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

Fig 1: TCM Connector View

Courtesy of GENERAL MOTORS CORP.

Automatic Transmission Related Connector End Views

Connector Part Information  OEM: 15463921 Service: Description: 49-Way F Micro.64 GT 280 Series (BK) Sealed

Terminal Part Information  Terminal/Tray: Core/Insulation Crimp: Release Tool/Test Probe:

Transmission Control Module (TCM), Engine Side

Pin	Wire Color	Circuit No.	Function
1	BN	418	TC PWM Solenoid Valve Control
2	GN	1222	1-2 Shift Solenoid Valve Control
3-4	-	-	Not Used
5	YE	400	VSS High Signal
6	RD	902	High Speed GMLAN Serial Data Bus - (CAN)
7	BN	901	High Speed GMLAN Serial Data Bus + (CAN)
8-10	-	-	Not Used
11	YE	243	Accessory Voltage
12-13	-	-	Not Used
14	WH	687	3-2 Shift Solenoid Valve Control
15	RD	902	High Speed GMLAN Serial Data Bus - (CAN)
16	L-GN/BK	822	VSS Low Signal
17	L-BU/WH	1229	PC Solenoid Valve Low Control
18	-	-	Not Used
19	BN	901	High Speed GMLAN Serial Data Bus + (CAN)
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	-	-	Not Used
27	PU	1807	Class 2 Serial Data
28	YE	710	Class 2 Serial Data
29	BK/WH	771	Transmission Range Switch Signal A
30	BK	2762	Low Reference
31	PK	439	Ignition 1 Voltage
32	OG	440	Battery Positive Voltage
33	RD	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	2500	High Speed GMLAN Serial Data Bus + (CAN)
39	WH	776	Transmission Range Switch Signal P
40	RD/BK	1228	PC Solenoid Valve High Control
41	PU/WH	821	VSS High Signal
42	L-BU	1320	Stop Lamp Supply Voltage
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	450	Ground