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How to Replace Headlight 99-04 Oldsmobile Alero

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How to Replace Headlight 99-04 Oldsmobile Alero

Created on: 2021-01-16

Watch this video to learn how to replace and service the headlight assembly and bulbs on your 99-04 Oldsmobile Alero.

  1. step 1 :Removing the Headlight
    • Lift the two tabs behind the headlight and pull the light forward.
    • Disconnect the connector by lifting the tabs.
    • Twist the parking light out.
    • Remove the headlight
  2. step 2 :Changing the Bulbs
    • For parking light just pull straight out and replace
    • For other lights remove the cover.
    • Twist the bulb counterclockwise and pull the socket out.
    • Pry up the tab and pull the bulb out.
    • Reverse procedure to reinstall.
  3. step 3 :Replacing the Headlight
    • Remove the plastic.
    • Reconnect the harness and twist in the lights.
    • Push the headlight into position.
    • Push the clips down into place.
  4. step 4 :Adjusting the Headlights
    • Make sure the car is on a flat surface.
    • Turn the inside bolt until the bubble in the level is centered.
    • The outside bolt adjusts the lights left and right. Make sure they are centered.

Tools needed for replacement

  • Ratchets & Related


  • Sockets - Metric

    6mm Socket

Installation Video
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Brought to you by Your source for quality replacement parts and the beset service on the internet.
Hi. I'm Mike from 1A Auto. I hope this how-to video helps you out and next time you need parts for your vehicle think of Thanks.

In this video we are going to show you how to service the headlights on this 2000 Olds Alero. This procedure is the same for 2 and 4-door vehicles as well as '99 to '04 Alero. To just service the bulbs you don't need any tools. If you are going to replace your headlights due to them fogging or being dim or whatever or broken, you'll probably need a 6 millimeter socket to adjust the lights.

These headlights are very easy to service with your hood open, there are two tabs right here. You pull up on them. You may have to pull up just a little bit more and then just go up and down with them a little bit until your light pulls out. Then the light starts to pull forward. Okay, over here on this side you'll see a plug and there's a tab towards the inside of the car. Lift up with your thumb on that tab. That's the tab tight there, just lift up with your thumb and pull that out. Okay, then over here are two terminals. You just twist counter-clockwise. This one you have to press on a tab here, twist counter-clockwise and your whole assembly comes out.

Okay, if you are just looking to service one of these bulbs, they just pull out and the new one pushes back in. The same with this smaller one; pulls out, pushes back in. If you are looking to service your headlight bulbs, take these covers off, twist the bulb counter-clockwise and then pull out. Then disconnect the bulb just by pulling back on the tab. Reconnect, put back in, make sure you are in the right spot, push in the center of it, lock it back in and it is the same thing for this one.

Changing your bulbs is one thing; maybe you are not happy with your visibility at night with the faded and clouded lights. Nice new lights from 1A Auto. They'll go right in. Put it in place a little bit. Start peeling off the plastic. Make sure you plug these lights in first. Larger one goes towards the inside, get it in there correctly, twist it to lock; side marker goes in, twist to lock. Connect your harness over here. If you have trouble with these clips at all, sometimes just spraying a little bit of oil in here will help things go together a little easier.

Okay, once your headlights installed you can see that there's a little level and there's a little bubble of air and you turn the inside one, turn it counter-clockwise to go down. You can see get that bubble in the middle. You want to do this obviously when your car is on a level surface. That should be like that. This adjuster here adjusts your headlights left and right and you obviously want the beams pointing straight forward.

We hope this helps you out. Brought to you by Your source for quality replacement parts and the beset service on the internet. Please feel free to call us toll-free 888-844-3393. We're the company that is here for you on the internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 6mm Socket

1999 - 2004  Oldsmobile  Alero
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