Chevrolet Full Size Cars 1979-1989

Signal and Marker Lights

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Since the light housing capsules (on the late model vehicles) are constructed by sonic welding, the ONLY service which can be performed are the replacement of the bulbs or the light housing.

REMOVAL & INSTALLATION



Front Turn Signal and Parking Lights


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Fig. Fig. 1 On this vehicle the turn signal twist socket was accessible from under the bumper

There are 2 ways to replace the front turn signal/parking light bulbs on most Chevrolet vehicles. Some may be accessed from under the bumper/fender or behind the radiator support, while others may only be reached by first removing the lamp housing. Before removing the housing, check to make sure no easier access is possible.

  1. Disconnect the negative battery cable.
  2.  
  3. Look for access to the socket from under the vehicle or underhood, behind the radiator support. If access is available, twist and remove the socket in order to reach the bulb.
  4.  

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.

  1. If access was not available, remove the lamp housing mounting screws and remove the housing, then separate the twist socket and replace the bulb.
  2.  
  3. Connect the negative battery cable and verify proper operation.
  4.  

Side Marker Lights


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Fig. Fig. 2 If necessary for access to the twist socket, loosen the screws and remove the bezel/marker light housing



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Fig. Fig. 3 Twist and remove the socket from the back of the light housing



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Fig. Fig. 4 Remove the bulb from the socket

Before beginning this procedure, check to make sure the marker light electrical socket is not accessible from under the hood or under the vehicle. If the socket is accessible, no bezels or housings will have to be removed.

  1. Disconnect the negative battery cable.
  2.  
  3. If necessary, loosen the headlight bezel retainers, then pull the bezel/marker light housing forward for access to the twist socket.
  4.  
  5. Disconnect the twist lock socket from the lens housing, then remove the bulb from the socket.
  6.  

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.

To install:

  1. Install the bulb to the socket, then install the socket to the housing.
  2.  
  3. If removed, install the bezel/marker light housing and secure using the retaining screws.
  4.  
  5. Connect the negative battery cable and verify proper operation.
  6.  

Rear Turn Signal, Brake and Parking Lights


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Fig. Fig. 5 If necessary, loosen and remove the tail light panel assembly retainers



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Fig. Fig. 6 Pull the assembly back for access to the bulb twist sockets



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Fig. Fig. 7 Twist and remove the tail light bulb socket from the assembly for access to the bulb



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Fig. Fig. 8 Remove the bulb from the socket



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Fig. Fig. 9 The rear marker lights may also be accessed this way on most vehicles



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Fig. Fig. 10 The license plate lamp is bulb is mounted in the tail light assembly



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Fig. Fig. 11 With all of the sockets removed, the tail light assembly may be fully removed from the vehicle

On many of the models covered by this guide, the rear lights may be accessed by either reaching up from under the vehicle or by opening the trunk. Some models may be equipped with a single tail light panel assembly which is mounted across the rear of the body, immediately above the bumper. If no access panels are available in the trunk, the entire assembly must be unbolted and separated from the body in order to reach the light twist sockets.

Before beginning this procedure, check to make sure the electrical socket is not accessible from under the bumper or inside the trunk. If the socket is accessible, no bezels or housings will have to be removed.

  1. Disconnect the negative battery cable.
  2.  
  3. If necessary for access, remove the tail light panel retainers and carefully pull the panel backwards on the bumper. If necessary support the panel or lean it against your legs.
  4.  
  5. Disconnect the twist lock socket from the lens housing, then remove the bulb from the socket.
  6.  

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.

To install:

  1. Install the bulb to the socket, then install the socket to the housing.
  2.  
  3. If removed, reposition the tail light panel assembly and secure using the retainers.
  4.  
  5. Connect the negative battery cable and verify proper operation.
  6.  

Dome Light

Most dome lamps are covered by a lens cap which is snapped into position. The lens cap may be removed by grasping, gently squeezing and pulling downward. For some earlier models, there may be a fastener holding the cap in place. If so, remove the fastener before attempting to free the lens cap. Once the cap is removed, the bulb may be withdrawn and replaced.

 
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