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open hood look for the light assembley powercords that go into the headlamp..turn right or left to loosen ... you may have to just take a screw driver and remove the cover over the signal light. press in and turn and replace.
1. Remove two 7mm hex screws on display panel cover (top, underneith)
2. Put on parking brake, engage key (do not start), move PRNDL lever to L to get out of way.
3. Pull the bottom part of display cover straight toward you (there are
2 clips, one on either side of the steering wheel behind the display
assembly cover that will snap free - takes a little force - Do one side
at a time) Remove and set aside. This reveals the four display unit
4. Remove the four 7mm screws on the actual display
panel. (fyi: all screws in this project are the same headsize,
threadsize, and length)
4. Tilt top of display panel toward you
and remove the three top connectors (they come out easily and are in a
cable harness so you can't put them back wrong) You will need to squeeze
the middle gently, unlocking connector and pull)
5. Pull out
display - which includes "glass" covering - this never gets removed!
(adjust steering wheel to lowest position if needed)
6. On the
rear of the panel you will see several (little grey) knobs. Find the one
right behind the odometer and using a pliers, twist counter clockwise
1/4 turn and remove. The little light bulb is encased in these little
knobs and is included as a one-piece replacement for the $1.50 to $4
7. Replace bulb assembly by inserting the bulb and turning clockwise 1/4 turn.
8. Assemble following reverse instruction of above.
you will need to change the bulb and the socket assembly for the bulb.. The connector melts the contacts to the bulb burning out the connection to the bulb to the socket.. this is common part that we change
In the back of the low bulb unit, is a round cover, turn it to remove it, then you have access to the bulbs, you´ll need patience large and thin fingers. I suggest you to buy the bulb first and a good quality one, because you´ll need to work on this with a cold engine.
Turn the engine off and open the hood. Pry up
the two fasteners from the radiator air baffle with a flat head
screwdriver. Move the baffle to the side to access the top of the
Pull up the two metal rods behind the headlight case. These
secure the case to the car. You may
need your pliers to pull them up.
Gently pull the headlight case out to access its rear. On the
rear, you will find several black dust covers. Twist off the dust cover
closest to the fender (the outward dust cover) to access the turn
Turn the bulb module counterclockwise to release it. Unplug
the electrical connector from the bulb module. Connect the new bulb to
the electrical connector (don't touch the glass with your hands; hold it
by the plastic piece). Insert the bulb module in the turn signal
housing, turn it clockwise and screw the dust cover back on.
Insert the headlight case in the mount. Push the pins back
down to secure it. Position the radiator baffle in its place and insert
Rear Turn Signal Bulbs
Open the trunk. Remove the net from the
side mounted wing nut (on the side with the faulty turn signal). Twist
the wing nuts (there are two per side) counterclockwise to remove them.
Peel the carpet layer back to access the rear signal lamp
wing nuts. Twist these wing nuts (two per side) counterclockwise to
remove them and release the rear signal.
Carefully pull the rear signal assembly away from the Impala.
The rear turn signal is the inner bulb (closest to the trunk). Press
the tab on the bulb module and turn it counterclockwise to release it
from the rear signal assembly.
Pull the old bulb straight off the module (don't twist).
Insert the new bulb in the module. Depress the tab on the connection and
insert the module back in the assembly. Twist it clockwise.
Insert the rear signal assembly. Re-attach the assembly's
wing nuts and push the carpet layer back in place. Tighten the other two
wing nuts to secure the carpet layer and reconnect the cargo net
Time to change the flasher unit, it's usually close to the drivers side of vehicle and behind a fuse box access panel and will have something like "12v 23/98W " on it. It's a largish cube shaped componant and may be water damaged !
there is a flasher for both 4 way & regular turn signals ( check to make sure the bulbs are good
the backs are easy >>> Just step on the brake, If the lights light up the bulbs are good you my have to remove the bulbs one at a time in the front check your ground wires to the lights if everything is good replace the flasher unit if that fails replace the turn signal switch
The Buick Century uses separate relays for the hazard warning and turn signal functions. The turn signal relay is located on the accelerator pedal bracket, and the 4-way flasher relay is located on the convenience center near the left kick panel. Try switching these two relays with one another to see if your turn signals work instead of your 4-ways.