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

Power Sunroof

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REMOVAL & INSTALLATION



See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Place the sunshade in the stowed position.
  4.  
  5. Move the sliding panel rearward until the front rollers on the sliding panel contact the bottom of the cable guide ramp (forward down position).
  6.  
  7. Remove the garnish moldings, coat hooks, map lamp retainer, and dome lamp.
  8.  
  9. Remove the sunroof opening headlining close-out lace.
  10.  
  11. Remove the headlining material from the headlining retainer.
  12.  
  13. Disengage and lower the headlining.
  14.  
  15. Disconnect the wire harness from the switch and the dome lamp, remove the headlining.
  16.  
  17. Remove the dome lamp retaining studs.
  18.  
  19. Remove the hoses from the housing.
  20.  
  21. Remove the screws from each of the rearmost side supports.
  22.  
  23. Remove the screws holding the housing to the front header.
  24.  
  25. Support the sunroof housing and remove the nuts from the side front screws that retain the housing to the roof supports. Lower and remove the sun roof housing.
  26.  
  27. Installation is the reverse of removal. Torque nuts at the side front locations to 7-10 ft. lbs. (10-14 Nm).
  28.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the sunroof assembly

 
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