GM Grand Am/Achieva/Calais/Skylark/Somerset 1985-98

C3I Module/Ignition Control Module (ICM)

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REMOVAL & INSTALLATION



Except 3.1L Engine

See Figures 1 and 2

  1. Disconnect the negative battery cable.
  2.  
  3. Disengage the 14-way connector at the ignition module.
  4.  
  5. Tag and disconnect the spark plug wires at the coil assembly.
  6.  
  7. Remove the nuts and washers retaining the module to the bracket.
  8.  
  9. Remove the coil-to-module retaining bolts or screws.
  10.  
  11. Noting or marking the lead colors for reassembly, disengage the connectors between the coil and ignition module.
  12.  
  13. Remove the ignition module from the vehicle.
  14.  



Click image to see an enlarged view

Fig. Fig. 1: View of the C3I module-3.0L engine shown



Click image to see an enlarged view

Fig. Fig. 2: View of the Ignition Control Module (ICM)-3.3L engine shown

To install:
  1. Fit the coils and connectors to the ignition module, then install the retaining bolts/screws. Tighten the retainers to 27 inch lbs. (3 Nm).
  2.  
  3. Fit the module assembly to the bracket, then install the nuts and washers.
  4.  
  5. Attach the spark plug wires, as tagged during removal.
  6.  
  7. Engage the 14-way connector to the module.
  8.  
  9. Connect the negative battery cable.
  10.  

3.1L Engine

See Figure 3

  1. Disconnect the negative battery cable.
  2.  
  3. Disengage all electrical connectors at the ICM.
  4.  
  5. Tag and detach the spark plug wires.
  6.  
  7. Unfasten the 6 screws securing the ignition coils to the ICM, then remove the coils from the module.
  8.  
  9. Remove the ignition control module.
  10.  



Click image to see an enlarged view

Fig. Fig. 3: View of the Ignition Control Module assembly mounting-1995-98 3.1L engine shown

To install:
  1. Install the ICM, then position the coils to the module and fasten the 6 retaining screws. Tighten the screws to 40 inch lbs. (5 Nm).
  2.  
  3. Attach the spark plug wires as tagged during removal.
  4.  
  5. Engage the electrical connections at the ICM.
  6.  
  7. Connect the negative battery cable.
  8.  

 
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