How to Replace the Turn Signal Bulb on My 1997 Buick Century

Changing automotive bulbs doesn't take much time.

Changing the front or rear turn signal in the 1997 Buick Century requires access to the headlight or taillight assemblies. You can perform the task without the bother and expense of hiring a service station to replace a bulb that costs a couple of dollars. The front turn signal is an amber-colored bulb, because it is situated in the clear headlight assembly. The rear turn signal bulb is clear and illuminates through an amber-colored section of the taillight assembly.

Things You'll Need

• 4157 NA amber auto replacement bulb (front turn signal bulb)
• 3057 auto replacement bulb (rear turn signal bulb)

Instructions

Front Turn Signal

1. Open the hood and pull the headlight assembly retaining brackets up about an inch. They are located at the back of each headlight assembly on both the left and right sides.

2. Pull the headlight assembly outward away from the vehicle far enough to reach behind it.

3. Pull the rubber weather boot off the back of the outer corner turn signal bulb.

4. Turn the bulb socket and wire counterclockwise a third of a turn to remove it from the headlight assembly.

5. Pull the turn signal bulb from the socket, holding the socket from its base, and insert the replacement 4157 NA replacement bulb into the socket. Reinstall by reversing the procedure.

Rear Turn Signal

1. Open the trunk and remove the three large, plastic wing nuts from the back of the taillight assembly.

2. Pull the taillight assembly outward away from the vehicle.

3. Twist the turn signal bulb socket (in the amber-colored portion of the taillight assembly) counterclockwise to remove it.

4. Pull the bulb out of the socket and push the 3057 replacement bulb into the socket.

5. Reinstall by reversing the procedure.

References

• GM: Buick Century Owner's Manual