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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2014EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISQUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - K17 (EXCEPT JL4) TO K9 (X1)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE (ECM) X1 & X2K20 ENGINE CONTROL MODULE X2 (LU3)
2014 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
K20 Engine Control Module X2 (LU3)
2014 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION K20 Engine Control Module X2 (LU3)
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | Pins: 4-5, 6-13, 16, 20, 30-33, 35-39, 41, 43, 45-46, 48-51, 54, 58, 65-66, 68, 70-71 - 13575575 | J-35616-64B (L-BU) | J-38125-213 | Pins: 4-5, 6-13, 16, 20, 30-33, 35-39, 41, 43, 45-46, 48-51, 54, 58, 65-66, 68, 70-71 - 33467-0005 | 23 | Pins: 4-5, 13, 20, 33, 35-39, 41, 45-46, 48-51, 54, 58, 65-66, 68, 70-71 - K | K |
| II | Pending | J-35616-35 (VT) | J-38125-11A | 7116-4152-02 | 9 | A | 5 |
K20 Engine Control Module X2 (LU3)
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1-3 | - | - | - | Not Occupied | - | - |
| 4 | 0.5 | TN | 2761 | Low Reference | I | - |
| 5 | 0.35 | GY/BK | 6272 | Low Reference | I | - |
| 6 | 0.5 | TN | 1744 | Fuel Injector 1 Control | I | - |
| 7 | 0.5 | YE/BK | 846 | Fuel Injector 6 Control | I | - |
| 8 | 0.5 | TN/WH | 845 | Fuel Injector 5 Control | I | - |
| 9 | 0.5 | BN | 2129 | Low Reference | I | - |
| 10 | 0.5 | L-BU/BK | 844 | Fuel Injector 4 Control | I | - |
| 11 | 0.5 | PK/BK | 1746 | Fuel Injector 3 Control | I | - |
| 12 | 0.5 | L-GN/BK | 1745 | Fuel Injector 2 Control | I | - |
| 13 | 0.5 | GY | 2704 | 5-Volt Reference 1 | I | - |
| 14-15 | - | - | - | Not Occupied | - | - |
| 16 | 0.5 | YE | 581 | Throttle Actuator Control Motor Control - 1 | I | - |
| 17-19 | - | - | - | Not Occupied | - | - |
| 20 | 0.35 | BN | 6266 | Low Reference | I | - |
| 21 | - | - | - | Not Occupied | - | - |
| 22 | 0.5 | PU | 2121 | Ignition Coil 1 Control | - | - |
| 23 | 0.5 | L-BU | 2123 | Ignition Coil 3 Control | - | - |
| 24 | 0.5 | OG/WH | 2122 | Ignition Coil 2 Control | - | - |
| 25-29 | - | - | - | Not Occupied | - | - |
| 30 | 0.5 | D-GN/WH | 428 | Evaporative Emission (EVAP) Canister Purge Solenoid Control | I | - |
| 31 | 0.5 | OG | 225 | Generator Turn On Signal | I | - |
| 32 | 0.5 | BN | 582 | Throttle Actuator Control Motor Control - 2 | I | - |
| 33 | 0.35 | D-BU | 6259 | 5-Volt Reference 1 | I | - |
| 34 | - | - | - | Not Occupied | - | - |
| 35 | 0.35 | GY | 2705 | 5-Volt Reference 1 | I | - |
| 36 | 0.35 | TN/WH | 331 | Oil Pressure Sensor Signal | I | - |
| 37 | 0.8 | PU/WH | 1665 | Heated Oxygen Sensor (HO2S) High Signal - Bank 1 Sensor 1 | I | - |
| 38 | 0.8 | PU | 1666 | Heated Oxygen Sensor (HO2S) High Signal - Bank 2 Sensor 1 | I | - |
| 39 | 0.5 | L-GN | 432 | Manifold Absolute Pressure (MAP) Sensor Signal | I | - |
| 40 | 0.35 | TN | 2752 | Low Reference | I | - |
| 41 | 0.35 | BK | 2755 | Low Reference | I | - |
| 42 | - | - | - | Not Occupied | - | - |
| 43 | 0.5 | GY | 23 | Generator Field Duty Cycle Signal | I | - |
| 44 | - | - | - | Not Occupied | - | - |
| 45 | 0.35 | WH/BK | 6271 | Crankshaft Position (CKP) Sensor Signal | I | - |
| 46 | 0.35 | D-BU/WH | 6265 | Camshaft Position (CMP) Sensor Signal | I | - |
| 47 | - | - | - | Not Occupied | - | - |
| 48 | 0.8 | TN | 1664 | Heated Oxygen Sensor (HO2S) Low Signal - Bank 1 Sensor 1 | I | - |
| 49 | 0.5 | OG/BK | 469 | Low Reference | I | - |
| 50 | 0.5 | GY | 1716 | Knock Sensor (KS) 1 Signal | I | - |
| 51 | 0.5 | D-BU | 496 | Knock Sensor (KS) 1 Signal | I | - |
| 52 | - | - | - | Not Occupied | - | - |
| 53 | 0.35 | GY | 2701 | 5-Volt Reference 2 | I | - |
| 54 | 0.35 | PU/WH | 6270 | 5-Volt Reference 2 | I | - |
| 55-56 | - | - | - | Not Occupied | - | - |
| 57 | 0.35 | D-GN | 485 | Throttle Position (TP) Sensor 1 Signal | I | - |
| 58 | 0.5 | YE | 410 | Engine Coolant Temperature (ECT) Sensor Signal | I | - |
| 59 | 0.35 | PU | 486 | Throttle Position (TP) Sensor 2 Signal | I | - |
| 60-64 | - | - | - | Not Occupied | - | - |
| 65 | 0.8 | GY/WH | 3113 | Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 1 Sensor 1 | I | - |
| 66 | 0.8 | L-GN | 3212 | Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 2 Sensor 1 | I | - |
| 67 | - | - | - | Not Occupied | - | - |
| 68 | 0.8 | TN | 1667 | Heated Oxygen Sensor (HO2S) Low Signal - Bank 2 Sensor 1 | I | - |
| 69 | - | - | - | Not Occupied | - | - |
| 70 | 0.5 | GY | 2303 | Knock Sensor (KS) 2 Signal | I | - |
| 71 | 0.5 | L-BU | 1876 | Knock Sensor (KS) 2 Signal | I | - |
| 72 | - | - | - | Not Occupied | - | - |
| 73 | 3 | BK/WH | 1551 | Ground | - | - |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.