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 MANUALSCHEVROLET2025TRAILBLAZER ACTIV, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (K71-M81)COMPONENT CONNECTOR END VIEWSK111 FUEL PUMP DRIVER CONTROL MODULE (L3T)
2025 Chevrolet Trailblazer ACTIV, 4WD
K111 Fuel Pump Driver Control Module (L3T)
2025 Chevrolet Trailblazer ACTIV, 4WDSECTION K111 Fuel Pump Driver Control Module (L3T)
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool |
|---|---|---|---|
| I | Not required | J-35616-2A (GY) | No Tool Required |
| II | Not required | J-35616-35 (VT) | No Tool Required |
| III | Not required | J-35616-4A (PU) | No Tool Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 - 6 | - | - | - | Not Occupied | - | - |
| 7 | 1.5 | RD / WH | 5440 | Battery Positive Voltage | II | |
| 8 | 1.5 1.5 |
GY GY |
120 120 |
Fuel Pump Control Fuel Pump Control |
II II |
F48 FWD |
| 9 | 1.5 1.5 |
YE / GY YE / GY |
4137 4137 |
Fuel Pump Supply Voltage Phase 2 Fuel Pump Supply Voltage Phase 2 |
II II |
F48 FWD |
| 10 | 0.35 | YE / RD | 2709 | Fuel Tank Pressure Sensor 5V Reference | I | LBP/L3T |
| 11 | 0.35 | BU / WH | 890 | Fuel Tank Pressure Sensor Signal | I | LBP/L3T |
| 12 | 0.5 | BN / RD | 7445 | Fuel Line Pressure Sensor 5V Reference | I | |
| 13 | 0.35 0.35 |
BU / GN BU / GN |
1936 1936 |
Primary Fuel Level Sensor Signal Primary Fuel Level Sensor Signal |
I I |
F48 FWD |
| 14 | 0.35 | BU / WH | 1937 | Secondary Fuel Level Sensor Signal | I | F48 |
| 15 | 0.5 | WH | 4499 | High Speed GMLAN Serial Data [-] 7 | I | |
| 16 | 0.5 | VT / GN | 4320 | Powertrain Sensor Bus Enable | I | LBP/L3T |
| 17 | - | - | - | Not Occupied | - | - |
| 18 | 0.5 | GN / GY | 465 | Fuel Pump Primary Relay Control | I | |
| 19 - 20 | - | - | - | Not Occupied | - | - |
| 21 | 0.5 | WH | 1310 | EVAP Vent Solenoid Valve Control | III | LBP/L3T |
| 22 | 1.5 | BK | 4450 | Ground | II | |
| 23 | 0.5 | BK | 50 | Ground | III | FWD/F48 |
| 24 | 1.5 1.5 |
WH / BN WH / BN |
4138 4138 |
Fuel Pump Supply Voltage Phase 3 Fuel Pump Supply Voltage Phase 3 |
II II |
F48 FWD |
| 25 | 0.35 | BK / BN | 6284 | Fuel Tank Pressure Sensor Low Reference | I | LBP/L3T |
| 26 | 0.5 | BU / WH | 7446 | Fuel Pressure Sensor Signal | I | |
| 27 | 0.5 | BK / YE | 7447 | Fuel Pressure Sensor Low Reference | I | |
| 28 | 0.35 0.35 |
BK / GN BK / GN |
6281 6281 |
Fuel Level Sensor Low Reference Fuel Level Sensor Low Reference |
I I |
F48 FWD |
| 29 | 0.35 | BK / BU | 6282 | Fuel Level Sensor 2 Low Reference | I | F48 |
| 30 | 0.5 | BU / BN | 4498 | High Speed GMLAN Serial Data [+] 7 | I |
RENDER: 1.0x
NO RELATED
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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.