Amigos les adjunto un detalle de como cambiar la bobina de encendido y bujias. Preferi dejar el texto original que se entiende bien los pasos.
Espero les sea útil...
Rolo

IGNITION COIL REPLACEMENT TRAX

Special tools
 EN-6009 Remover and Installer Ignition Coil
For equivalent regional tools refer to Special Tools
Removal Procedure
1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
2. Remove the engine cover. Refer to Refer to Engine Cover Replacement .
Fig 1
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Fig. 84: Ignition Coil Wiring Harness Connector And Fasteners
Courtesy of GENERAL MOTORS COMPANY
3. Disconnect the ignition coil wiring harness connector (1).
4. Remove the 2 ignition coil fasteners (2) from the ignition coil assembly (3).
Fig 2
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Fig. 85: Ignition Coil Remover/Installer
Courtesy of GENERAL MOTORS COMPANY
5. Install the EN-6009 remover/installer (1).
6. Remove the ignition coil (2).
7. Remove the EN-6009 remover/installer (1).
Installation Procedure

cambio de bujías

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Fig 3
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Fig. 86: Ignition Coil Remover/Installer
Courtesy of GENERAL MOTORS COMPANY
1. Install the EN-6009 remover/installer (1).
2. Install the ignition coil assembly (2).
3. Remove the EN-6009 remover/installer (1).
Fig 4
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Fig. 87: Ignition Coil Wiring Harness Connector And Fasteners
Courtesy of GENERAL MOTORS COMPANY
4. Install the 2 ignition coil assembly fasteners (2) and tighten to 8 (71 lb in).
5. Connect the ignition coil plug (1).
6. Install the engine cover. Refer to Refer to Engine Cover Replacement .
7. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

Excelente ! Muchas Gracias por la colaboración, Nicko !

Muy buena información, gracias por compartirla, es un procedimiento sencillo, lo presencié cuando le cambiaron las bujías.
Saludos.

Gracias por compartir...