Powertrain Control Module (PCM) Connectors

WARNING: This page is about a different car, the 2005 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Powertrain Control Module (PCM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15430208 56-Way F Micro-Pack 64 Series Sealed (BU)
Pin	Wire Color	Circuit No.	Function
1	TN/BK	2500	High Speed GMLAN Serial Data Bus+
2	TN	2501	High Speed GMLAN Serial Data Bus-
3	-	-	Not Used
4	GY	2700	5-Volt Reference B
5	-	-	Not Used
6	BN/WH	419	MIL Control
7	TN	5514	Low Reference
8	OG/BK	1057	Low Reference
9	-	-	Not Used
10	WH	1310	EVAP Canister Vent Solenoid Control
11	-	-	Not Used
12	OG/BK	1057	Low Reference
13-14	-	-	Not Used
15	PU	1807	Class 2 Serial Data (Primary)
16-17	-	-	Not Used
18	BN	4	Accessory Voltage
19	PK	639	Ignition 1 Voltage
20	RD/WH	540	Battery Positive Voltage
21	-	-	Not Used
22	BN	818	Vehicle Speed Signal
23	YE	447	Starter Relay Coil Control
24	BN	5069	Main Relay Control
25	-	-	Not Used
26	D-GN	890	Fuel Tank Pressure Sensor Signal
27-30	-	-	Not Used
31	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
32	WH	17	Stop Lamp Switch Signal
33	D-GN/WH	459	A/C Compressor Clutch Relay Control
34-36	-	-	Not Used
37	D-GN/WH	465	Fuel Pump Relay Control High
38-42	-	-	Not Used
43	PU	1589	Fuel Level Sensor Signal
44	-	-	Not Used
45	PU	5526	Tap Up/Tap Down Switch Signal
46-47	-	-	Not Used
48	D-GN	335	Low Speed Cooling Fan Relay Control
49	-	-	Not Used
50	D-BU	473	High Speed Cooling Fan Relay Control
51-52	-	-	Not Used
53	GY	705	5-Volt Reference A
54-56	-	-	Not Used

Powertrain Control Module (PCM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15430226 73-Way F Micro-Pack 64 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	BN	1456	EGR Valve Position Signal
2	OG/BK	1061	UART Serial Data (Secondary)
3	TN	800	UART Serial Data (Primary)
4	PK/BK	1746	Fuel Injector 3 Control
5	TN	1744	Fuel Injector 1 Control
6	L-GN/BK	1745	Fuel Injector 2 Control
7	TN/WH	845	Fuel Injector 5 Control
8	TN	2753	Low Reference
9	YE/BK	846	Fuel Injector 6 Control
10	L-BU/BK	844	Fuel Injector 4 Control
11	OG/WH	2122	IC 2 Control
12	GY/WH	3113	HO2S Heater Low Control (Bank 1 Sensor 1)
13	OG	1676	EGR Solenoid High Control
14	-	-	Not Used
15	PU	574	Low Reference
16	GY	435	EGR Solenoid Low Control
17	-	-	Not Used
18	L-GN	432	MAP Sensor Signal
19-20	-	-	Not Used
21	OG	631	12-Volt Reference
22	L-GN	1867	12-Volt Reference
23-24	-	-	Not Used
25	TN/WH	3211	HO2S Low Reference (Bank 2 Sensor 1)
26	BN/WH	633	CMP Sensor Signal
27	L-BU/BK	647	Medium Resolution Engine Speed Signal
28-29	-	-	Not Used
30	OG/BK	469	Low Reference
31	-	-	Not Used
32	PK/BK	632	Low Reference
33	GY	5047	5-Volt Reference
34	GY	2704	5-Volt Reference A
35	-	-	Not Used
36	GY	2303	Low Reference
37	YE	2174	Low Reference
38	D-BU	496	Knock Sensor 1 Signal
39	GY/BK	1798	Drain Wire
40	GY	1716	Low Reference
41	D-GN/WH	428	EVAP Canister Purge Solenoid Control
42-46	-	-	Not Used
47	TN/WH	3111	HO2S Low Reference (Bank 1 Sensor 1)
48	PU/WH	3110	HO2S Reference Voltage (Bank 1 Sensor 1)
49-52	-	-	Not Used
53	OG	225	Generator Turn On Signal
54	L-BU	1876	Knock Sensor 2 Signal
55	YE	410	ECT Sensor Signal
56	OG/BK	645	Drain Wire
57	TN/BK	231	Oil Pressure Switch Signal
58-59	-	-	Not Used
60	PU/WH	3210	HO2S Reference Voltage (Bank 2 Sensor 1)
61	PU	2121	IC 1 Control
62	L-GN	3212	HO2S Heater Low Control (Bank 2 Sensor 1)
63	L-BU	2123	IC 3 Control
64-72	-	-	Not Used
73	BK/WH	451	Ground

Powertrain Control Module (PCM) C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15430211 56-Way F Micro 64 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
1-2	-	-	Not Used
3	TN	3221	HO2S Low Signal (Bank 2 Sensor 2)
4	TN/WH	3121	HO2S Low Signal (Bank 1 Sensor 2)
5	YE/BK	1227	TFT Sensor Signal
6	YE	492	MAF Sensor Signal
7	-	-	Not Used
8	GY/WH	3122	HO2S Heater Low Control (Bank 1 Sensor 2)
9	-	-	Not Used
10	OG/WH	3223	HO2S Heater Low Control (Bank 2 Sensor 2)
11	OG/BK	1230	A/T ISS High Signal
12	YE	400	VSS High Signal
13-14	-	-	Not Used
15	GY	773	Transmission Range Switch Signal C
16-17	-	-	Not Used
18	PU	3220	HO2S High Signal (Bank 2 Sensor 2)
19	PU	3120	HO2S High Signal (Bank 1 Sensor 2)
20-21	-	-	Not Used
22	YE	772	Transmission Range Switch Signal B
23	WH	776	Transmission Range Switch Signal P
24	YE	657	TCC Release Switch Signal
25	-	-	Not Used
26	TN	472	IAT Sensor Signal
27-28	-	-	Not Used
29	D-BU	1225	Transmission Fluid Pressure Switch Signal B
30	OG	1226	Transmission Fluid Pressure Switch Signal C
31-32	-	-	Not Used
33	L-GN	1222	1-2 Shift Solenoid Valve Control
34	TN/WH	771	Transmission Range Switch Signal A
35-38	-	-	Not Used
39	BN	418	TCC PWM Solenoid Valve Control
40-43	-	-	Not Used
44	PU	401	VSS Low Signal
45	-	-	Not Used
46	YE/BK	1223	2-3 Shift Solenoid Valve Control
47	OG/BK	1228	PC Solenoid Valve High Control (Sol. A)
48	TN	2762	Low Reference
49	D-BU/WH	1231	A/T ISS Low Signal
50	TN/BK	2760	Low Reference
51	L-BU/WH	1229	PC Solenoid Valve Low Control (Sol. A)
52-56	-	-	Not Used