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Dave Nova
Dave Nova, Pontiac Technician
Category: Pontiac
Satisfied Customers: 19452
Experience:  ASE Master Certification. GM World Class Certification
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My left front turn signal is not working. I have replaced

Customer Question

My left front turn signal is not working. I have replaced the bulb. Even changed the new bulb over to the right side and it still works. Where do I go next?
Submitted: 1 year ago.
Category: Pontiac
Expert:  Dave Nova replied 1 year ago.

Normally when just one of the turn signals fails, the problem is usually in the bulb socket. Check voltage at the Light Blue/White wire with the key on and left turn signal on. If you get voltage on the wire, replace the bulb socket. If you have no voltage there then you may have a bad connection at the underhood fuse panel connectors. There is no separate relay for turn signals, all turn signal voltage is supplied by the BCM (body control module).