PCM Connector C1 Connector End View

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