• Fits the RH (Passenger Side)
  • Replaces dealer part number: 25799194
  • Includes lens and housing
  • Bulbs not included
  • Fits New Body Style Models only
    • Does NOT fit Classic Body Style Models
NOTE: New Body Style has a smooth door skin. Classic Body Style has a crease down the center of the door shell.

This headlight is a great replacement and has good cost savings over a headlight from the dealer.

Fit guaranteed

  • This headlamp will install just as your original does. You can use your existing hardware and wiring harnesses.
  • Save time and money with a direct fit. No trips to the hardware store or extra time trying to get the wiring to hookup.


  • 1A Auto has the most comprehensive warranty.
  • If this headlight should fail to provide satisfactory performance you may exchange it.
  • 1A Auto Headlights are guaranteed to pass inspections in all 50 states. DOT (U.S. Dept. of Transportation) and SAE (Society of Automotive Engineers) approved.


  • Replacing a discolored, scratched, dull or damaged headlight with a headlight from 1A Auto can increase your resale value by up to 10%.


  • A new headlight can provide you with up to 50% more illumination than a dull, yellowed, sandblasted, broken or scratched headlight.
    • 1A Auto headlights can help you see farther at night and in poor driving conditions.
    • A new headlight from 1A Auto can make you more visible to other traffic during heavy rain or wintry weather..
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

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 www.P65Warnings.ca.gov.

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:

Unless otherwise noted, our lights do not include bulbs, though occasionally lighting manufacturers do include bulbs in the lights. If you happen to receive a lighting product (Headlight, Tail light, parking light, fog light etc.) that comes with the bulbs, the bulbs are not covered under our warranty. Our warranty applies only to the light assembly..

  1. step : Removing the Grille (0:39)
    • Pry out the eight plastic clips from the trim panel using a flat blade screwdriver
    • Remove the four 10mm from the grille with the socket and ratchet
    • Disconnect the four grille clips with the needle nose pliers
    • Pull out the grille
  2. step : Removing the Headlight (2:13)
    • Remove the two 10mm bolts from the headlight bracket
    • Pull back the wheel well panel
    • Remove the 10mm bolt from the headlight bracket behind the wheel well panel
    • Pull the headlight out
    • Disconnect the headlight wiring harness
  3. step : Replacing the Headlight Bulbs (3:20)
    • This step is only necessary if you are replacing the headlight bulbs
    • Turn the base of the bulbs counterclockwise
    • Remove the old bulbs
    • Disconnect the wiring harnesses from the old bulbs
    • Connect the new bulb to the wiring harness
    • Insert the new bulbs
    • Turn the base of the new bulbs clockwise
  4. step : Installing the New Headlight (4:19)
    • Reconnect the wiring harness to the headlight
    • Line up the bolt holes on the headlight bracket to the bolt holes on the vehicle
    • Replace the three 10mm bolts into the headlight bracket
  5. step : Reattaching the Grille (5:12)
    • Push the grille tabs onto the clips
    • Replace the grille bolts
    • Put the trim panel into place
    • Lock the trim panel into place with the plastic clips

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket

4.8 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Replaced passenger side headlight on 2011 Sierra SLT Part was a match to the broken one. Didn't price one from a dealer but I'm sure it would have been more.
June 18, 2018
3 months ago
headlights for GMC
I really do like my order, which was send out the very next day and I got it at post office box in last a week. Since then, my son-in-law replaced them. It was awesome....headlights really shine in the night; that I don't worried about traveling in darkness with very low lights.
February 13, 2018
7 months ago
Very satisfied customer
I have ordered several items from 1Auto and I have had no problems. Good quality products, good customer service and good delivery.
February 3, 2018
8 months ago
Headlight Assy
This headlight assy was an exact fit. The construction is very strong and the price was great. The light matches the OEM one. I would buy this item again.
February 13, 2017
over 2 years ago
good product
no problems good product fast delivery just a pain to install but thats gmc fault
February 2, 2017
1 year ago
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Vehicle Fit

Year Make Model Description
2007GMC Sierra 1500 GMC Sierra 1500 New Body Style Headlight Passenger Side
2008-2013GMC Sierra 1500 GMC Sierra 1500 Headlight Passenger Side
2007GMC Sierra 2500 HD GMC Sierra 2500 HD New Body Style Headlight Passenger Side
2008-2014GMC Sierra 2500 HD GMC Sierra 2500 HD Headlight Passenger Side
2007GMC Sierra 3500 GMC Sierra 3500 New Body Style Headlight Passenger Side
2008-2014GMC Sierra 3500 GMC Sierra 3500 Headlight Passenger Side
2011-2014GMC Sierra Denali 2500 HD GMC Sierra Denali 2500 HD Headlight Passenger Side
2011-2014GMC Sierra Denali 3500 HD GMC Sierra Denali 3500 HD Headlight Passenger Side

This part replaces:

  • Hollander 114-01013R
  • Partslink GM2503283
  • DEPO 335-1147R-AF
  • OE # 25799194
Part #: 1ALHL01373

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:

(06:23 min)