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.
2005 Buick Terraza CX, FWDFACTORY OEM SERVICE PROCEDURE
Turn Signal/Multifunction Switch Connector End View C2
Lighting Systems Connector End Views
Connector Part Information
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Terminal Part Information
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Turn Signal/Multifunction Switch C2
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| A | BN | 1356 | Flash To Pass Switch Signal |
| B-C | - | - | Not Used |
| D | BK/WH | 1551 | Ground |
| E | PU | 524 | Headlamp Dimmer Switch High Beam Signal |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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