Left turn signal wont flash front & rear - 1995 Buick Century

The turn signals operate off of the emergency 4-way flasher. Check to see if your 4-ways flash. If they do, your problem is the 4-way flasher module. Replace that. It's not too difficult and fairly cheap

Get the left signal to flash fast then walk around the car to see which light isn't flashing then change the bulb or socket if they all appear to be flashing (front and rear) turn on the right turn signal then look into the front and rear lens and count the number of bulbs flashing, now do the same thing on the left. Many times there's more than 1 bulb in each lamp. I hope this helps. Take care.

rapid flashing indicates a bulb is burned out.

One of your bulbs is out. Turn your flashers on and walk around your vehicle to see witch one it is and replace it.

Bad bulb left rear.

Bad bulb ,& or socket

The 2 filament on the LH Front turn signal is most likely burned out, ...........or the ground to it, & the entire socket needs replaced. Caution lights, send signals to ALL FRONT & REAR lights. All turn signal lights must be in working order, as it is a "pulsating" currect surge sent to the bulbs, LH or RH, depending which direction you wisk to turn. If 1 filament is broken, the circuit is incomplete, & no flash will occur. Usually you will get one light that stays on, & the front or rear missing lighting, is the one whichis the culpret.

check your signal light flasher , located under the instrument panel, and also check your bulb up front on the left side.

Replace the burned out bulb. It is flashing fast to alert you that bulb is burnt out. Turn on the side that works properly & note all bulbs flashing in front, rear & side. Most likely there is at least 1 burnt out on the other side.