745	Fuel Injector Control 2
5-6	-	-	Not Used
7	GY	705	5-Volt Reference
8-10	-	-	Not Used
11	L-BU	1876	Knock Sensor Signal 2
12	D-BU/WH	1869	Crankshaft Position Sensor Signal
13	OG/BK	463	Requested Torque Signal
14	D-BU/WH	774	UART Serial Data Tertiary
15	OG/BK	1061	UART Serial Data Secondary
16	-	-	Not Used
17	D-BU	1225	Transmission Fluid Pressure Switch Signal Bit 2
18	RD	1226	Transmission Fluid Pressure Switch Signal Bit 3
19	PK	439	Run/Crank Ignition 1 Voltage
20	OG	440	Battery Positive Voltage
21	YE/BK	1868	Low Reference
22	-	-	Not Used
23	BK	2759	Fuel Tank Pressure Sensor Low Reference
24	BK	450	Ground
25	TN	1671	Heated Oxygen Sensor Low Signal Bank 2 Sensor 2
26	TN	1667	Heated Oxygen Sensor Low Signal Bank 2 Sensor 1
27	BK	450	Ground
28	TN/WH	1669	Heated Oxygen Sensor Low Signal Bank 1 Sensor 2
29	TN	1664	Heated Oxygen Sensor Low Signal Bank 1 Sensor 1
30-31	-	-	Not Used
32	BK/WH	771	Transmission Position Switch Bit 1 Signal
33	PU	420	Torque Converter Clutch Brake Switch Signal
34	WH	776	Transmission Position Switch Parity Bit Signal
35	-	-	Not Used
36	BK	1744	Fuel Injector Control 1
37	YE/BK	846	Fuel Injector Control 6
38	-	-	Not Used
39	YE/BK	625	Starter Enable Relay Control
40	BK	450	Ground
41	-	-	Not Used
42	D-GN	335	Low Speed Cooling Fan Relay Control
43	RD/BK	877	Fuel Injector Control 7
44	L-BU/BK	844	Fuel Injector Control 4
45	GY	2700	A/C Pressure Sensor 5-Volt Reference
46	GY	2709	Fuel Tank Pressure Sensor 5-Volt Reference
47	-	-	Not Used
48	GY	2704	Manifold Absolute Pressure Sensor 5-Volt Reference
49-50	-	-	Not Used
51	D-BU	496	Knock Sensor Signal 1
52	-	-	Not Used
53	BK	2762	Transmission Fluid Temperature Sensor Low Reference
54	OG/BK	469	Manifold Absolute Pressure Sensor Low Reference
55-56	-	-	Not Used
57	OG	440	Battery Positive Voltage
58	D-GN	1049	ECM/PCM/VCM Class 2 Serial Data
59	YE	710	Class 2 Serial Data Secondary
60	-	-	Not Used
61	PK/BK	632	Camshaft Position Sensor Low Reference
62	-	-	Not Used
63	BK	407	Sensor Low Reference
64	BK	450	Ground
65	PU	1670	Heated Oxygen Sensor High Signal Bank 2 Sensor 2
66	PU	1666	Heated Oxygen Sensor High Signal Bank 2 Sensor 1
67	BK	450	Ground
68	PU/WH	1668	Heated Oxygen Sensor High Signal Bank 1 Sensor 2
69	PU/WH	1665	Heated Oxygen Sensor High Signal Bank 1 Sensor 1
70-71	-	-	Not Used
72	YE	772	Transmission Position Switch Bit 2 Signal
73	BN/WH	633	Camshaft Position Sensor Signal
74	YE	410	Engine Coolant Temperature Sensor Signal
75	PK	1020	Off/Run/Crank Voltage
76	BK/WH	845	Fuel Injector Control 5
77	D-BU/WH	878	Fuel Injector Control 8
78	-	-	Not Used
79	WH	687	3-2 Shift Solenoid Valve Control
80	GY	720	Sensor Low Reference

Powertrain Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191110 80-Way F Micro-Pack 100 Series, Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1	BK	450	Ground
2	BN	418	Torque Converter Clutch PWM Solenoid Control
3-4	-	-	Not Used
5	TN/BK	464	Delivered Torque Signal
6	RD/BK	1228	Transmission Force Motor Supply Voltage 1
7	-	-	Not Used
8	L-BU/WH	1229	Transmission Force Motor Low Reference 1
9	D-GN/WH	465	Fuel Pump Primary Relay Control
10	WH	121	Engine Speed Signal
11-13	-	-	Not Used
14	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
15	RD	225	Generator Turn On Signal
16-17	GY/BK	1694	Four Wheel Drive Low Signal
18	D-GN	1433	Clutch Start Switch Signal
19	-	-	Not Used
20	L-GN/BK	822	Vehicle Speed Sensor Low Reference
21	PU/WH	821	Vehicle Speed Sensor Signal
22-24	-	-	Not Used
25	TN	472	Intake Air Temperature Sensor Signal
26	PU	2121	Ignition Control 1
27	RD	2127	Ignition Control 7
28	L-BU/WH	2126	Ignition Control 6
29	D-GN/WH	2124	Ignition Control 4
30	-	-	Not Used
31	YE	492	Mass Air Flow Sensor Signal
32	L-GN	432	Manifold Absolute Pressure Sensor Signal
33	D-BU	473	High Speed Cooling Fan Relay Control
34	D-GN/WH	428	EVAP Canister Purge Solenoid Control
35-38	-	-	Not Used
39	RD	631	Camshaft Sensor 12-Volt Reference
40	BK	450	Ground
41	-	-	Not Used
42	TN/BK	422	Torque Converter Clutch Solenoid Control
43	D-GN/WH	459	A/C Compressor Clutch Relay Control
44	-	-	Not Used
45	WH	1310	EVAP Canister Vent Solenoid Control
46	BN/WH	419	Check Engine Indicator Control
47	YE/BK	1223	2 Shift Solenoid Valve Control
48	D-GN	1222	1 Shift Solenoid Valve Control
49	YE/BK	1827	Vehicle Speed Signal
50	D-GN/WH	817	Vehicle Speed Signal
51	YE/BK	1227	Transmission Temperature Sensor Signal
52	BN	2391	HO2S Heater Low Control Bank 1 Sensor 2
53	RD/WH	3223	Heated Oxygen Sensor Heater Low Control Bank 2 Sensor 2
54	PU/WH	1589	Primary Fuel Level Sensor Signal
55-56	-	-	Not Used
57	BK	2760	Intake Air Temperature Sensor Low Reference
58	TN/WH	332	Oil Pressure Sensor Signal
59	PU	806	Crank Voltage
60	BN	2129	Ignition Control Low Reference Bank 1
61	BN/WH	2130	Ignition Control Low Reference Bank 2
62	GY	773	Transmission Position Switch Bit 3 Signal
63	PK	1224	Transmission Fluid Pressure Switch Signal Bit 1
64	D-GN	890	Fuel Tank Pressure Sensor Signal
65	-	-	Not Used
66	PU	2128	Ignition Control 8
67	RD/WH	2122	Ignition Control 2
68	D-GN	2125	Ignition Control 5
69	L-BU	2123	Ignition Control 3
70-71	-	-	Not Used
72	BK/WH	3113	Heated Oxygen Sensor Heater Low Control Bank 1 Sensor 1
73	-	-	Not Used
74	L-GN	3212	Heated Oxygen Sensor Heater Low Control Bank 2 Sensor 1
75	GY	23	Generator Field Duty Cycle Signal
76-79	-	-	Not Used
80	BK	2751	Signal Ground