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Transmission Control Module (TCM) (MT1)

Fig 1: Transmission Control Module (TCM) (MT1) Connector End View
GM1530595Courtesy of GENERAL MOTORS CORP.
Transmission Control Module (TCM) (MT1)

Pin Wire Color Circuit Function
1 0.5 BN 418 Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve Control
2 0.5 L-GN 1222 1-2 Shift Solenoid Valve Control
3 0.35 OG/BK 1230 Automatic Transmission Input Speed Sensor (AT ISS) High Signal
4 - - Not Used
5 0.35 OG/BK 6399 Replicated TOS Signal
6 0.5 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
7 0.5 TN/WH 2500 High Speed GMLAN Serial Data Bus + (CAN)
8-10 - - Not Used
11 0.35 D-BU 5985 Accessory Wake Up Serial Data
12-14 - - Not Used
15 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus + (CAN)
16 0.5 L-GN/BK 822 Vehicle Speed Sensor (VSS) Low Signal
17 0.5 L-BU/WH 1229 Pressure Control (PC) Solenoid Valve Low Control
18 - - Not Used
19 0.35 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
20 0.5 YE/BK 1223 2-3 Shift Solenoid Valve Control
21-22 - - Not Used
23 0.35 GY 773 Transmission Range (TR) Switch Signal C
24 0.35 PK 1224 Transmission Fluid Pressure (TFP) Switch Signal A
25 - - Not Used
26 D-BU/WH 1231 Automatic Transmission Input Speed Sensor (AT ISS) Low Signal
27-28 - - Not Used
29 0.35 TN/WH 771 Transmission Range (TR) Switch Signal A
30 0.35 TN 2762 Low Reference
31 0.5 PK 2139 Ignition Voltage
32 0.5 RD/WH 1840 Battery Positive Voltage
33 0.35 OG 1226 Transmission Fluid Pressure (TFP) Switch Signal C
34 - - Not Used
35 0.5 YE/BK 1227 Transmission Fluid Temperature (TFT) Sensor Signal
36 - - Not Used
37 0.5 TN 2501 High Speed GMLAN Serial Data Bus - (CAN)
38 0.5 TN/WH 2500 High Speed GMLAN Serial Data Bus + (CAN)
39 0.35 WH 776 Transmission Range (TR) Switch Signal P
40 0.5 OG/BK 1228 Pressure Control (PC) Solenoid Valve High Control
41 0.5 PU/WH 821 Vehicle Speed Sensor (VSS) High Signal
42 0.5 L-BU/WH 6311 Brake Switch Signal
43 - - Not Used
44 D-BU 1225 Transmission Fluid Pressure (TFP) Switch Signal B
45 - - Not Used
46 0.35 YE 772 Transmission Range (TR) Switch Signal B
47-48 - - Not Used
49 0.8 BK/WH 451 Ground
Connector Part Information 
  • OEM: 15463921
  • Service: N/A
  • Description: 49-Way F Micro-64 GT 280 Series Sealed (BK)
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