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.
K26 Headlamp Control Module (T4L)
2018 Buick Regal BaseSECTION K26 Headlamp Control Module (T4L)
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 | 13327122 | J-35616-64B (LT BU) | J-38125-215A | Not Available | Not Available | Not Available | Not Available |
| II | 13327123 | J-35616-64B (LT BU) | J-38125-215A | Not Available | Not Available | Not Available | Not Available |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | BK | 850 | Ground | I | - |
| 2 | 0.5 | WH/RD | 2165 | Automatic Level Control Position Sensor 5V Reference | I | - |
| 3 | 0.5 | BK/BN | 2185 | Automatic Level Control Position Sensor Low Reference | I | - |
| 4 | 0.35 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | II | - |
| 5 | 0.35 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | II | - |
| 6 | 0.5 | BN | 2184 | Automatic Level Control Position Sensor Signal | I | - |
| 7 | 0.35 | WH/BU | 5986 | Serial Data Communication Enable | II | - |
| 8 | 0.35 | WH | 6432 | CAN Bus Low Serial Data | II | - |
| 9 | 0.35 | BU/GN | 6433 | CAN Bus High Serial Data | II | - |
| 10 | 0.35 | RD/YE | 740 | Battery Positive Voltage | II | - |
| 11 | 0.5 | WH/RD | 7524 | Front Axle Level Sensor 5V Reference | I | - |
| 12 | 0.5 | BK/GY | 7526 | Front Axle Level Sensor Low Reference | I | - |
| 13 | 0.35 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | II | - |
| 14 | 0.35 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | II | - |
| 15 | 0.5 | BN/WH | 7525 | Front Axle Level Sensor Signal | I | - |
| 16 | - | - | - | Not Occupied | - | - |
| 17 | 0.35 | WH/BU | 2232 | CAN Bus Low #3 Serial Data | II | - |
| 18 | 0.35 | BU/BK | 2233 | CAN Bus High #3 Serial Data | II | - |
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.