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 MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 16 (COMPONENT CONNECTOR END VIEWS (Q37LR - S79P))COMPONENT CONNECTOR END VIEWSS78 TURN SIGNAL/MULTIFUNCTION SWITCH X3
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
S78 Turn Signal/Multifunction Switch X3
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION S78 Turn Signal/Multifunction Switch X3
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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 | Not Required | No Tool Required | J-38125-215A |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.35 | BN/BU | 391 | Rear Window Wiper Switch Signal | I | - |
| 2 | 0.35 | BK/WH | 1985 | Memory Seat/Mirror Personalization Signal | I | - |
| 3 | - | - | - | Not Occupied | - | - |
| 4 | 0.35 | BK/WH | 7595 | Auto Wiper On Signal | I | - |
| 5 | - | - | - | Not Occupied | - | - |
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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.