Powertrain Control Module (PCM) Connector End View - C2 (5.7L)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191488 80-Way F Micro-Pack 100W Sealed (GN)
Pin	Wire Color	Circuit No.	Function
1	BK	750	Ground
2-4	-	-	Not Used
5	TN/BK	464	Delivered Torque Signal
6-8	-	-	Not Used
9	D-GN/WH	465	Fuel Pump Relay Control
10	WH	121	Engine Speed Signal
11-13	-	-	Not Used
14	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
15	OG	225	Generator Turn On Signal
16-17	-	-	Not Used
18	PU/WH	1035	Starter Relay Coil Supply Voltage
19	-	-	Not Used
20	L-GN/BK	822	VSS Low Signal
21	PU/WH	821	VSS High Signal
22-24	-	-	Not Used
25	TN	472	IAT Sensor Signal
26	PU	2121	IC 1 Control
27	OG	2127	IC 7 Control
28	L-BU/WH	2126	IC 6 Control
29	D-GN/WH	2124	IC 4 Control
30	-	-	Not Used
31	YE	492	MAF Sensor Signal
32	L-GN	432	MAP 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	OG	631	12-Volt Reference
40	BK	750	Ground
41-42	-	-	Not Used
43	D-GN/WH	459	A/C Compressor Clutch Relay Control
44	L-GN	1652	Reverse Lockout Solenoid Control
45	WH	1310	EVAP Canister Vent Solenoid Control
46	BN/WH	419	MIL Control
47	WH	375	Skip Shift Indicator Control
48-49	-	-	Not Used
50	BN	818	Vehicle Speed Signal
51	YE/BK	1227	TFT Sensor Signal
52	BN	2391	HO2S Heater Low Control - Bank 1 Sensor 2
53	OG/WH	3223	HO2S Heater Low Control - Bank 2 Sensor 2
54	D-BU	1936	Fuel Level Sensor Signal - Primary
55-56	-	-	Not Used
57	TN	552	Low Reference
58	TN/WH	331	Oil Pressure Sensor Signal
59	YE	5	Crank Voltage
60	BN	2129	Low Reference
61	BN/WH	2130	Low Reference
62-63	-	-	Not Used
64	D-GN	890	Fuel Tank Pressure Sensor Signal
65	BN	5069	MAIN Relay Control
66	PU/WH	2128	IC 8 Control
67	OG/WH	2122	IC 2 Control
68	D-GN	2125	IC 5 Control
69	L-BU	2123	IC 3 Control
70-71	-	-	Not Used
72	GY/WH	3113	HO2S Heater Low Control - Bank 1 Sensor 1
73	L-BU	1937	Fuel Level Sensor Signal - Secondary
74	L-GN	3212	HO2S Heater Low Control - Bank 2 Sensor 1
75	GY	23	Generator Field Duty Cycle Signal
76-79	-	-	Not Used
80	TN	5514	Low Reference