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 LS, 1.2L ENG VIN PREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALCOMPONENT CONNECTOR END VIEWS (K71-M81)COMPONENT CONNECTOR END VIEWSK111 FUEL PUMP DRIVER CONTROL MODULE (L3T)
2025 Chevrolet Trailblazer LS, 1.2L Eng VIN P
K111 Fuel Pump Driver Control Module (L3T)
2025 Chevrolet Trailblazer LS, 1.2L Eng VIN PSECTION 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.