How to Replace a Chevy Avalanche Headlamp

Broken headlights are a common problem in older Chevrolet Avalanches. Once one of your headlights fails, you have to replace it as soon as possible. Driving with a broken headlight at night can cause serious problems, like an accident or a ticket.

The good news is you can buy an OEM replacement headlight specifically designed for your Avalanche and install it at home with this simple step-by-step tutorial. The process will take you about an hour. Doing it yourself is a few hundred dollars cheaper than having a shop replace it for you.

How to Find an OEM Replacement Headlamp For Your Avalanche

Replacement gm headlight

There are two different types of places that sell genuine OEM replacement headlamp assemblies: GMC dealers and authorized online OEM parts sellers (like You’ll typically pay a lot more for a headlamp assembly from a dealer than you would from an authorized online shop because dealers mark up their prices by about 30%. Some online sellers offer genuine OEM parts at wholesale pricing.

For example, you can find an OEM headlamp assembly for your Avalanche for a steep discount at Here’s a list of our top selling headlamp assemblies designed to fit Avalanche models:

  • Part No. 10396913: For 2005-2006 Avalanche 1500 and 2500 models (left mirror)
  • Part No. 10396912: For 2005-2006 Avalanche 1500 and 2500 models (right mirror)
  • Part No. 22853025: For 2010-2013 Avalanche models (left mirror)
  • Part No. 22853026: For 2010-2013 Avalanche models (right mirror)

What Tools Do You Need?

Gather the following tools before you begin:

  • Small screwdriver
  • 7mm socket
  • 10mm socket
  • 1/4” drive 6” extension
  • ¼” swivel
  • ¼” drive ratchet
  • 10mm combo wrench

Step-by-Step Tutorial

Chevy avalanche

Image Credit: TruckTrend

This process takes about an hour, give or take. This list of instructions applies to the 2007 Avalanche, but they’re general enough for you to be able to follow them with another Avalanche.

  1. Turn the wheels all the way to the right if you’re replacing the headlamp on the driver’s side or all the way to the left if you’re working on the passenger’s side.
  2. Open the hood and remove all six bolts along the top of the grille.
  3. Look in the wheel well and you’ll see 7mm screws, push pins, and pop-in pins along the edge. Remove all of them.
  4. Remove the wheel well lining.
  5. Inside, you’ll see two 10mm bolts up into the fender. Remove them both. When you do this, the bumper mounting bracket (an L-shaped plastic part) will come out.
  6. There’s a third 10mm bolt holding the headlight in, and it’s located behind the bumper. Pull down on the bumper cover and then use the extension and swivel to take it out.
  7. Go over to the front and gently pull the headlight out. You may need to pull the corner of the grille to get the headlight out. Be careful not to scratch the bumper with the snaps along the edge of the headlight.
  8. Disconnect the wiring harness.
  9. Install the new headlight in the reverse order.

It’s a simple yet time-consuming project. Be sure not to lose any of the bolts you remove. If you have any questions or if you need assistance, feel free to contact us!