Powertrain Control Module (PCM) Connector End Views

Powertrain Control Module (PCM) Connector C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191110 80-Way F Micro-Pack 100W Series, Sealed (BLU)
Pin	Wire Color	Circuit No.	Function
1	BLK	2762	Low Reference
2-3	-	-	Not Used
4	LT GRN	1222	1-2 Shift Solenoid Valve Control
5	DK BLU	473	High Speed Cooling Fan Relay Control
6	DK GRN	335	Low Speed Cooling Fan Relay Control
7	BLK	630	Camshaft Position Signal
8	PPL/WHT	430	Low Resolution Engine Speed Signal
9	LT BLU/BLK	647	Medium Resolution Engine Speed Signal
10	GRY	2704	5-Volt Reference
11	-	-	Not Used
12	BLK	808	Low Reference
13	ORN/BLK	469	Low Reference
14-15	-	-	Not Used
16	BLK/WHT	451	Ground
17	BLK	2760	Low Reference
18	-	-	Not Used
19	PPL	1500	Ignition 0 Voltage
20	ORN	540	Battery Positive Voltage
21-27	-	-	Not Used
28	BLK	808	HO2S Low Signal
29	BLK	808	HO2S Low Signal
30	PPL	420	TCC Brake Switch/Cruise Control Release Signal
31	BLK	2753	Low Reference
32	GRY	435	EGR Solenoid Low Control
33	DK BLU	496	KS 1 Signal
34	LT BLU	1876	Knock Sensor 2 Signal
35-37	-	-	Not Used
38	LT GRN/WHT	1749	IAC Coil B High Control
39-42	-	-	Not Used
43	YEL/BLK	846	Fuel Injector 6 Control
44	YEL/BLK	1223	2-3 Shift Solenoid Valve Control
45	-	-	Not Used
46	LT BLU/BLK	844	Fuel Injector 4 Control
47	BLK/WHT	845	Fuel Injector 5 Control
48	RED/BLK	453	Low Reference
49-52	-	-	Not Used
53	TAN/BLK	424	IC Timing Signal
54	WHT	423	IC Timing Control
55	DK GRN/WHT	817	Vehicle Speed Signal
56	BLK/WHT	451	Ground
57	BLK/WHT	451	Ground
58	DK GRN	1049	PCM Class 2 Serial Data
59	-	-	Not Used
60	BLK/WHT	451	Ground
61	BLK	2752	Low Reference
62	DK BLU/WHT	1231	AT ISS Low Signal
63	RED/BLK	1230	AT ISS High Signal
64	YEL	400	Signal High-Front
65	PPL	401	Signal Low-Front
66-67	-	-	Not Used
68	YEL	772	Transmission Range Signal B
69	YEL	492	MAF Sensor Signal
70	-	-	Not Used
71	ORN/BLK	463	Requested Torque Signal (67)
71	-	-	Not Used (L36)
72	DK GRN	83	Cruise Control Inhibit Signal
73	LT GRN/BLK	1745	Fuel Injector 2 Control
74-75	-	-	Not Used
76	DK GRN/WHT	428	EVAP Canister Purge Solenoid Valve Control
77-78	-	-	Not Used
79	BLK	1744	Fuel Injector 1 Control
80	BLK	2751	Low Reference

Powertrain Control Module (PCM) Connector C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191110 80-Way F Micro-Pack 100W Series, Sealed (CLR)
Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	WHT	1310	EVAP Canister Vent Solenoid Valve Control
3	DK GRN/WHT	465	Fuel Pump Relay Control
4	WHT	257	EGR Solenoid High Control
5	BRN/WHT	419	MIL Control
6	-	-	Not Used
7	LT BLU/WHT	1747	IAC Coil A High Control
8	-	-	Not Used
9	TAN/BLK	464	Delivered Torque Signal (L67)
9	-	-	Not Used (L36)
10	PPL	412	HO2S High Signal
11	PPL/WHT	1668	HO2S High Signal
12-15	-	-	Not Used
16	WHT	776	Transmission Range Signal P
17	-	-	Not Used
18	BLK/WHT	771	Transmission Range Signal A
19	TAN/BLK	231	Oil Pressure Switch Signal
20 -21	-	-	Not Used
22	DK GRN/WHT	762	A/C Request Signal
23	PPL	806	Crank Voltage
24	PNK	439	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	GRY/BLK	2702	5-Volt Reference
31-32	-	-	Not Used
33	GRY	2701	5-Volt Reference
34	GRY	474	5-Volt Reference
35	BLK	452	Low Reference
36	-	-	Not Used
37	BLK/WHT	3113	HO2S Heater Low Control
38	-	-	Not Used
39	DK GRN/WHT	459	A/C Compressor Clutch Relay Control
40-41	-	-	Not Used
42	PNK/BLK	1746	Fuel Injector 3 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	BRN	3122	HO2S Heater Low Control
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 Signal C
57	-	-	Not Used
58	BRN	1174	Oil Level Switch Signal
59	WHT	85	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 - Primary
70-75	-	-	Not Used
76	YEL/BLK	625	Starter Enable Relay Control
77	GRY	1724	Boost Control Solenoid Control (l67)
77	-	-	Not Used (L36)
78	BRN	418	TCC PWM Solenoid Valve Control
79-80	-	-	Not Used