Automatic Transmission Related Connector End Views

Park/Neutral Position (PNP) Switch

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15416724 Conn 12F SLD (BK)
Pin	Wire Color	Circuit No.	Function
1	PU	6	Starter Solenoid Crank Voltage
2	WH	776	Transmission Range Signal P
3	-	-	Not Used
4	L-GN	24	Backup Lamp Supply Voltage
5	PK	239	Ignition 1 Voltage
6-7	-	-	Not Used
8	YE	772	Transmission Range Signal B
9	BK/WH	771	Transmission Range Signal A
10	GY	773	Transmission Range Signal C
11	PU	1500	Ignition 0 Voltage
12	YE	5	Crank Voltage

Output Speed Sensor Connector, Wiring Harness Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12162195 Conn 2F M/P 150.2 P2S (BK)
Pin	Wire Color	Circuit No.	Function
A	YE	400	OSS High Signal
B	PU	401	OSS Low Signal

4-Way Brake Switch Connector, Wiring Harness Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15317343 Conn 4F (YE)
Pin	Wire Color	Circuit No.	Function
1-2	-	-	Not Used
3	L-BU	20	Stop Lamp Switch Signal
4	OG	540	Battery Positive Voltage

12-Way Electronic PRNDL Connector, Wiring Harness Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12124940 Conn 12F (BK)
Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	BK	550	Ground
3-4	-	-	Not Used
5	PU	1500	Ignition 0 Voltage
6	BN	9	Park Lamp Supply Voltage
7	GY	8	Instrument Panel Lamp Supply Voltage
8	BK/WH	771	Transmission Range Switch Signal A
9	YE	772	Transmission Range Switch Signal B
10	GY	773	Transmission Range Switch Signal C
11	WH	776	Transmission Range Switch Signal P
12	-	-	Not Used

Transmission Control Module (TCM) C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326595 Siemens Socket Header 21-way (BU)
Pin	Wire Color	Circuit No.	Function
1	PK	839	Ignition 1 Voltage
2	-	-	Not Used
3	PK	839	Ignition 1 Voltage
4	RD/BK	1228	PC Solenoid Valve High Control
5	BN	418	TCC PWM Solenoid Valve Control
6	OG	480	Battery Positive Voltage
7-8	-	-	Not Used
9	D-BU	1225	Transmission Fluid Pressure Switch Signal B
10	RD	1226	Transmission Fluid Pressure Switch Signal C
11-13	-	-	Not Used
14	BK/WH	771	Transmission Range Signal A
15	YE	772	Transmission Range Signal B
16	GY	773	Transmission Range Signal C
17-19	-	-	Not Used
20	L-BU/WH	1229	PC Solenoid Valve Low Control
21	YE/BK	1223	2-3 Shift Solenoid Valve Control

Transmission Control Module (TCM) C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326594 Siemens Socket Header 37-way (BU)
Pin	Wire Color	Circuit No.	Function
22	D-BU/WH	1231	ISS Low Signal
23	PU	401	OSS Low Signal
24	OG/BK	586	Low Reference
25	WH	1804	TCC Release Switch Signal
26-32	-	-	Not Used
33	TN	2501	High Speed GMLan Serial Data Bus +
34	TN/BK	2500	High Speed GMLan Serial Data Bus -
35	WH	776	Transmission Range Signal P
36	-	-	Not Used
37	L-GN	1222	1-2 Shift Solenoid Valve Control
38	-	-	Not Used
39	BK/WH	451	Ground
40-42	-	-	Not Used
43	RD/BK	1230	ISS High Signal
44	YE	400	OSS High Signal
45-47	-	-	Not Used
48	L-BU	20	Stop Lamp Switch Signal
49-50	-	-	Not Used
51	YE/BK	1227	Transmission Fluid Temperature Sensor Signal
52	PU	1319	Engine/ Radio Serial Data K-Line
53-58	-	-	Not Used