GM Corvette 1984-1996 Repair Guide

Ignition Coil and Module/Driver

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REMOVAL & INSTALLATION



See Figures 1 and 2

  1. Disconnect the negative battery cable.
  2.  
  3. Detach the 4-terminal ECM connector from the driver.
  4.  
  5. Tag and detach the coil connectors.
  6.  
  7. Disconnect the coil secondary wire.
  8.  

On 1992 vehicles, the module is referred to as the ignition coil driver. On later vehicles, it is called the ignition coil module.

  1. Remove the Ignition Coil Module (ICM) retaining bolt and stud from the engine.
  2.  
  3. Remove the ICM and bracket from the vehicle.
  4.  
  5. If necessary, remove the coil from the module and brackets, as follows:
    1. Remove the bolts retaining the coil to the module and brackets. The coil may be held onto the brackets by rivets. If so, drill out the rivets to remove.
    2.  
    3. Remove the remaining screws and the ignition coil module from the assembly.
    4.  

  6.  

Do not wipe the silicone grease from the bottom of the ignition coil assembly, if it is to reinstalled.



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the ignition coil, driver/module and bracket-5.7L (VIN P) engine

To install:
  1. If installing a new ignition coil module, spread the silicone grease included with the new module on the metal mounting face of the module and on the bracket where it seats. If reusing the old module, confirm that the grease is still present on the module.
  2.  
  3. Position the ignition coil module onto the bracket and install the retainers. Tighten the screws to 15 inch lbs. (1.7 Nm).
  4.  
  5. Install the coil to the brackets and install the screws provided with the replacement coil. Tighten the new screws to 25 inch lbs. (2.8 Nm).
  6.  



Click image to see an enlarged view

Fig. Fig. 2: The ignition coil is mounted to the bracket with 2 retaining screws

  1. Position the coil assembly onto the cylinder head assembly. Install the stud and tighten to 18 ft. lbs. (25 Nm).
  2.  
  3. Install the mounting screw and tighten to 18 ft. lbs. (25 Nm).
  4.  
  5. Engage the ignition coil harness and coil wiring connectors.
  6.  
  7. Attach the four-terminal ECM/PCM connector to the ignition coil module.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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