Left tail light

Asked by Mar 19, 2019 at 08:05 AM about the 2009 GMC Sierra 1500

Question type: Maintenance & Repair

My left turn signal and brake light doesn’t work but
now my reverse lights are on. When I turn on the
left signal the reverse light blinks real lightly. The
two bulbs have been replaced and seem to work
for a bit but then stopped. The bulbs look like they
are barely on real dim but won’t work properly.

1 Answer

76,835

This could be a couple of things. Bulb socket is corroded, causing electricity to move to different contacts; that's why the bulbs act like they're haunted. You have an electrical short in hot or ground or both.

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