This is NOT a simple DIY job for someone unfamiliar with automotive repair. Improperly handling high voltage components can lead to injury or damage to your vehicle. If you're not comfortable with automotive electrical work, take your Malibu to a qualified mechanic.
That said, here's a *general* overview of the process. This is NOT a substitute for consulting a repair manual specific to your Malibu's year and engine:
1. Identify the Ignition Module Location: Consult your vehicle's repair manual or a reliable online resource (like a repair forum specific to your Malibu's year and engine) to pinpoint the location of the ignition module. It's often near the distributor (if your engine has one) or integrated with the coil packs on the engine.
2. Disconnect the Battery: This is crucial to prevent electrical shock. Disconnect the negative (-) terminal first.
3. Remove Related Components: You may need to remove other parts to access the ignition module. This could include air intake components, wiring harnesses, or other engine covers. Your repair manual will guide you through this.
4. Disconnect the Wiring Harness: Carefully unplug the electrical connectors from the ignition module. Take pictures before disconnecting to help with reassembly. Note the orientation of each connector.
5. Remove the Ignition Module: The module is typically held in place with bolts or screws. Remove these fasteners to release the module.
6. Install the New Ignition Module: Carefully install the new ignition module, ensuring it's securely fastened.
7. Reconnect the Wiring Harness: Plug in the electrical connectors, making sure they are correctly aligned.
8. Reconnect Related Components: Reinstall any parts you removed in Step 3.
9. Reconnect the Battery: Reconnect the battery's negative (-) terminal.
10. Test the Ignition System: Start the engine to verify the replacement was successful.
Again, this is a highly simplified overview. You will need a repair manual specific to your Malibu's year and engine for detailed instructions, including torque specifications and wiring diagrams. Attempting this without the proper information and tools could result in damage to your vehicle or personal injury. If you are unsure about any step, seek professional help.
