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Identify the blown bulb. Note that if a headlight bulb has blown, the dip beam is on the outside and the high beam is on the inside. Turn off the ignition switch and light switches.
Open the hood and replace any blown headlight bulbs. Press the plastic spring clips and remove the bulb holder from the assembly. Pull the bulb out of the bulb holder and replace it with a new bulb. It only fits one way. Be sure not to touch the bulb's glass. Replace any parking lights at the same time, they are in the headlamp unit too.
Remove the front turn signal light unit in the bumper to change the turn signal bulb. Push gently on the inside edge and insert a blade between the bumper and the lens at the outside edge. Compress the spring and remove the lens. Fit a new lamp by inserting it into the plug. The side marker light is changed using a similar process.
Open the trunk to replace the rear fog light, stop light, tail light, reversing light and turn signal light. Remove the rear light cover and turn the bulb holder fastener 90 degrees counter clockwise. Remove the expired bulb, fit a new one and replace the parts, turning the bulb holder clockwise.
Remove the tail light assembly screws, then the assembly.
Disconnect the twist lock socket from the lens housing.
NOTE: To remove the bulb, turn the twist lock socket (at the rear of the housing) counterclockwise 1?4 turn, then remove the socket with the bulb; replace the bulb if defective.
Fig. 7: Remove the tail light assembly screws, then the assembly - wagon shown
Fig. 8: Twist the socket counterclockwise to remove from the housing
Fig. 9: This type of bulb simply can be pulled out of the socket for replacement
Attach the socket assemblies to the back of the lamp unit.
Install the lamp assembly to the vehicle with the mounting screws.
Remove the mounting nuts, then unplug the electrical harness to the lamp assembly.
The lamp now should come out.
Position the lamp assembly to the vehicle, then attach the electrical harness to the lamp.
Install the mounting nut, tighten to 62 inch lbs. (7 Nm).
Attach the lamp cover.
Fig. 10: Exploded view of the center high mount stop lamp assembly - wagon shown
Fig. 11: Light bulb application chart for all models with non-European headlamps
Fig. 12: Light bulb application chart for Buicks with European headlamps
Fig. 13: Light bulb application chart for Oldsmobiles with European headlamps
You access the bulb through the trunk. You will need to pull back trunk lining to reach the screws holding the lens cover in place. Undo the screws to remove the entire lens cover. Depending SE, SL, SES series you may be able to simply twist and pull bulb socket out without removing lens cover. The bulb is a typical auto bulb and is twist in. The cost of a new bulb is about 2 dollars.
Peel back the trunk lining to reveal three wing nuts. Remove wing nuts to pull lens cap away from car. To remove bulb socket push on the rectangular button (the release) while pushing on the end of the socket to unlock and spin counter clockwise to release. pull out old bulb and reinstall lens cap.
open the rear hatch,there are two screws holding each taillight assembly in,remove the two screws for the side you want off,pull out on side of lens assembly where the screws were,un hook the outer side when you swing it out,
Remove the one retaining screw from the upper corner of the lens.
Tape the end of a pry tool, then carefully extract from the bottom of the lens in a rocking motion till the stud is loosened from the retainer.
NOTE: Do not pry from the back of the lens, this will crack the lens or damage the paint.
Pull the lens assembly straight out from the body towards the front of the vehicle.
Twist and remove the wiring from the back of the lens.
Twist the bulb and remove it from the socket.
Fig. 5: Once the bulb is removed, inspect the socket for corrosion
Before installing a light bulb into the socket, ensure that all electrical contact surfaces are free of corrosion or dirt.
NOTE: Before installing the light bulb, note the positions of the two retaining pins on the bulb. They will likely be at different heights on the bulb, to ensure that the bulb is installed correctly. If, when installing the bulb, it does not turn easily, do not force it. Remove the bulb and rotate it 180 degrees from its former position, then reinsert it into the bulb socket.
Insert the light bulb into the socket and, while depressing the bulb, twist it 1/8 turn clockwise until the two pins on the light bulb are properly engaged in the socket.
To ensure that the replacement bulb functions properly, activate the applicable switch to illuminate the bulb which was just replaced. If the replacement light bulb does not illuminate, either it too is faulty or there is a problem in the bulb circuit or switch. Correct if necessary.
Install the socket and bulb assembly into the rear of the lens housing; otherwise, install the lens over the bulb.
Insert and secure the lens assembly into the body of the vehicle.
Hello terencewelch...the lens covers on these older models trucks seldom come off without damge. They are sealed with a gasket and compound to make them weather proof. You should be able to replace the bulb from the rear of the assembly. If you cant get to it from the back, slide the entire turn signal assembly out to access. Here is picture of the assembly for reference. Good luck...i hope this helps and will fixya up.