How to Replace an Ignition Coil Safely and Efficiently on Cadillac Escalade?

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To replace Ignition Coil, begin by removing the sight shield in the intake manifold if necessary. If changing the back two ignition coils of the right side, then follow the next steps; otherwise, jump to the later steps. Always disable the high voltage system prior to any high voltage component or connection working to ensure personal protection equipment (PPE) are on. This procedure involves the process of disabling high voltage, testing for it's presence, and recognizing conditions where high voltage is present all the time. Inability to follow these procedures can yield grave injury or death. Start with service disconnect, after that, disconnect engine wiring harness electrical connector from the drive motor generator power inverter module cover. The drive motor generator power inverter module cover bolt and the cover need to be loosened and removed. Take off also the generator control module 3 phase cable clip nut and the clip from the engine bracket as well as pasturing the cables in a new position. Take off the right wheelhouse liner, drop the vehicle, and remove the engine bracket nut from the Ignition Coil bracket stud to remove the bracket. Remove the Ignition Coil wire harness electrical plug and pull back the boot of the spark plug wire, with twisting it a half turn. Set aside Ignition Coil bolts and remove the Ignition Coil off bracket. Note that two manufacturers manufacture the ignition coils hwnd: the melco (R) Ignition Coil has square shapes while delphi (R) Ignition Coil has round shapes. The melco(R) Ignition Coil bracket and the delphi(R) bracket are square and round respectively. The melco(R) Ignition Coil bracket is square in shape while the delphi(R) Ignition Coil bracket is round in shape. To install, when mounting the Ignition Coil on Ignition Coil bracket, insert the bolts for the ignition coils and tighten them to 10 nm (89 lb in). After that, without starting the engine, reinsulate the spark plug wire to the Ignition Coil by ensuring that it is properly done by pushing sideway to each boot in installation of any boot that is loose. Connect the Ignition Coil wiring horse electrical connector to the Ignition Coil. If it is one of the rear two ignition coils on the right side being replaced next steps are; otherwise, go to the final steps. Mount the engine bracket to the Ignition Coil bracket stud and tighten with nut, put it at 9 nm (80 lb in) of torque. Jack up the vehicle to an intermediate height and screw in the engine bracket bolts and tighten them to 50 nm (37 lb ft). Reinstall the right wheelhouse liner, connect the generator control module 3 phase cables to the bracket channel, and attach the cable clip to the tab on the engine bracket with the clip nut attached and tightened to 9 nm (80 lb in). Reassembly the drive motor generator power inverter module cover and secure the cover bolt 1.5 nm (13 lb in). Connect the engine wiring harness electrical connector to the drive motor generator power inverter module cover and install intake manifold sight shield as required. Finally, perform the service reconnect.

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Cadillac Escalade Ignition Coil

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