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How to Change a Headlight on a 2012 GMC Terrain

I noticed the low beam in my 2012 GMC Terrain burnt out. How hard is it to change the headlight myself?

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Kathryn Mae Kurlychek · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
It actually isn’t too difficult to change a headlight bulb right in your own driveway! You’ll just need a couple of basic tools, a new head bulb, and some elbow grease.
To change the headlight bulb in a GMC Terrain, you’ll first need to gain access to your headlight assembly. You can do this through an access port under your front wheel well, but you’ll need a hex wrench to get it open.
The opening is pretty small, but if you reach your hand inside, you’ll feel the back of the headlight bulb, which is protected by a plastic cover. To get to the bulb itself, twist the cover counterclockwise until it pops off.
From there, you’ll want to do the following:
  • Remove the headlight bulb by twisting it counterclockwise
  • Push on the clip to release the bulb from the wire
  • Clip in your new bulb (make sure to wear gloves when handling your headlight bulb!)
  • Reattach the plastic cover to the back of the headlamp
  • Screw the access cover back on
  • Test your headlight
Once you’ve confirmed the headlight is working as it should, you’re good to drive!
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