🔧 Ignition Coils - Replacement

Your Equinox uses coil-on-plug ignition coils mounted directly on top of the spark plugs. Replacing a bad coil can fix misfires, rough idle, flashing check engine light, and poor acceleration.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hour

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⚠️ Safety & Precautions

• Work on a cool engine. The turbo area and cylinder head can stay hot for a long time.
• Turn the ignition off and remove the key/fob from the vehicle.
• Disconnect the negative battery cable before unplugging coils. This helps prevent accidental short circuits.
• Do not pull on the wire harness. Use the connector tab to release each coil connector.
• Keep dirt out of the spark plug wells. Debris can damage the engine when the coil is removed.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• Ratchet
• Extension bar
• Trim clip tool
• Dielectric grease
• Torque wrench
• Gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Qty: 1 per failed coil
• Ignition coil electrical connector clip - Qty: 1 if damaged

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully before starting.
• Disconnect the negative battery cable before removing any coils.
• Have a scan tool ready if you want to clear misfire codes after the repair.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove engine cover

• Lift the engine cover straight up by hand. If it feels stuck, wiggle it gently until it releases.
• Set it aside in a clean spot.

Step 2: Disconnect the battery

• Use a 10mm socket and ratchet to loosen the negative battery terminal.
• Move the cable aside so it cannot touch the battery post.
• Keep the cable away from metal.

Step 3: Remove the coil connector

• Locate the failed ignition coil on top of the engine.
• Press the connector lock tab and unplug the electrical connector by hand.
• If the connector is tight, use a trim clip tool carefully to help release it.

Step 4: Remove the ignition coil

• Use a 10mm socket, ratchet, and extension bar to remove the coil hold-down bolt.
• Pull the ignition coil straight up and out of the spark plug well.
• Do not twist hard.

Step 5: Install the new ignition coil

• Check the spark plug well for oil, water, or dirt. Clean it out if needed.
• Apply a small amount of dielectric grease inside the coil boot.
• Slide the new coil straight down onto the spark plug.
• Install the hold-down bolt and tighten with a torque wrench to 9 Nm (80 lb-in).

Step 6: Reconnect the harness

• Plug the electrical connector back into the coil until it clicks.
• Gently tug the connector to make sure it is locked in place.

Step 7: Reassemble and reconnect battery

• Reinstall the engine cover by pressing it down evenly.
• Reconnect the negative battery cable and tighten it with a 10mm socket.

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✅ After Repair

• Start the engine and let it idle.
• Check for a smooth idle and normal engine sound.
• If the check engine light was on, clear the code with a scan tool.
• If a misfire returns, the spark plug or wiring may also need inspection.

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💰 DIY vs Shop Cost

Shop Cost: $180-$450 (parts + labor)

DIY Cost: $40-$180 (parts only)

You Save: $140-$270 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 hour.

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🎯 Ready to get started?

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