Powertrain Control Module (PCM) C2 (3.4L) Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191111 80-Way F Micro-Pack 100 Series, Sealed (CLR)
Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	WHT	1310	EVAP Canister Vent Solenoid Control
3	DK GRN/WHT	465	Fuel Pump Relay Control
4	RED	1676	EGR Solenoid High Control
5	BRN/WHT	419	MIL Control
6	-	-	Not Used
7	LT BLU/WHT	1747	IAC Coil A High Control
8-9	-	-	Not Used
10	PPL	412	HO2S High Signal Sensor 1
11	PPL/WHT	1668	HO2S High Signal Bank 1 Sensor 2
12-15	-	-	Not Used
16	WHT	776	Transmission Range Switch Signal P
17	RED	1226	Transmission Fluid Pressure Switch Signal C
18	BLK/WHT	771	Transmission Range Switch Signal A
19	TAN/BLK	231	Oil Pressure Switch Signal
20-22	-	-	Not Used
23	- PPL	806	- Crank Voltage
24	PNK	639	Ignition 1 Voltage
25	LT GRN	432	MAP Sensor Signal
26	YEL	410	ECT Sensor Signal
27	RED/BLK	380	A/C Refrigerant Pressure Sensor Signal
28	BRN	1456	EGR Valve Position Signal
29	-	-	Not Used
30	BRN/WHT	2702	5-Volt Reference
31	-	-	Not Used
32	GRY	2709	5-Volt Reference
33	GRY/BLK	2701	5-Volt Reference
34	GRY	2700	5-Volt Reference
35	BLK	2759	Low Reference
36	-	-	Not Used
37	BLK/WHT	3113	HO2S Heater Low Control Bank 1 Sensor 1
38	-	-	Not Used
39	DK GRN/WHT	459	A/C Compressor Clutch Relay Control
40-41	-	-	Not Used
42	LT BLU/BLK	844	Fuel Injector 4 Control
43	-	-	Not Used
44	LT BLU/BLK	1748	IAC Coil A Low Control
45	RED/BLK	1228	PC Solenoid Valve High Control (Sol. A)
46	LT BLU/WHT	1229	PC Solenoid Valve Low Control (Sol. A)
47	-	-	Not Used
48	GRY/WHT	3122	HO2S Heater Low Control Bank 1 Sensor 2
49	LT GRN/BLK	444	IAC Coil B Low Control
50	TAN	472	IAT Sensor Signal
51-54	-	-	Not Used
55	DK GRN	890	Fuel Tank Pressure Sensor Signal
56	GRY	773	Transmission Range Switch Signal C
57	DK BLU	1225	Transmission Fluid Pressure Switch Signal B
58	-	-	Not Used
59	LT BLU/BLK	396	Cruise Control Engaged Signal
60	-	-	Not Used
61	RED	225	Generator Turn On Signal
62	-	-	Not Used
63	YEL	657	TCC Release Switch Signal
64-65	-	-	Not Used
66	DK BLU	417	TP Sensor Signal
67	-	-	Not Used
68	YEL/BLK	1227	TFT Sensor Signal
69	PPL	1589	Fuel Level Sensor Signal
70	RED/WHT	812	12-Volt Reference
71	-	-	Not Used
72	RED/WHT	812	12-Volt Reference
73	BLK	407	Low Reference
74	BLK	407	Low Reference
75	-	-	Not Used
76	YEL	447	Starter Relay Coil Control
77	-	-	Not Used
78	BRN	418	TCC PWM Solenoid Valve Control
79-80	-	-	Not Used