Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (COMPONENT CONNECTOR END VIEWS - K20 X3 LGZ TO K109)COMPONENT CONNECTOR END VIEWSK71 TRANSMISSION CONTROL MODULE (M5T)
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
K71 Transmission Control Module (M5T)
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION K71 Transmission Control Module (M5T)
WARNING: This page is about a different car, the 2017 GMC Canyon and 2017 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 19301532 | J-35616-64B (LT BU) | J-38125-213 | Not Available | Not Available | Not Available | Not Available |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | WH/BU | 4507 | Transmission Clutch H Control | I | - |
| 2 | 0.5 | BU | 6401 | Clutch B Control | I | - |
| 3 | 0.5 | GY/GN | 6403 | Clutch D Control | I | - |
| 4 - 6 | - | - | - | Not Occupied | - | - |
| 7 | 0.5 | YE/GN | 4170 | Transmission Position Sensor B 9V Reference | I | - |
| 8 | 0.5 | YE/BU | 4171 | Transmission Position Sensor A 9V Reference | I | - |
| 9 - 12 | - | - | - | Not Occupied | - | - |
| 13 | 0.5 | GN/VT | 4510 | Transmission Intermediate Speed Signal | I | - |
| 14 | 0.5 | GY/BU | 6358 | Output Speed Signal | I | - |
| 15 | 0.5 | GN/YE | 6353 | Input Speed Signal | I | - |
| 16 | - | - | - | Not Occupied | - | - |
| 17 | 0.5 | WH | 4508 | Transmission Clutch G Control | I | - |
| 18 | 0.5 | BN | 6400 | Clutch A Control | I | - |
| 19 | 0.5 | GY | 6402 | Clutch C Control | I | - |
| 20 | 0.5 | YE/BN | 6404 | Clutch E Control | I | - |
| 21 | 0.5 | GN/WH | 6380 | TCC On/Off Solenoid A Control | I | - |
| 22 | 0.5 | YE/BN | 6210 | TCC On/Off Solenoid B Control | I | - |
| 23 - 24 | - | - | - | Not Occupied | - | - |
| 25 | 0.5 | BK/GY | 3927 | IMS Mode Switch Low Reference | I | - |
| 26 - 27 | - | - | - | Not Occupied | - | - |
| 28 | 0.5 | BK/BN | 586 | Transmission Oil Temperature Sensor Low Reference | I | - |
| 29 - 32 | - | - | - | Not Occupied | - | - |
| 33 | 0.75 | GN/GY | 6387 | Transmission High Side Driver 1 Signal Driver | I | - |
| 34 | - | - | - | Not Occupied | - | - |
| 35 | 0.5 | VT/BK | 2139 | Run/Crank Ignition 1 Voltage | I | - |
| 36 | - | - | - | Not Occupied | - | - |
| 37 | 0.5 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | I | - |
| 38 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | I | - |
| 39 - 46 | - | - | - | Not Occupied | - | - |
| 47 | 0.5 | GY/YE | 4169 | PRNDL S Signal | I | - |
| 48 | - | - | - | Not Occupied | - | - |
| 49 | 0.75 | GY/BN | 6388 | Transmission High Side Driver 2 Signal | I | - |
| 50 | - | - | - | Not Occupied | - | - |
| 51 | 0.5 | VT/YE | 5985 | Accessory Wakeup Serial Data | I | - |
| 52 | - | - | - | Not Occupied | - | - |
| 53 | 0.5 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | I | - |
| 54 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | I | - |
| 55 - 58 | - | - | - | Not Occupied | - | - |
| 59 | 0.5 | GY/WH | 4168 | PRNDL P Signal | I | - |
| 60 | 0.5 | WH/BK | 5983 | PRNDL C Signal | I | - |
| 61 | 0.5 | GY/BN | 5982 | PRNDL B Signal | I | - |
| 62 | 0.5 | VT/WH | 5981 | PRNDL A Signal | I | - |
| 63 | 0.5 | BN/WH | 585 | Transmission Oil Temperature Sensor Signal | I | - |
| 64 | - | - | - | Not Occupied | - | - |
| 65 | 0.75 | BK/WH | 1451 | Signal Ground | I | - |
| 66 | 0.75 | RD/GN | 1840 | Battery Positive Voltage | I | - |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.