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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 22 (COMPONENT CONNECTOR END VIEWS (Q85-X92))COMPONENT CONNECTOR END VIEWST12 AUTOMATIC TRANSMISSION ASSEMBLY
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
T12 Automatic Transmission Assembly
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION T12 Automatic Transmission Assembly
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. 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 | 13575434 | J-35616-66 (YE) | J-38125-28 | 2 21 24 47220 0 | Yazaki 12 | E | 1 |
| II | 13578934 | J-35616-66 (YE) | J-38125-28 | 2 21 24 47220 0 | Yazaki 12 | E | 1 |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 - 2 | - | - | - | Not Occupied | - | - |
| 3 | 0.5 | OG/BK | 1786 | Transmission Park/Neutral Signal 1 | II | - |
| 4 | 0.35 | RD/WH | 1840 | Battery Positive Voltage | I | - |
| 5 | 0.8 | BK/WH | 1551 | Signal Ground | II | - |
| 6 | 0.5 | BU/WH | 6311 | Cruise/ETC/TCC Brake Signal | I | - |
| 7 | - | - | - | Not Occupied | - | - |
| 8 | 0.5 | TN | 2501 | High Speed GMLAN Serial Data (-) 1 | II | - |
| 9 | 0.5 | BU | 5985 | Accessory Wakeup Serial Data | I | - |
| 10 | 0.5 | TN/BK | 2500 | High Speed GMLAN Serial Data (+) 1 | II | - |
| 11 | 0.5 | TN | 2501 | High Speed GMLAN Serial Data (-) 1 | II | - |
| 12 | 0.5 | PK | 2139 | Run/Crank Ignition 1 Voltage | I | - |
| 13 | 0.5 | TN | 2501 | High Speed GMLAN Serial Data (-) 1 | II | - |
| 14 | 0.5 | TN/BK | 2500 | High Speed GMLAN Serial Data (+) 1 | II | - |
| 15 | 0.5 | TN/BK | 2500 | High Speed GMLAN Serial Data (+) 1 | II | - |
| 16 | 0.5 | OG/BK | 6399 | Replicated TOS Signal | II | - |
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.