Powertrain Control Module (PCM) Connectors

Powertrain Control Module (PCM) - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191489 80-Way F Micro-Pack 100W Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1	BK/WH	1551	Ground
2	L-GN	1867	12-Volt Reference
3	PK/BK	1746	Fuel Injector 3 Control
4	L-GN/BK	1745	Fuel Injector 2 Control
5-6	-	-	Not Used
7	GY	2705	5-Volt Reference A
8	GY	2701	5-Volt Reference A (w/o JL4)
9-10	-	-	Not Used
11	L-BU	1876	Knock Sensor 2 Signal
12	YE	573	CKP Sensor Signal
13	OG/BK	463	Requested Torque Signal (JL4)
14	OG/BK	1061	UART Serial Data (JL4)
15	D-BU/WH	774	UART Serial Data (JL4)
16	-	-	Not Used
17	D-BU	1225	Transmission Fluid Pressure Switch Signal B
18	OG	1226	Transmission Fluid Pressure Switch Signal C
19	PK	439	Ignition 1 Voltage
20	RD/WH	440	Battery Positive Voltage
21	PU	574	Low Reference
22	-	-	Not Used
23	TN	2759	Low Reference
24	BK/WH	1551	Ground
25	TN	1671	HO2S Low Signal - Bank 2 Sensor 2
26	TN	1667	HO2S Low Signal - Bank 2 Sensor 1
27	BK/WH	1551	Ground
28	TN/WH	1669	HO2S Low Signal - Bank 1 Sensor 2
29	TN	1664	HO2S Low Signal - Bank 1 Sensor 1
30-31	-	-	Not Used
32	TN/WH	771	Transmission Range Switch Signal A
33	PU	420	TCC Brake Switch/Cruise Control Release Signal
34	WH	776	Transmission Range Switch Signal P
35	-	-	Not Used
36	TN	1744	Fuel Injector 1 Control
37	YE/BK	846	Fuel Injector 6 Control
38	-	-	Not Used
39	YE/BK	625	Starter Enable Relay Control
40	BK/WH	1551	Ground
41-42	-	-	Not Used
43	OG/BK	877	Fuel Injector 7 Control
44	L-BU/BK	844	Fuel Injector 4 Control
45	-	-	Not Used
46	GY	2709	5-Volt Reference B
47	-	-	Not Used
48	GY	597	5-Volt Reference A
49-50	-	-	Not Used
51	D-BU	496	Knock Sensor 1 Signal
52	-	-	Not Used
53	TN	2762	Low Reference
54	OG/BK	469	Low Reference
55-56	-	-	Not Used
57	RD/WH	440	Battery Positive Voltage
58	D-GN	1049	Class 2 Serial Data
59	-	-	Not Used
60	TN	2752	Low Reference (w/o JL4)
61	PK/BK	632	Low Reference
62	-	-	Not Used
63	BK	2755	Low Reference
64	BK/WH	1551	Ground
65	PU	1670	HO2S High Signal - Bank 2 Sensor 2
66	PU	1666	HO2S High Signal - Bank 2 Sensor 1
67	BK/WH	1551	Ground
68	PU/WH	1668	HO2S High Signal - Bank 1 Sensor 2
69	PU/WH	1665	HO2S High Signal - Bank 1 Sensor 1
70	BN	1174	Oil Level Switch Signal
71	-	-	Not Used
72	YE	772	Transmission Range Switch Signal B
73	BN/WH	633	CMP Sensor Signal
74	YE	410	ECT Sensor Signal
75	PK	1020	Ignition 0 Voltage
76	TN/WH	845	Fuel Injector 5 Control
77	D-BU/WH	878	Fuel Injector 8 Control
78	-	-	Not Used
79	WH	687	3-2 Shift Solenoid Valve Control (5.3L)
80	TN	2761	Low Reference

Powertrain Control Module (PCM) - C2

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/WH	1551	Ground
2	BN	418	TCC PWM Solenoid Valve Control
3-4	-	-	Not Used
5	TN/BK	464	Delivered Torque Signal (JL4)
6	OG/BK	1228	PC Solenoid Valve High Control
7	-	-	Not Used
8	L-BU/WH	1229	PC Solenoid Valve Low Control
9	D-GN/WH	465	Fuel Pump Relay Control - Primary
10-12	-	-	Not Used
13	L-BU/BK	396	Cruise Control Engaged Signal (w/o JL4)
14	-	-	Not Used
15	OG	225	Generator Turn On Signal
16	-	-	Not Used
17	D-GN/WH	2523	A/C Request Signal (C60)
18-19	-	-	Not Used
20	PU	401	Signal Low - Front
21	YE	400	Signal High - Front
22	OG/BK	1230	AT ISS High Signal (4L80-E/4L85-E)
23	D-BU/WH	1231	AT ISS Low Signal (4L80-E/4L85-E)
24	D-BU	411	TP Sensor Signal (w/o JL4)
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	-	-	Not Used
34	D-GN/WH	428	EVAP Canister Purge Solenoid Valve Control
35-36	-	-	Not Used
37	D-GN	83	Cruise Control Inhibit Signal (w/o JL4 or Early Production JL4)
38	-	-	Not Used
39	OG	631	12-Volt Reference
40	BK/WH	1551	Ground
41	-	-	Not Used
42	TN/BK	422	TCC Solenoid Valve Control (5.3L)
43	D-GN/WH	459	A/C Compressor Clutch Relay Control (C60)
44	-	-	Not Used
45	WH	1310	EVAP Canister Vent Solenoid Valve 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	YE/BK	1827	Vehicle Speed Signal
50	D-GN/WH	817	Vehicle Speed Signal (w/o JL4)
51	YE/BK	1227	TFT Sensor Signal
52	PU	5035	HO2S Heater Low Control - Bank 1 Sensor 2
53	YE	5036	HO2S Heater Low Control - Bank 2 Sensor 2
54	PU	1589	Fuel Level Sensor Signal
55	D-GN	603	A/C Low Pressure Switch Signal (C60)
56	-	-	Not Used
57	TN	470	Low Reference
58	TN/WH	331	Oil Pressure Sensor Signal
59	PU	806	Crank Voltage
60	BN	2129	Low Reference
61	BN/WH	2130	Low Reference
62	GY	773	Transmission Range Switch Signal C
63	PK	1224	Transmission Fluid Pressure Switch Signal A
64	D-GN	890	Fuel Tank Pressure Sensor Signal
65	-	-	Not Used
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	L-BU	5038	HO2S Heater Low Control - Bank 1 Sensor 1
73	-	-	Not Used
74	PU/WH	5037	HO2S Heater Low Control - Bank 2 Sensor 1
75	GY	23	Generator Field Duty Cycle Signal
76	L-GN/WH	1749	IAC Coil B High Control (w/o JL4)
77	L-GN/BK	444	IAC Coil B Low Control (w/o JL4)
78	L-BU/BK	1748	IAC Coil A Low Control (w/o JL4)
79	L-BU/WH	1747	IAC Coil A High Control (w/o JL4)
80	-	-	Not Used