How to replace a bad ignition switch in a GMC Sierra?

How to Replace a Bad Ignition Switch in a GMC Sierra

Is your GMC Sierra giving you trouble starting? It could be a faulty ignition switch causing the issue. Don’t worry, replacing it is easier than you think. In this guide, we’ll walk you through the steps to replace a bad ignition switch in your GMC Sierra. Let’s get started!

Tools You’ll Need

  • Socket wrench set
  • Flathead screwdriver
  • New ignition switch
  • Needle-nose pliers
  • Pliers
  • Wire stripper/crimper

Step 1: Disconnect the Battery

Before you start replacing the ignition switch, make sure to disconnect the negative terminal of your battery to prevent any electrical mishaps.

Step 2: Remove the Steering Column Cover

Use a screwdriver to remove the screws holding the steering column cover in place. Gently pull the cover off to reveal the ignition switch underneath.

Step 3: Disconnect the Ignition Switch Wires

Use your pliers to disconnect the wires attached to the ignition switch. Take note of the wire colors and where they are connected for an easier reinstallation process.

Step 4: Remove the Old Ignition Switch

Unscrew the old ignition switch from the steering column and carefully pull it out. Be mindful of any remaining wires that need to be disconnected.

Step 5: Install the New Ignition Switch

Place the new ignition switch in the same position as the old one and screw it into place. Reconnect the wires following the color-coded notes you made earlier.

Step 6: Reassemble the Steering Column Cover

Gently snap the steering column cover back into place and tighten the screws to secure it. Make sure everything is properly aligned before moving on.

Step 7: Reconnect the Battery

Once the new ignition switch is installed and the steering column cover is back on, reconnect the negative terminal of the battery to restore power to your GMC Sierra.

Step 8: Test the New Ignition Switch

Turn the key in the ignition to test if the new switch is working properly. If your GMC Sierra starts without any issues, congratulations, you’ve successfully replaced the bad ignition switch!

By following these simple steps, you can save yourself time and money by replacing the ignition switch in your GMC Sierra on your own. Remember to take necessary precautions and consult a professional if you’re unsure about any step. Happy repairing!

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