GM Lumina/Silhouette/Transport APVs 1990-1999 Repair Guide

Ignition Coil Pack

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TESTING



  1. Remove the ignition coil(s).
  2.  
  3. Using an ohmmeter, check the resistance between the primary terminals on the underside of the coil. The resistance should be 0.50-0.90 ohms.
  4.  
  5. Check the resistance between the secondary terminals. It should be 5,000-8,000 ohms.
  6.  
  7. If the coil failed either test, replace the coil.
  8.  

REMOVAL AND INSTALLATION



  1. Tag and disconnect the spark plug wires.
  2.  

See Figure 1

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Fig. Fig. 1: Number the plug wires before removing them

  1. Remove the 2 screws securing the coil to the ignition control module.
  2.  
  3. Remove the coil assembly by pulling straight up on the coil.
  4.  

See Figures 2 and 3

Click image to see an enlarged view

Fig. Fig. 2: Remove the retainers securing the coil ...



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Fig. Fig. 3: ... then pull the coil from the ignition module assembly

To install:
  1. Install the coil assembly.
  2.  
  3. Install the two screws securing the coil to the ignition control module. Do not overtighten.
  4.  
  5. Connect the spark plug wires.
  6.  

 
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