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How to Replace Front Lower Side Marker 94-99 GMC K1500

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How to Replace Front Lower Side Marker 94-99 GMC K1500

Created on: 2017-05-10

How to repair, install, fix, change or replace a broken, damaged, cracked, faded, cloudy, or chipped signal light on 94, 95, 96, 97, 98, 99 GMC Sierra K1500

  1. step 1 :Removing the Light
    • Remove the four Phillips screws from the light
    • Pull the headlight out
    • Disconnect the headlight wiring harness
    • To remove the side marker light, use a 13mm wrench
  2. step 2 :Servicing the Bulbs
    • Twist the bulb socket counterclockwise out of the light
    • Pull the bulb off of the socket
    • Push on the new bulb
    • Twist the bulb clockwise into the light
  3. step 3 :Installing the Light
    • Connect the headlight wiring harness
    • Line the side marker up into place
    • Tighten the four Phillips screws to the light

Tools needed for replacement

  • Screwdrivers & Related

    Phillips Head Screwdriver

  • Wrenches - Metric

    13mm Wrench

Installation Video
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Hi, I'm Mike from 1AAuto. We've been selling auto parts for over 30 years! We're dedicated to delivering quality auto parts, expert customer service, and fast and free shipping, all backed by our 100% satisfaction guarantee. So visit us at, your trusted source for quality auto parts.

In this video, we're going to be working with our 1996 GMC Sierra. We're going to show you how to remove and replace your vehicle's front side marker lights.

If you like this video, please click "subscribe." We have a ton more information on this and many other vehicles. If you need these parts for your truck, you can follow the link down in the description over to

Here are the items you'll need for this repair: 13mm wrench and Phillips head screwdriver

Remove the four Phillips head screws on the outside edges of your turn signal. We'll do this using a Phillips head screwdriver. Once the screws are out, you can pull the housing forward and remove the electrical connectors. Repeat these steps on the opposite side.

To remove the lower turn signal, you'll want to turn the bulb socket sideways and remove it. It comes out just like a reflector does, with two 13-millimeter nuts or 1/2-inch nuts. You'll want to remove those with a ratcheting wrench if you have access to one. Otherwise you'll just have to work them off with a regular box or open-end wrench. Repeat these steps on the opposite side.

Here we have our old side marker lights that we removed from our truck and our new parts from As you can see, these parts are exactly the same size and shape. Our old ones are faded and foggy. They're not going to let a lot of light through. This one's cracked. It looks like it's been hit with something. Our new ones are in great shape, nice and bright and clear. Same two bulb mounting location on the back of all of these, along with the same bulb socket on all four pieces. If your old side marker lights have cracked, broken, or faded, these new parts from 1A Auto are going to go in direct fit, just like your original equipment and fix you up right.

Install the light into the side marker, as well as your two 13-millimeter nuts. Tighten those down with a 13-millimeter ratcheting wrench. Repeat these steps on the opposite side.

Reinstall the lights into the turn signals. Install them into the grille, along with the four Phillips head screws. Repeat these steps on the opposite side.

Thanks for watching. Visit us at for quality auto parts, fast and free shipping, and the best customer service in the industry.

Tools needed for replacement:

    Screwdrivers & Related

  • Phillips Head Screwdriver

  • Wrenches - Metric

  • 13mm Wrench

1994 - 2000  GMC  Yukon
1994 - 1999  GMC  C1500 Truck
1994 - 2002  GMC  C3500 Truck
1994 - 2000  GMC  C2500 Truck
1994 - 1999  GMC  K1500 Truck
1994 - 2000  GMC  K2500 Truck
1994 - 2000  GMC  K3500 Truck
1994 - 1999  GMC  Suburban C1500
1994 - 1999  GMC  Suburban K1500
1994 - 1999  GMC  Suburban C2500
1994 - 1999  GMC  Suburban K2500
1994 - 2001  GMC  C3500 Truck
1994 - 1994  GMC  Jimmy
1995 - 1998  GMC  Yukon
1999 - 1999  GMC  Yukon
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