GM Full-Size Trucks 1988-1998 Repair Information

Distributor Cap and Rotor

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REMOVAL & INSTALLATION



Carbureted Engines

See Figures 1, 2, 3 and 4

  1. Remove the feed and module wire terminal connectors from the distributor cap.
  2.  
  3. Remove the retainer and spark plug wires from the cap.
  4.  
  5. Depress and release the 4 distributor cap-to-housing retainers and lift off the cap assembly.
  6.  
  7. Remove the 4 coil cover screws and cover.
  8.  
  9. Using a finger or a blunt drift, push the spade terminals up out of the distributor cap.
  10.  
  11. Remove all 4 coil screws and lift the coil, coil spring and rubber seal washer out of the cap coil cavity.
  12.  
  13. Remove the two rotor attaching screws (if equipped) and rotor.
  14.  
  15. Using a new distributor cap and rotor, reverse the above procedures to assemble, being sure to clean and lubricate the rubber seal washer with dielectric lubricant.
  16.  



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Fig. Fig. 1: Loosen the distributor hold-down fasteners



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Fig. Fig. 2: If necessary, label and remove the spark plug wires from the distributor cap



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Fig. Fig. 3: Remove the distributor cap...



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Fig. Fig. 4: ... then the rotor from the distributor

Fuel Injected Engines
  1. Tag and remove the spark plug wires.
  2.  
  3. Loosen the cap retaining fasteners and remove the cap.
  4.  
  5. Remove the rotor from the distributor shaft.
  6.  
  7. Installation is the reverse of removal.
  8.  

INSPECTION



  1. Remove the distributor cap and rotor as described in this section.
  2.  
  3. Check the cap for wear, electrode cracks or damage. Replace if defective.
  4.  
  5. Check the rotor for cracks and wear. Replace if defective.
  6.  

 
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