Chevrolet Full Size Cars 1979-1989

Headlights

Imprimir

REMOVAL & INSTALLATION





Click image to see an enlarged view

Fig. Fig. 1 Exploded view of a common headlight mounting



Click image to see an enlarged view

Fig. Fig. 2 Loosen and remove the headlight bezel retaining screws



Click image to see an enlarged view

Fig. Fig. 3 Don't forget the screws on the side of the bezel



Click image to see an enlarged view

Fig. Fig. 4 With the screws removed, pull the bezel from the front of the vehicle



Click image to see an enlarged view

Fig. Fig. 5 Loosen and remove the retaining ring attaching screws



Click image to see an enlarged view

Fig. Fig. 6 Most retaining rings use 4 screws, 2 on top and 2 on the bottom



Click image to see an enlarged view

Fig. Fig. 7 Remove the retaining ring for access to the headlamp



Click image to see an enlarged view

Fig. Fig. 8 Remove the headlamp and unplug the wiring harness connector

If some or all of the headlight bulbs being replaced still operate, refer to the headlight aiming procedure later in this section to ease checking or adjustment of the headlights after installation.

  1. Disconnect the negative battery cable.
  2.  
  3. Loosen and remove the retaining screws, then remove the headlight bezel from the front of the vehicle.
  4.  
  5. On most models, the headlight bulb retaining ring is only held on by retaining screws. If so, remove the bulb retaining ring screws. These are the screws which hold the thin metal ring which holds the bulb against the adjusting plate. Do not touch the two headlight aiming screws, at the center of the top and side of the retaining ring (these screws will have different heads), or the headlight aim will have to be re-adjusted.
  6.  

One way to identify the retaining ring screws is that they will be threaded through a lip on the outer edge of the retaining ring before threading through the adjusting plate. One the other hand, the adjustment screws are first threaded through the adjustment plate and then a spring loaded holder underneath it.

  1. Some later model vehicles may use a spring on the retaining ring. If so equipped, disengage the spring from the retaining ring, using a cotter pin removal tool, then remove the retaining ring screws.
  2.  
  3. Pull the bulb and ring forward and then separate them. Unplug the electrical connector from the rear of the bulb and remove the bulb from the vehicle.
  4.  

To install:

  1. Plug the new bulb into the electrical connector.
  2.  
  3. Position the retaining ring over the bulb, then install the assembly to the adjusting plate. Secure using the retaining screws and, if applicable, the spring.
  4.  
  5. Install and secure the headlight bezel.
  6.  
  7. Connect the negative battery cable.
  8.  

HEADLIGHT AIMING





Click image to see an enlarged view

Fig. Fig. 9 Headlight adjustment screw locations for most Chevy vehicles



Click image to see an enlarged view

Fig. Fig. 10 Dual headlight adjustment screw locations one side shown here (other side should be a mirror image



Click image to see an enlarged view

Fig. Fig. 11 The headlight aiming screws are accessible with the trim bezel in place

The headlights must be properly aimed to provide the best, safest road illumination. The lights should be checked for proper aim and adjusted as necessary. Certain state and local authorities have requirements for headlight aiming; these should be checked before adjustment is made.

Headlight adjustment may be temporarily made using a wall, as described below, or on the rear of another vehicle. When adjusted, the lights should not glare in oncoming cars windshields, nor should they illuminate the passenger compartment of cars driving in front of you. These adjustments are rough and should always be fine-tuned by a repair shop which is equipped with headlight aiming tools.