Transmission Control Module (TCM) Connector End View, Engine Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15463921 Conn 49 F Micro-64 GT 280 (BK) Sealed
Pin	Wire Color	Circuit No.	Function
1	BN	418	TCC PWM Solenoid Valve Control
2	L-GN	1222	1-2 Shift Solenoid Valve Control
3-5	-	-	Not Used
6	TN	2501	High Speed GMLAN Serial Data Bus - (CAN)
7	TN/WH	2500	High Speed GMLAN Serial Data Bus + (CAN)
8-10	-	-	Not Used
11	YE	43	Accessory Voltage
12-13	-	-	Not Used
14	WH	687	3-2 Shift Solenoid Valve Control
15	-	-	Not Used
16	PU	401	VSS Low Signal
17	L-BU/WH	1229	PC Solenoid Valve Low Control
18-19	-	-	Not Used
20	YE/BK	1223	2-3 Shift Solenoid Valve Control
21-22	-	-	Not Used
23	GY	773	Transmission Range Switch Signal C
24	PK	1224	Transmission Fluid Pressure Switch Signal A
25	TN/BK	422	TCC Solenoid Valve Control
26-28	-	-	Not Used
29	TN/WH	771	Transmission Range Switch Signal A
30	TN	2762	Low Reference
31	PK	1339	Ignition 1 Voltage
32	RD/WH	2440	Battery Positive Voltage
33	OG	1226	Transmission Fluid Pressure Switch Signal C
34	-	-	Not Used
35	YE/BK	1227	TFT Sensor Signal
36	-	-	Not Used
37	TN	2501	High Speed GMLAN Serial Data Bus - (CAN)
38	TN/BK	2500	High Speed GMLAN Serial Data Bus + (CAN)
39	WH	776	Transmission Range Switch Signal P
40	OG/BK	1228	PC Solenoid Valve High Control
41	YE	400	VSS High Signal
42	WH	17	Stop Lamp Switch Signal
43	-	-	Not Used
44	D-BU	1225	Transmission Fluid Pressure Switch Signal B
45	-	-	Not Used
46	YE	772	Transmission Range Switch Signal B
47-48	-	-	Not Used
49	BK/WH	451	Ground