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 MANUALSBUICK2018REGAL BASEREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (A7-B52C)COMPONENT CONNECTOR END VIEWSA26 HVAC CONTROLS
2018 Buick Regal Base
A26 HVAC Controls
2018 Buick Regal BaseSECTION A26 HVAC Controls
Connector Part Information
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Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575867 | J-35616-64B (LT BU) | J-38125-215A | SAIT-A03T-M064 | Yazaki 14 | P | P |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.35 | RD/BU | 3240 | Battery Positive Voltage | I | - |
| 2 | - | - | - | Not Occupied | - | - |
| 3 | 0.35 | GN | 5060 | Low Speed GMLAN Serial Data | I | - |
| 4 | - | - | - | Not Occupied | - | - |
| 5 | 0.35 | BN/BU | 648 | Heated Windshield Switch Signal | I | - |
| 6 | 0.35 | GN | 649 | Heated Windshield Indicator Control | I | - |
| 7 - 8 | - | - | - | Not Occupied | - | - |
| 9 | 0.35 | GN/YE | 7531 | Local Interconnect Network Serial Data Bus 9 | I | - |
| 10 | 0.35 | BK | 1650 | Ground | I | - |
RENDER: 1.0x
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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.