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How to Replace the Headlamp on a 2008 GMC Acadia

by Trey Johnson

Proper headlamp performance is vital to the safe operation of a motor vehicle at night or in inclement conditions. If you have noticed the light output from your 2008 GMC Acadia headlights has diminished, or if one or more bulbs has burned out, it is time to replace them. Replacing the headlamps in your Acadia is an easy process that requires no tools. You will be rewarded with improved nighttime visibility in your vehicle after a small investment of time.

Turn off the engine and turn the light selector switch to the off position.

Open the hood of the vehicle and prop open. Remove the electrical connector at the back of the headlamp assembly by depressing the plastic tab and pulling straight back. Some side to side movement may be needed if the connector is especially snug.

Remove the protective dust cap on the back of the headlamp by grasping it and pulling straight back. This cover keeps dust and moisture out of the headlight housing, make sure not to damage it.

Remove the metal retaining clip by pushing downward and swinging it away from the bulb. Remove the bulb by pulling it straight back, being careful not to strike it against the headlight enclosure.

Insert the new bulb into the headlight assembly and swing retaining clip into place.

Reinstall the dust cap and ensure it is well seated by running your finger around the circumference.

Reattach the electrical connector. Applying a small amount of silicone lubricant gel will ensure the connector does not corrode and is easy to remove the next time. Repeat all steps for the other headlight bulb if needed.

Tips

  • Do not touch the bulb with your bare skin. The oils from your skin could cause the bulb to fail explosively when it reaches operating temperature.
  • Clean the bulb using denatured alcohol if it does get contaminated.
  • Manufacturers recommend you replace your headlights in pairs as the bulbs discharge is reduced over time. Installing two new bulbs will provide you with the maximum light output.

Items you will need

About the Author

Based in Atlanta, Trey Johnson has been writing since 2001 and has been a professional firefighter since 2007. He attends American Military University and is pursuing a Bachelor of Science in fire science management.

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