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Transmission Control Module (TCM), Engine Side

WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Transmission Control Module (TCM), Engine Side Connector End View
GM1372727Courtesy of GENERAL MOTORS CORP.
Transmission Control Module (TCM), Engine Side

Pin Wire Circuit Function
1 0.35 BN 418 Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve Control
2 0.35 L-GN 1222 1-2 Shift Solenoid (SS) Valve Control
3 0.35 OG/BK 1230 Input Speed Sensor (ISS) High Signal
4-5 - - Not Used
6 0.35 TN 2501 High Speed GMLAN Serial Data Bus
7 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus
8 - - Not Used
9 0.35 YE 657 TCC Release Switch Signal
10 0.35 PU 5526 TAP Up/TAP Down Switch Signal
11 0.35 BN 4 Accessory Voltage
12-15 - - Not Used
16 0.35 PU 401 VSS Low Signal
17 0.35 L-BU/WH 1229 Pressure Control (PC) Solenoid Valve Low Control
18-19 - - Not Used
20 0.35 YE/BK 1223 2-3 Shift Solenoid Valve Control
21-22 - - Not Used
23 0.35 GY 773 Transmission Range Signal C
24-25 - - Not Used
26 0.35 D-BU/WH 1231 ISS Low Signal
27-28 - - Not Used
29 0.35 TN/WH 771 Transmission Range Signal A
30 0.35 TN 2762 Low Reference
31 0.35 PK 39 Ignition 1 Voltage
32 0.35 RD/WH 2040 Battery Positive Voltage
33 0.35 OG 1226 Transmission Fluid Pressure Switch Signal C
34 - - Not Used
35 0.35 YE/BK 1227 TFT Sensor Signal
36 - - Not Used
37 0.35 TN 2501 High Speed GMLAN Serial Data Bus
38 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus
39 0.35 WH 776 Transmission Range Signal P
40 0.35 OG/BK 1228 PC Solenoid Valve High Control
41 0.35 YE 400 VSS High Signal
42 0.35 WH 17 Stop Lamp Switch Signal
43 - - Not Used
44 0.35 D-BU 1225 Transmission Fluid Pressure Switch Signal B
45 - - Not Used
46 0.35 YE 772 Transmission Range Signal B
47-48 - - Not Used
49 0.35 BK/WH 451 Ground
Connector Part Information 
  • OEM: 13541751
  • Service: 88987979
  • Description: 49-Way F Micro-64 Series Sealed (BK)

Terminal Part Information 
  • Terminal/Tray: 15356826
  • Core/Insulation Crimp: C
  • Release Tool/Test Probe: See Terminal Repair Kit
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