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.
K115 Reductant Control Module (LZ0)
2025 Chevrolet Tahoe PPV, 4WDSECTION K115 Reductant Control Module (LZ0)
| - |
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool |
|---|---|---|---|
| I | Not required | No Tool Required | No Tool Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | - - |
BK BK / WH |
3440 3440 |
Battery Positive Voltage Battery Positive Voltage |
I I |
- - |
| 2 | - | BN | 3676 | Diesel Exhaust Fluid Heating Tank 2 Heater Control | I | - |
| 4 | - | YE | 3677 | Diesel Exhaust Fluid Reservoir Heater Control | I | - |
| 6 | - | BK | 3244 | Diesel Exhaust Fluid Tank Temperature Sensor Signal | I | - |
| 7 | - | BK | 7290 | Diesel Exhaust Fluid Sensor Voltage Reference 1 | I | - |
| 8 | - | BN | 7284 | Diesel Exhaust Fluid Liquid Quality Temperature Signal | I | - |
| 9 | - | BK | 8434 | Diesel Exhaust Fluid Sensor Low Reference | I | - |
| 11 | - | YE | 3876 | Diesel Exhaust Fluid Smart Pump Supply Voltage Phase 3 | I | - |
| 13 | - | WH | 1650 | Ground | I | - |
| 14 | - | BN | 2936 | Diesel Exhaust Fluid Heating Tank 2 Heater Control Low | I | - |
| 16 | - | BU | 4318 | Diesel Exhaust Fluid Tank Heater Low Control | I | - |
| 18 | - | BN | 3245 | Diesel Exhaust Fluid Tank Temperature Sensor Low Reference | I | - |
| 19 | - | BN | 3106 | Diesel Exhaust Fluid Pressure Sensor 5 Volt Reference | I | - |
| 20 | - | BU | 3108 | Diesel Exhaust Fluid Pressure Sensor Signal | I | - |
| 21 | - | BU | 3107 | Diesel Exhaust Fluid Pressure Sensor Low Reference | I | - |
| 24 | - | BN | 3875 | Diesel Exhaust Fluid Smart Pump Supply Voltage Phase 2 | I | - |
| 26 | - | WH | 3199 | Diesel Exhaust Fluid Pressure Line Heater Control | I | - |
| 28 | - | BN | 4319 | Diesel Exhaust Fluid Line Heater Low Control | I | - |
| 30 | - - |
BN VT / BK |
2139 2139 |
Run/Crank Ignition 1 Voltage Run/Crank Ignition 1 Voltage |
I I |
- - |
| 31 | - | BU | 4987 | AUTOSAR CAN Bus [+] 1 Serial Data | I | - |
| 32 | - | BU | 4987 | AUTOSAR CAN Bus [+] 1 Serial Data | I | - |
| 33 | - - |
WH BN |
4986 4986 |
AUTOSAR CAN Bus [-] 1 Serial Data AUTOSAR CAN Bus [-] 1 Serial Data |
I I |
- - |
| 34 | - | BN | 4986 | AUTOSAR CAN Bus [-] 1 Serial Data | I | - |
| 36 | - | BU | 2937 | Diesel Exhaust Fluid Pump Motor Stator Low Reference | I | - |
| 37 | - | WH | 3103 | Diesel Exhaust Fluid Smart Pump Control | I | - |
| 38 | - - |
RD / WH RD |
2040 2040 |
Battery Positive Voltage Battery Positive Voltage |
I 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.