GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Doors

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REMOVAL & INSTALLATION



See Figure 1


CAUTION
Removing a door is a simple operation, but it requires careful handling of a heavy object that is awkward to handle. You must have a helper who will hold the door and ensure that it does not get out of control, which could hurt someone or strip the threads of the mounting bolts. Put a floor jack or other adjustable means of holding the door underneath before starting, so that the helper must only keep the door from tipping as you remove the fasteners.

The easiest and best way to remove the door is to remove the bolts that fasten the door assembly to the hinges, rather than attempting to remove the bolts fastening the hinges to the body. This is true because it is much easier to gain access to these bolts.

  1. If the vehicle has power operated components in the doors (electric windows or motor operated mirrors), disconnect the negative battery cable, remove the trim panel (see the appropriate procedure later in this section), and lift the watershield out far enough to reach the electrical connectors. Then, disconnect these connectors. Detach the rubber wire conduit and pull the harness coming from the body out of the door.
  2.  
  3. Very precisely use a sharp scribe to mark the relationship between the door and the door hinges so that you can remount it without the need to adjust it.
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  5. Open the door all the way and, with the help of another person and using a floor jack or other means, support the door.
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  7. Remove both the upper and lower bolts attaching the door to the outer portions of the hinges. Remove the door.
  8.  

To install:
  1. Install the mounting bolts and turn them in until they are nearly ready to clamp the hinge to the door.
  2.  
  3. Position the door carefully so that the matchmarks line up.
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  5. Tighten the bolts alternately top and bottom until the door is tightly held in position. Torque the bolts to 15-21 ft. lbs. (20-28 Nm).
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  7. Install and connect all disconnected wiring and battery cable.
  8.  



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Fig. Fig. 1: Door hinge bolt locations

ADJUSTMENT



Doors are adjustable by using floating plates inside both the doors and hinge pillars. Always mark locations of bolts before loosening them and beginning adjustment. It is best to remove the door lock striker to permit the door to hang free and then close the door so you can observe exactly how it fits onto the body.

Front Doors
  1. If the door requires fore and aft or up or down adjustment, loosen the body hinge pillar adjustments. Shift the position of the door with the help of an assistant and a floor jack. Then, tighten the bolts. When the position fore and aft and up and down is correct, torque the bolts to 15-21 ft. lbs. (20-28 Nm). If you have to move the door to the rear, replace the door jamb light switch.
  2.  
  3. If the door must be adjusted in or out, loosen the bolts attaching the door at the hinge pillar attachments. Shift the position of the door with the help of an assistant and a floor jack. Then, tighten the bolts. When the position in or out is correct, torque the bolts to 15-21 ft. lbs. (20-28 Nm).
  4.  

Rear Doors
  1. If the door requires in or out or significant up or down adjustment, loosen the door side hinge attaching screws. Shift the position of the door with the help of an assistant and a floor jack. Then, tighten the bolts. When the position in or out and up and down is correct, torque the bolts to 15-21 ft. lbs. (20-28 Nm).
  2.  
  3. If the door requires fore or aft or a slight up or down adjustment, loosen the body side, center pillar hinge adjusting bolts. Shift the position of the door with the help of an assistant and a floor jack. Then, tighten the bolts. When the position is correct, torque the bolts to 15-21 ft. lbs. (20-28 Nm). If you have to move the door to the rear, replace the door jamb light switch.
  4.  

 
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