K71 Transmission Control Module (MGM/MGU)
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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Connector Part Information
- Harness Type:Engine Wiring Harness
- OEM Connector: 35353856
- Service Connector: 19329822
- Description: 66-Way F 0.64, 2.8 Series, Sealed (BK with BK Terminal Position Assurance)
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
| I |
13587518 |
J-35616-35 (VT) |
J-38125-11A |
| II |
19351723 |
J-35616-64B (L-BU) |
J-38125-213 |
| Pin |
Size |
Color |
Circuit |
Function |
Terminal Type ID |
Option |
| 1 |
0.5 |
VT/WH |
422 |
Torque Converter Clutch Solenoid Valve Control |
II |
- |
| 2 |
0.5 |
GY/GN |
6403 |
Clutch Solenoid Valve D Control |
II |
- |
| 3 |
0.5 |
WH/BU |
4507 |
Transmission Clutch H Control |
II |
- |
| 4 |
0.5 |
WH |
4508 |
Transmission Clutch G Control |
II |
- |
| 5 - 6 |
- |
- |
- |
Not Occupied |
- |
- |
| 7 |
0.5 |
YE/GN |
4170 |
Transmission Output Shaft Speed Sensor Circuit 9V Reference |
II |
- |
| 8 |
0.5 |
YE/BU |
4171 |
Transmission Input Shaft Speed Sensor Circuit 9V Reference |
II |
- |
| 9 |
- |
VT/YE |
5985 |
Accessory Wake-Up Serial Data |
I |
- |
| 10 - 11 |
- |
- |
- |
Not Occupied |
- |
- |
| 12 |
0.5 |
GN/YE |
6353 |
Input Speed Signal |
II |
- |
| 13 |
0.5 |
GN/VT |
4510 |
Transmission Intermediate Speed Signal |
II |
- |
| 14 |
0.5 |
GY/BU |
6358 |
Output Speed Signal |
II |
- |
| 15 |
0.5 |
BN/WH |
6254 |
Transmission Input Speed Sensor Signal |
II |
- |
| 16 |
- |
- |
- |
Not Occupied |
- |
- |
| 17 |
0.5 |
GN/WH |
1530 |
Transmission Line Pressure Control Solenoid Valve Control |
II |
- |
| 18 |
0.5 |
YE/BN |
6404 |
Clutch Solenoid Valve E Control |
II |
- |
| 19 |
0.5 |
GY |
6402 |
Clutch Solenoid Valve C Control |
II |
- |
| 20 |
0.5 |
VT |
4509 |
Transmission Clutch F Control |
II |
- |
| 21 |
- |
- |
- |
Not Occupied |
- |
- |
| 22 |
0.5 |
GN/BK |
7819 |
Default Disable Solenoid Control |
II |
- |
| 23 |
- |
- |
- |
Not Occupied |
- |
- |
| 24 |
0.5 |
GN/WH |
2968 |
Transmission Auxiliary Fluid Pump Control |
II |
- |
| 25 - 27 |
- |
- |
- |
Not Occupied |
- |
- |
| 28 |
0.5 |
BK/BN |
586 |
Transmission Fluid Temperature Sensor Low Reference |
II |
- |
| 29 - 32 |
- |
- |
- |
Not Occupied |
- |
- |
| 33 |
0.5 |
GN/GY |
6387 |
Transmission High Side Driver 1 Control |
II |
- |
| 34 |
- |
- |
- |
Not Occupied |
- |
- |
| 35 |
0.5 |
VT/BK |
2139 |
Run/Crank Ignition 1 Voltage |
II |
- |
| 36 |
- |
- |
- |
Not Occupied |
- |
- |
| 37 |
0.5 |
BU |
2500 |
High Speed GMLAN Serial Data [+] 1 |
II |
- |
| 38 |
0.5 |
WH |
2501 |
High Speed GMLAN Serial Data [-] 1 |
II |
- |
| 39 - 48 |
- |
- |
- |
Not Occupied |
- |
- |
| 49 |
0.5 |
GY/BN |
6388 |
Transmission High Side Driver 2 Control |
II |
- |
| 50 |
- |
- |
- |
Not Occupied |
- |
- |
| 51 |
0.5 |
VT/YE |
5985 |
Accessory Wake-Up Serial Data |
II |
- |
| 52 |
- |
- |
- |
Not Occupied |
- |
- |
| 53 |
0.5 |
BU |
2500 |
High Speed GMLAN Serial Data [+] 1 |
II |
- |
| 54 |
0.5 |
WH |
2501 |
High Speed GMLAN Serial Data [-] 1 |
II |
- |
| 55 - 62 |
- |
- |
- |
Not Occupied |
- |
- |
| 63 |
0.5 |
BN/WH |
585 |
Transmission Fluid Temperature Sensor Signal |
II |
- |
| 64 |
0.5 |
GN/YE |
5724 |
Ignition Mode Switch Mode Control |
II |
- |
| 65 |
1.5 |
BK/WH |
451 |
Signal Ground |
I |
- |
| 66 |
1.5 |
RD/GN |
1840 |
Battery Positive Voltage |
I |
- |