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

  • Fits LH (Driver Side)
  • Replaces dealer part number: 16526135
  • Includes lens, housing, and mounting panel
  • Bulbs not included
Note: Only fits new body style truck models.

This headlight is a great replacement and has good cost savings over a headlight from the dealer.
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 Chromium (Hexavalent Compounds), which is 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

4.60/ 5.0
5 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2000 GMC Sierra Headlight Assembly
To date, this purchase has been fine. Fortunately, headlight assemblies are easy to take out and put in, due to the locking pins. The plastic of these assemblies worry me, as they can crack/break easily in certain areas. However, this assembly I purchased has been fine. I merely took it out of the box, popped the hood, took the pins out, and replaced assembly. You may have to adjust the light beam up or down, etc, with the screws. I am pleased and hope that it holds up over time.
February 25, 2017
2005 drivers headlight
Perfect fit and it works great... I highly recommend!!!
December 3, 2017
It fit and looks exactly as it should. Also, it came with both bulbs. I cant remember if it said it did or not in the description. I use 1aauto for many items on my vehicles that need replacing. I will continue to do so after this purchase.
March 1, 2018
Just Like a New Car
We replaced a clouded headlight with this one and transferred the new high beam light bulb over to it. It is extremely easy to replace (I watched the installation video), even by someone who is not auto-repair savvy. Excellent product and price, along with fast delivery.
March 30, 2018
Fast shipping Great service
I love your Store,shipping is pretty fast and I love the parts and I plan on buying more in the future, thank you guys so much.Jeff
September 27, 2018
Will this fit my car? Add a vehicle to make sure
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Year Make Model Description
1999-2000GMC Sierra 1500 GMC Sierra 1500 Headlight Driver Side
2001GMC Sierra 1500 GMC Sierra 1500 Headlight Driver Side (excluding C3 Models)
2002-2006GMC Sierra 1500 GMC Sierra 1500 Headlight Driver Side (excluding Denali Models)
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Headlight Driver Side
2001-2003GMC Sierra 1500 HD GMC Sierra 1500 HD Headlight Driver Side
2005-2006GMC Sierra 1500 HD GMC Sierra 1500 HD Headlight Driver Side
2007GMC Sierra 1500 HD Classic GMC Sierra 1500 HD Classic Headlight Driver Side
1999-2004GMC Sierra 2500 GMC Sierra 2500 Headlight Driver Side
2001-2006GMC Sierra 2500 HD GMC Sierra 2500 HD Headlight Driver Side
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic Headlight Driver Side
2001-2006GMC Sierra 3500 GMC Sierra 3500 Headlight Driver Side
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic Headlight Driver Side
2000-2006GMC Yukon GMC Yukon Headlight Driver Side (excluding Denali Models)
2000-2006GMC Yukon XL 1500 GMC Yukon XL 1500 Headlight Driver Side (excluding Denali Models)
2000-2006GMC Yukon XL 2500 GMC Yukon XL 2500 Headlight Driver Side
Part #: 1ALHL00297

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(03:05 min)