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How to Replace Window Regulator 99-04 Oldsmobile Alero

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How to Replace Window Regulator 99-04 Oldsmobile Alero

Created on: 2021-01-16

If your 99-04 Oldsmobile Alero needs a new window regulator, check out this video and you can learn how to replace it yourself!

  1. step 1 :Disconnect the battery
    • Use an 8 mm wrench to disconnect the negative battery cable.
  2. step 2 :Remove the door panel
    • Pry up the little plastic cover under the door pull.
    • Remove the Phillips screws now exposed.
    • Pull the triangular panel up at the top inside corner of the door.
    • Disconnect the speaker lead if you have it.
    • With a flat blade screwdriver, pry up the reflector.
    • Remove the exposed Phillips screw.
    • Use a putty knife to unclip the door panel.
    • Disconnect the wiring harness connections
    • Carefully peel back the water shield.
  3. step 3 :Remove the power window regulator
    • Use your 10 mm socket to disconnect the window from the regulator.
    • Use painter’s tape to secure the window up and out of the way.
    • Unbolt the window regulator and bracket securing the window motor with your socket and ratchet.
    • Remove the window regulator bracket with your 10 mm socket and ratchet and disconnect the cable to the regulator.
    • Unclip the top regulator cable.
    • Remove the regulator.
  4. step 4 :Install the new power window regulator
    • Feed the window regulator into the door panel
    • Bolt the motor and regulator brackets and rails into place.
    • Clip the cables in.
    • Untape the window and lower it into the regulator clips.
    • Secure the 10 mm nuts with your socket and ratchet.
  5. step 5 :Install the door panel
    • Replace the water shield
    • Connect all the wiring harness connections.
    • Clip the door panel on and replace all the Phillips screws.
    • Connect the speaker lead and snap the triangle panel back on in the upper inside corner of the door.
    • Snap the reflector back on.
    • Clip the door pull cover back into place.
  6. step 6 :Connect the battery
    • Use an 8 mm wrench to connect the negative battery terminal

Tools needed for replacement

  • General Tools

    Putty Knife

  • Ratchets & Related

    Socket Extensions


  • Screwdrivers & Related

    Flat Blade Screwdriver

    Phillips Head Screwdriver

  • Sockets - Metric

    10mm Socket

  • Wrenches - Metric

    8mm Wrench

Installation Video
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Brought to you by, your source for quality replacement parts and the best service on the Internet. Hi, I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20 plus years experience restoring and repairing cars and trucks like this to show you the correct way to install parts from The right parts, installed correctly ... that's going to save you time and money. Thank you and enjoy the video.

In this video we're going to show you how to replace a window regulator on this 2000 Olds Alero. This is obviously a 2 door. The procedure is the same for the passenger's side. It's also quite similar for the front doors on a 4 door car. Tools you'll need are 8mm wrench, small flat blade screwdriver, Phillips screwdriver, and a 10mm socket and ratchet with extension. Use an 8mm wrench and disconnect your negative battery cable. You're going to start under your door pull. There's a little trap door here, and either from the top or bottom, just pry that off and there's 2 Phillips screws in there. And we'll speed it up here a little bit here as I just remove those screws. I'll use fast-forward quite often when I'm just doing monotonous tasks like this. Now right up here you just pull on this panel ... comes off. If you have this speaker here, just use a screwdriver, pry up on this tab and disconnect it. Also down in this corner, use a little screwdriver and pull this reflector out. And inside here there's a Phillips screw.

Once you have that out ... a door panel clip tool or a putty knife and start anywhere. Slide it in there and then slide it until you feel a clip ... And the door panel clip tool you go around a clip and then pull. That screw comes out of the car. You can see back in here ... you can see the other clips. Then just work your way all the way around the door. Once you have the door pretty loose, that comes out and lifts up. Your door lock ... just pull back on this tab, disconnect it. And then these 2 switches just have tabs on them. I'm just going to reach underneath and pull that one off. This mirror switch... a little more difficult. There's a tab right here ... use my little screwdriver. I can just take my Phillips screwdriver, force it up in there, pry that down and that released. And the last one here is my trunk switch, which again, just use your screwdriver. There's a locking tab right here; pull it off. Carefully remove the water shield. This is the new regulator from 1AAuto. You can see it's a cable style regulator, and what happens on these regulators and the originals is often the cable breaks. That's usually when you hear the popping and then the grinding noise. Normally once your cable breaks, you can actually reach in. My original regulator is fine, so everything is solid. But when your regulator breaks, what you can usually do is reach in and grab the window, and move the window up and down by hand. You want to move the window up and down by hand until you can see this 10mm bolt here. And then there's another 10mm bolt right here.

Then you want to remove those. Those hold the window to the regulator. After you remove those 2 bolts, you can grab your window and pull it up. You can either remove the window as you see me do here, or something easier is just put it up into the channel and use some painter's tape and tape it up to the frame, just to make sure it doesn't fall down while you're working on it. Now we're going to remove this plate here. There's a little pin that hooks the cable on the regulator. Push that through, and then remove these three 10mm nuts. Just speed it up here as you see me remove those 3 nuts, and then that plate just pulls back and off to the side. Now you're going to remove two 10mm bolts here and here. Disconnect your regulator or your window motor. Push up on a tab there and then pull the connection apart. Now remove that middle bolt that holds the window motor plate to the door. Now loosen the 2 upper bolts that hold the regulator. Then you loosen these 2 bolts u[ here. There's another clip right here. Just squeeze the ears on it, pull it through, up. Then lift up here, then bring the regulator like that. My new regulator from 1A Auto. I did install my 2 upper bolts, this right over here, then hang this bolt right up here. Then bring this all the way up and hang that bolt right there. Start this bolt in. I'm going to speed it up here. Start the bolts in first. Make sure you get them all in and threaded in.

Then tighten them up. You want to tighten them nice and firm, and then you put that middle plate back in and tighten up those nuts. Then just a small difference... the motor on this... the connector is on a little harness. So you just kind of pull that around and connect it right there. I've got the battery hooked up and a keyhole... reconnect my switch. Just bringing these down a little bit so I can see the holes a little better. Speed up as I put the window back in place. And again, if you just taped yours up to the frame, just remove the tape and then slide it down to the window regulator. Goes in there. Put that one in there. Make sure it goes down correctly. Now I've started those 2 bolts that hold the regulator to the window. Just putting that piece of weather strip back in place that I took apart to get the window out. Then tighten up those 2 bolts, and you can test it. And you're pretty much ready to put the door panel back on. The last 2 things I'm going to do... take these clips, put them right in there. Put this clip here. Now carefully put your water shield back in place and you're ready to put the door panel back on. Plug in our lock switch right up here. And our mirror ... push this in a little bit. Power window switch... this one goes down to our power lock switch, and then make sure you push the top of the door panel in. Make sure this speaker lead is up out of there. Push the door panel down into that channel. You may have to use your putty knife or your clip tool to force the upholstery in there a little bit. You want to peek back in here, make sure your pins are going in where they should. Fast forward through reinstalling those 3 Phillips screws. Put your reflector back in. Put this panel back on... goes back in here. Put that back on. Then reconnect your negative battery cable.

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

Tools needed for replacement:

    General Tools

  • Putty Knife

  • Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver
  • Phillips Head Screwdriver

  • Sockets - Metric

  • 10mm Socket

  • Wrenches - Metric

  • 8mm Wrench

1999 - 2005  Pontiac  Grand Am
1999 - 2004  Oldsmobile  Alero
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