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    GM Camaro/Firebird 1993-1998 Repair Guide

    Ignition Coil and Module

    Print

    REMOVAL & INSTALLATION



    See Figures 1 through 7

    1993-96 Vehicles
    1. Disconnect the negative battery cable.
    2.  
    3. Detach the four-terminal ECM/PCM connector at the ignition coil module.
    4.  
    5. Disconnect the coil wiring connectors and the ignition coil harness.
    6.  
    7. Remove the ignition coil assembly retainer screws. Remove the ignition coil assembly from the engine.
    8.  
    9. 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.  

    10.  

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

    To install:

    If a new ignition coil module is to be installed, a package of silicone grease will be included with the module. This grease is necessary for ignition coil module cooling.

    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.  
    7. Position the coil assembly onto the cylinder head assembly. Install the stud and tighten to 18 ft. lbs. (25 Nm).
    8.  
    9. Install the mounting screw and tighten to 18 ft. lbs. (25 Nm).
    10.  
    11. Engage the ignition coil harness and coil wiring connectors.
    12.  
    13. Attach the four-terminal ECM/PCM connector to the ignition coil module.
    14.  
    15. Connect the negative battery cable.
    16.  



    Click image to see an enlarged view

    Fig. Fig. 1: Ignition coil assembly mounting-5.7L engine



    Click image to see an enlarged view

    Fig. Fig. 2: Ignition coil and ignition coil module-5.7L engine



    Click image to see an enlarged view

    Fig. Fig. 3: Disconnect the ignition coil secondary lead



    Click image to see an enlarged view

    Fig. Fig. 4: Detach the ignition coil electrical connector ...



    Click image to see an enlarged view

    Fig. Fig. 5: ... then detach the 4-terminal PCM connector from the ignition coil module



    Click image to see an enlarged view

    Fig. Fig. 6: Unfasten the ignition coil-to-module retaining bolts ...



    Click image to see an enlarged view

    Fig. Fig. 7: ... then remove the ignition coil from the vehicle

    1997-98 Vehicles
    1. Disconnect the negative battery cable.
    2.  
    3. Detach the electrical connectors from the ignition coil.
    4.  
    5. Remove the engine wiring harness ground nut and ground terminals.
    6.  
    7. Remove the ignition coil studs and the fuel canister purge tube retainer.
    8.  
    9. Remove the ignition coil from the cylinder head. If the ignition coil is to be reinstalled, do not wipe the silicone grease from the bottom of the coil.
    10.  
    11. 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.  

    12.  

    To install:

    If a new ignition coil module is to be installed, a package of silicone grease will be included with the module. This grease is necessary for ignition coil module cooling.

    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.  
    7. Position the ignition coil to the cylinder head.
    8.  
    9. Install the fuel canister purge tube retainer and the ignition coil studs. Tighten the ignition coil studs to 30 ft. lbs. (40 Nm).
    10.  
    11. Install the engine wiring harness ground terminals and ground nut. Tighten the ground nut to 16 ft. lbs. (22 Nm).
    12.  
    13. Attach the electrical connectors to the ignition coil.
    14.  
    15. Connect the negative battery cable.
    16.  

     
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