Powertrain Control Module (PCM) Connector End Views

PCM Connector C1 Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PCM Connector C1 92231110 80-Way Micro-Pack 100W Series Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1	BK/RD	450	Ground
2	L-BU/WH	2867	12-Volt Reference - CKP Sensor
3	PU	1746	Fuel Injector 3 Control
4	GN	1745	Fuel Injector 2 Control
5-6	-	-	Not Used
7	BU/YE	596	5-Volt Reference - EOP Sensor
8	GY	2701	5-Volt Reference - TP Sensor
9-10	-	-	Not Used
11	L-BU	1876	KS 2 Signal
12	L-BU	573	CKP Sensor Signal
13-16	-	-	Not Used
17	YE	1225	Transmission Fluid Pressure Switch Signal B
18	GY	1226	Transmission Fluid Pressure Switch Signal C
19	OG	300	Ignition 3 Voltage
20	OG	740	Battery Positive Voltage
21	L-BU/BK	574	Low Reference - CKP Sensor
22	-	-	Not Used
23	BK	2759	Low Reference - FTP Sensor and Fuel Level Sensor
24	BK/RD	450	Ground
25	TN	1671	HO2S Low Signal Bank 2 Sensor 2
26	GY/BK	1667	HO2S Low Signal Bank 2 Sensor 1
27	BK/RD	450	Ground
28	TN/WH	1669	HO2S Low Signal Bank 1 Sensor 2
29	BU/BK	1664	HO2S Low Signal Bank 1 Sensor 1
30	GN	68	Engine Coolant Level Signal
31	-	-	Not Used
32	BU/WH	771	Transmission Range Switch Signal A
33	BN	86	Cruise Control Release Signal
34	WH	776	Transmission Range Switch Signal P
35	-	-	Not Used
36	BU	1744	Fuel Injector 1 Control
37	YE	846	Fuel Injector 6 Control
38-39	-	-	Not Used
40	BK/RD	450	Ground
41-42	-	-	Not Used
43	PK/BK	877	Fuel Injector 7 Control
44	BN/YE	844	Fuel Injector 4 Control
45	PU/WH	2700	5-Volt Reference - A/C Refrigerant Pressure Sensor
46	GY	2709	5-Volt Reference - FTP Sensor
47	-	-	Not Used
48	PU/WH	2704	5-Volt Reference - MAP Sensor
49-50	-	-	Not Used
51	BU	496	KS 1 Signal
52	-	-	Not Used
53	BK/WH	2762	Low Reference - TFT Sensor
54	BK	469	Low Reference - MAP Sensor
55-56	-	-	Not Used
57	OG	740	Battery Positive Voltage
58	YE	1045	RFA Class 2 Serial Data
59	-	-	Not Used
60	BK/YE	2752	Low Reference - TP Sensor
61	RD/WH	632	Low Reference - CMP Sensor
62	-	-	Not Used
63	GN	470	Low Reference - EOP Sensor
64	BK/RD	450	Ground
65	PU/BK	1670	HO2S High Signal Bank 2 Sensor 2
66	GY	1666	HO2S High Signal Bank 2 Sensor 1
67	BK/RD	450	Ground
68	PU/WH	1668	HO2S High Signal Bank 1 Sensor 2
69	PU	1665	HO2S High Signal Bank 1 Sensor 1
70-71	-	-	Not Used
72	YE/RD	772	Transmission Range Switch Signal B
73	BN	633	Camshaft Position Signal
74	YE	410	ECT Sensor Signal
75	-	-	Not Used
76	GY	845	Fuel Injector 5 Control
77	L-GN	878	Fuel Injector 8 Control
78	-	-	Not Used
79	GN/WH or GY	898 or 587	Shift Solenoid Valve 3 High Control - Skip/Shift Solenoid Control
80	GY/BK	2761	Low Reference - ECT Sensor

PCM Connector C2 Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PCM Connector C2 92231110 80-Way Micro-Pack 100W Series Sealed (GN)
Pin	Wire Color	Circuit No.	Function
1	BK/RD	450	Ground
2	BN	418	TCC PWM Solenoid Valve Control
3-5	-	-	Not Used
6	RD	1228	PC Solenoid Valve High Control Sol.A
7	-	-	Not Used
8	GY/BU	1229	PC Solenoid Valve Low Control Sol.A
9	GN/WH	465	Fuel Pump Relay Control Primary
10	BN	121	Engine Speed Signal - Tachometer
11	-	-	Not Used
12	GY/BK	1687	Ignition Retard Signal, from EBCM
13	-	-	Not Used
14	GN/BK	380	A/C Refrigerant Pressure Sensor Signal
15-17	-	-	Not Used
18	GN	59	A/C Compressor Clutch Supply Voltage
19	-	-	Not Used
20	TN	1231	AT ISS Low Signal
21	BU/WH	1230	AT ISS High Signal
22-23	-	-	Not Used
24	BU	411	TP Sensor Signal
25	BN	472	IAT Sensor Signal
26	WH	2121	IC 1 Control
27	YE	2127	IC 7 Control
28	L-GN	2126	IC 6 Control
29	WH	2124	IC 4 Control
30	-	-	Not Used
31	BN/WH	492	MAF Sensor Signal
32	L-GN	432	MAP Sensor Signal
33	BU/WH	473	High Speed Cooling Fan Relay Control
34	GN/YE	428	EVAP Canister Purge Solenoid Control
35-38	-	-	Not Used
39	WH/BK	631	12-Volt Reference - CMP Sensor
40	BK/RD	450	Ground
41	-	-	Not Used
42	GY/RD	422	TCC Solenoid Valve Control
43	L-GN/BK	459	A/C Clutch Relay Control
44	YE	1652	Reverse Lock Out Solenoid Control
45	WH	1310	EVAP Canister Vent Solenoid Control
46	BN/WH	419	MIL Control
47	YE/BK	1223	2-3 Shift Solenoid Valve Control
48	L-GN	1222	1-2 Shift Solenoid Valve Control
49	-	-	Not Used
50	PU/WH	5197	VSS Signal
51	YE/BK	1227	TFT Sensor Signal
52	L-BU	1150	HO2S Bank 1 Sensor 2 Heater Control
53	RD/WH	1350	HO2S Bank 2 Sensor 2 Heater Control
54	PU	30	Fuel Level Sensor Signal
55-56	-	-	Not Used
57	GN/OG	5514	Low Reference - IAT Sensor and A/C Refrigerant Pressure Sensor
58	BN/WH	331	Engine Oil Pressure (EOP) Sensor Signal
59	-	-	Not Used
60	BN	2129	Low Reference - Ignition Coils Bank 1
61	PU	2130	Low Reference - Ignition Coils Bank 2
62	GY	773	Transmission Range Switch Signal C
63	BN/YE	1224	Transmission Fluid Pressure Switch Signal A
64	D-GN	890	Fuel Tank Pressure (FTP) Sensor Signal
65	-	-	Not Used
66	L-BU	2128	IC 8 Control
67	YE/BK	2122	IC 2 Control
68	GN	2125	IC 5 Control
69	BU	2123	IC 3 Control
70-71	-	-	Not Used
72	BK/WH	1050	HO2S Bank 1 Sensor 1 Heater Control
73	-	-	Not Used
74	L-GN/RD	1250	HO2S Bank 2 Sensor 1 Heater Control
75	-	-	Not Used
76	L-GN/WH	1749	IAC Coil B High Control
77	L-GN/BK	444	IAC Coil B Low Control
78	L-BU/BK	1748	IAC Coil A Low Control
79	L-BU	1747	IAC Coil A High Control
80	-	-	Not Used