1990 GMC K3500 Truck Sierra SLE Driver Side Headlight Assembly DIY Solutions LHT01278

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Hi, I'm Mike Green from 1A Auto. Today, I'm going to show you how to remove and replace the headlights on this vehicle. It's a 1999 Suburban. It's generally the same as a 1988 to 99 Chevy or GMC truck, as well as the '92 to '99 Suburban, Yukon, the 2-door Jimmy full sized, and the Tahoe. With that, the first thing we're going to do is open up the hood to access the headlight.
If you're looking to replace your light bulbs, locate these two five millimeter studs. Remove them with socket or a wrench. Your light comes out. You have access to the back of the headlights. You can just unplug the low beam and the high beam and replace the bulbs. If you're looking to replace the headlight assemblies, stay with us. We'll go into more detail on that. In behind there's a mounting plate; if your headlight's been damaged, normally this mounting plate is damaged also. If we want to replace the whole headlight assembly, we'll have to remove the grill.

To do that, what we do next is remove the parking light. It has four Phillip's screws that we take out. Okay, let's speed this up a little bit. You remove the light. You just click the thumbs and twist and pull the lights out. Your parking light's removed; the opposite parking light. There are ten screws which we're going to quickly show you on the grill. These screws hold the grill in, two behind the parking lights, two in the middle, two behind the opposite side parking lights, and then four up top. I got the 10 bolts out. You can see the headlights are still in. The marker lights are still in, but they are unplugged. Once those bolts are out, you can pull it forward. Just make sure everything comes apart in here. Bulbs and stuff are clear. The grill's out, separate.

You can easily unbolt your headlight assemblies. From here we're looking at the driver's side headlight assembly, we'd remove this bolt, this bolt, this bolt, and this bolt. Going to unplug; your headlight's free. This is the new headlight assembly. Okay, and quadruple time. Shops charge 50 bucks an hour for this stuff. This has got to be worth 200 bucks an hour anyways. Look at that hand movement. I don't even know if tools move that fast. Now that the light's bolted in, we can connect the headlight harnesses. Once the headlight harnesses are connected, we'll reach into the cockpit real quick. Test the low beams, click on the high beams. Oh! Everything looks good.

We can put the grill back on, just reverse your procedure. Tilt it in there. Pull the lights through first, each side. Tilt it in. There's a little harness in the center, too. Make sure that doesn't get pinched in there. Push it up in. The top, the plastic lip goes up over the top of the sheet metal. Once everything looks right, we'll bolt it back in. You're ready to go. Ten they're seven millimeter bolts. We've re-installed the grill. We need to reinstall, we need to plug in the markers and install the parking lights. We're now back in close-up. This you put in and you twist. These go in just like they came out. You get them to click as they lock into place. A shot of espresso or two.

There I am standing in front of the truck. My lips aren't moving. I am talking to you through the magic of computers. We hope this video helped you out how you can see we got our lights back in. Our grill's on and our parking lights.

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