Transmission Control Module (TCM) (Gas)

Fig 1: Transmission Control Module (TCM) (Gas) Connector End View

Courtesy of GENERAL MOTORS CORP.

Transmission Control Module (TCM) (Gas)

Pin	Wire	Circuit	Function
1	0.5 BN	418	Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve Control
2	0.5 L-GN	1222	Shift Solenoid A Valve Control
3	0.35 BN/WH	6254	ISS Signal (4L60)
	0.5 OG/BK	1230	Automatic Transmission Input Speed Sensor (AT ISS) High Signal (4L80)
4	-	-	Not Used
5	0.5 OG/BK	6399	Replicated TOS Signal
6	0.5 TN	2501	High Speed GMLAN Serial Data Bus (-)
7	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus (+)
8-10	-	-	Not Used
11	0.5 D-BU	5985	Accessory Wakeup Serial Data
12-13	-	-	Not Used
14	0.5 WH	687	3-2 Shift Solenoid Valve Control
15	0.5 TN	2501	High Speed GMLAN Serial Data Bus (-)
16	0.5 L-GN/BK	822	Vehicle Speed Sensor (VSS) Low Signal
17	0.35 L-BU/WH	1229	PC Solenoid Valve Low Control (Sol. A)
18	-	-	Not Used
19	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus (+)
20	0.5 YE/BK	1223	Shift Solenoid B Valve Control
21-22	-	-	Not Used
23	0.35 GY	773	Transmission Range Switch Signal C
24	0.35 PK	1224	Transmission Fluid Pressure Switch Signal A
25	0.5 TN/BK	422	Torque Converter Clutch (TCC) Solenoid Valve Control
26	0.5 D-BU/WH	1231	Automatic Transmission Input Speed Sensor (AT ISS) Low Signal (4L80)
27-28	-	-	Not Used
29	0.35 TN/WH	771	Transmission Range Switch Signal A
30	0.35 TN	452	Low Reference
31	0.5 PK	2139	Ignition Voltage
32	0.35 RD/WH	1840	Battery Positive Voltage
33	0.35 OG	1226	Transmission Fluid Pressure Switch Signal C
34	-	-	Not Used
35	0.35 YE/BK	1227	Transmission Fluid Temperature (TFT) Sensor Signal
36	-	-	Not Used
37	0.5 TN	2501	High Speed GMLAN Serial Data Bus (-)
38	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus (+)
39	0.35 WH	776	Transmission Range Switch Signal P
40	0.35 OG/BK	1228	PC Solenoid Valve High Control (Sol. A)
41	0.5 PU/WH	821	Vehicle Speed Sensor (VSS) High Signal
42	0.5 L-BU/WH	6311	Torque Converter Clutch (TCC) Brake Signal
43	-	-	Not Used
44	0.35 D-BU	1225	Transmission Fluid Pressure Switch Signal B
45	0.35 D-BU	6253	Low Reference
46	0.35 YE	772	Transmission Range Switch Signal B
47-48	-	-	Not Used
49	2 BK/WH	1551	Ground

Connector Part Information  OEM: 15463921 Service: 88987979 Description: 49-Way F GT 280 Micro-Pack 64 Sealed (BK)

Terminal Part Information  Pins: 1-3, 5-7, 11, 14-17, 19, 20, 23-26, 29, 30-33, 35, 37-42, 44-46 Terminal/Tray: 15359541/4 Core/Insulation Crimp: M/M Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU) Pins: 49 Terminal/Tray: 15392777/23 Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: J-38125-553/J-35616-4A (PU)