It looks like your left front one is burnt out. When there is not enough current flow the good light will not flash.
How do you replace the front turn signal bulb located on a 2001 Buick Century?"
1999 Buick Century Turn Signal Bulb Numbers can be looked up with the link below in Sources and Related Links.
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Is the signal flasher underneath the steering wheel or somewhere else
The steering column in a Buick Century covers the steering shaft and houses the turn signal switch. Some Century cars have a tilt column as well.
yea it should
A 2004 Buick does not have a speedometer cable. The speedometer signal comes from electronic sensors.
Bad flasher unit or turn signal switch
No they are not. The hazard flasher should be located in the fuse panal. While the turn signal flasher is located behind the dash near the AC controls. Can be a pain to find and replace.
Sounds like a weak turn signal flasher
Remove access panel in trunk area--Wing nuts should release taillight assembly and bulbs twist out
You should run between 30 and 35 PSI in the tires on your Buick Century. If you have older tires on the vehicle, you should run closer to the 30 PSI mark.