GMC Lighting Kit - 1ALHT00233

Warranty & Shipping
How-To & Tools
Product Reviews
Vehicle Fit

Part Details

  • Quantity:   4 Piece Set
  • Kit Includes:
      (2) Parking Lights
      (2) Headlights


  • Brand New Lighting Kit
  • Comes as a 4 Piece Kit
    • Fits LH (Driver Side) & RH (Passenger Side)
  • Direct replacement
  • Built to strict quality control standard
Direct Fit Replacement

Direct fit replacement for OEM assembly

Trouble-free Installation

Uses same wiring as original assembly.  No cutting or splicing required.

DOT and SAE Compliant

Meets federal regulations for on-road use

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

Bulb Note:

These lights do not include bulbs.  If you happen to receive a product with bulbs, the bulbs are for testing and not covered under our warranty.  Our warranty applies to the light assembly only.

  1. step : Handling the Bulbs (0:50)
    • Note: DO NOT TOUCH the bulbs- the oil from your fingers will burn into the light and foul your bulb.
    • Clean with rubbing alcohol and a soft cloth if the bulbs do get touched.
  2. step : Remove the old headlight assembly (0:50)
    • Pop the hood and secure it.
    • Remove the two anchor pins securing the head light assembly by twisting and pulling them up.
    • Remove the head light assembly.
    • Unplug the bulbs and harness.
  3. step : Install the new headlight assembly (1:35)
    • Plug in your bulbs, replacing them with new ones if necessary.
    • Reconnect the harness by clipping it in.
    • Line up the head light assembly and clip it into place.
    • Put the two pins back into place to secure the head light assembly.
    • Close the hood and enjoy your new 1A Auto headlights.

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

4.25/ 5.0
4 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Price was right.. fit perfectly BUT
So I would be THRILLED with these items except for the following two issues 1 - There were NO instructions on how to adjust the headlight beams Up/down. 2- trying to wiggle the unit so that the holes align and the guide pins fall into place actually was enough to break the black plastic cradle inside the unit in half. I had to crazy glue it back together. Thats really bad in my opinion because it REQUIRES that you wiggle it until the pin falls into place.. 3-The plastic retaining ring that holds the headlight bulb in place was not attached and was clearly defective.. again crazy glue to the rescue...
January 19, 2018
Good product, good price
Came with bulbs installed for high and low height adjuster was broken and they sent me a new one immediately.
March 18, 2018
Glad I pulled teh trigger on these!
I had ordered a les expensive set; however once they arrived I knew I had mad a mistake by trying to do it on the cheap. I sent those back and ordered these as my next try. No need for a 3rd try. These are as close to factory as one can get, installed easily, and adjusted easily. I do not think they adjust the bulbs at all as mine were aimed right at the ground when installed.... even but right at the ground. The adjustment screws made it very easy to put the beams where I wanted them in less than a minute. Good buy and they look great!
October 16, 2018
Good product, great customer service
My headlights were too far gone to save. This set of four were reasonably priced. They’re a little different than OEM, but look the same and work great. One unit had a broken component, but 1A shipped a replacement immediately. 1A YouTube video made the replacement easy.
November 17, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Will these fit the non Denali model gmc vehicle with no modifications?
Strapp W September 5, 2018
These are not listed to fit the non-Denali models.
Christa R September 5, 2018
Year Make Model Description
2001GMC Sierra 1500 GMC Sierra 1500 C3 4 Piece Set Lighting Kit
2002-2006GMC Sierra 1500 GMC Sierra 1500 Denali 4 Piece Set Lighting Kit
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Denali 4 Piece Set Lighting Kit
2001-2006GMC Yukon GMC Yukon Denali 4 Piece Set Lighting Kit
Part #: 1ALHT00233

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(03:05 min)