Specifications:

  • Fits the LH (Driver Side)
  • Replaces dealer part number: 25799193
  • 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.
Quality
  • 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.
Value
  • Replacing a discolored, scratched, dull or damaged headlight with a headlight from 1A Auto can increase your resale value by up to 10%.
Safety
  • 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.

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. Please keep your invoice for proof of this warranty.

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

5.0 / 5.0
1 Review
5 Stars
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Perfect fit !
Does headlamp assembly was identical to my original equipment Lamp assembly at a little less than one-third of the cost. An overall great experience. I'll be back.
August 12, 2017
Purchased
6 months ago
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How-to Video:

(06:23 min)

Tools List:

    Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket



This part replaces:

  • Hollander 114-01014L
  • OE # 25799193
  • Partslink GM2502283
  • DEPO 335-1147L-AF

Vehicle Fit

  • 2007 GMC Sierra 1500 New Body Style Headlight Driver Side
  • 2008-2013 GMC Sierra 1500 Headlight Driver Side
  • 2007 GMC Sierra 2500 HD New Body Style Headlight Driver Side
  • 2008-2014 GMC Sierra 2500 HD Headlight Driver Side
  • 2007 GMC Sierra 3500 New Body Style Headlight Driver Side
  • 2008-2014 GMC Sierra 3500 Headlight Driver Side
  • 2011-2014 GMC Sierra Denali 2500 HD Headlight Driver Side
  • 2011-2014 GMC Sierra Denali 3500 HD Headlight Driver Side
Part #: 1ALHL01372

Ships Same Day for orders placed by 4 P.M. ET

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1A Auto Parts

Customer Feedback

"Thanks for the fast reliable service. Great price, and the headlights were as good as oem or better!!! Keep up the good work..."
- Dwuan M.
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