Powertrain Control Module (PCM) Connector End View - C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357151 56-Way F Micro-Pack/064 Series (GY)
Pin	Wire Color	Circuit Number	Function
1-3	-	-	Not Used
4	TN/WH	3121	Oxygen Sensor Signal - Sensor 2 Low
5	YE/BK	1227	TFT Sensor Signal
6	YE	492	MAF Sensor Signal
7	-	-	Not Used
8	BK/WH	3122	HO2S Heater Low Control - Sensor 2
9-10	-	-	Not Used
11	RD/BK	1230	AT ISS High Signal
12	YE	400	OSS High Signal
13-14	-	-	Not Used
15	GY	773	Transmission Range Switch Signal C
16-18	-	-	Not Used
19	PU	3120	Oxygen Sensor Signal - Sensor 2 High
20	TN/BK	464	Delivered Torque Signal (L32)
21	-	-	Not Used
22	YE	772	Transmission Range Switch Signal B
23	WH	776	Transmission Range Switch Signal P
24	WH	1804	TCC Release Switch Signal
25	-	-	Not Used
26	TN	472	IAT Sensor Signal
27-32	-	-	Not Used
33	L-GN	1222	Shift Solenoid A Valve Control
34	BK/WH	771	Transmission Range Switch Signal A
35-37	-	-	Not Used
38	GY	1724	Supercharger Boost Control Solenoid Control (L32)
39	TN/BK	422	TCC Solenoid Valve Control
40	OG/BK	463	Requested Torque Signal (L32)
41-43	-	-	Not Used
44	PU	401	OSS Low Signal
45	-	-	Not Used
46	YE/BK	1223	Shift Solenoid B Valve Control
47	RD/BK	1228	PC Solenoid Valve High Control (Sol. A)
48	BK	452	Low Reference
49	D-BU/WH	1231	AT ISS Low Signal
50	BK	2760	Low Reference
51	L-BU/WH	1229	PC Solenoid Valve Low Control (Sol. A)
52-56	-	-	Not Used