2010-2013 GMC Terrain Headlight Driver Side

Part Details

  • Location: Driver Side

This part replaces:

  • HOLLANDER 114-01276L
  • PARTSLINK GM2502350
  • OE # 20997470

  • New


  • Fits LH (Driver Side)
  • Replaces dealer part number: 20997470
  • Includes lens & housing
  • Bulbs not included
  • Direct replacement
  • Built to strict quality control standards
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.
  • See a brief YouTube video on the production and quality testing of our lighting products.
  • Value
    • 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.

    Lifetime Warranty

    Effective June 23, 2014: This item is backed by a manufacturer's 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. Service your headlight bulbs
      • Remove the T20 Torx bolt behind the front bumper.
      • Twist the cover to remove it.
      • Now you can reach in and disconnect the bulbs and change them.
      • Twist the cover back into place and replace the T20 Torx bolt.
    2. Removing the headlight assembly
      • Use a flat blade screwdriver to pry up the push clips in the plastic cover above the headlight assembly in the engine bay.
      • Remove the T20 bolts over the grille.
      • Remove the four fasteners in the wheel well, two T20 Torx bolts and two push clips.
      • Reach behind the inner fender and pull out the bumper cover
      • Unbolt the exposed 7 mm and 10 m bolts.
      • Lift the two tabs on the top of the headlight and pull the assembly out.
      • Disconnect the wiring harness.
    3. Install the new headlight assembly
      • Transfer the bracket and bulbs from your old assembly to your new one using your T20 Torx driver.
      • Insert the headlight assembly into its mounting points and secure with the three 7 mm bolts and one 10 mm bolt.
      • Secure the bumper cover by replacing the two T20 bolts and all the push clips, as well as the two T20 bolts on the top of the grille.

    How-to Video:

    (06:44 min)

    Tools List:

      Ratchets & Related

    • Ratchet

    • Screwdrivers & Related

    • Flat Blade Screwdriver
    • Phillips Head Screwdriver

    • Sockets - Metric

    • 10mm Socket
    • 7mm Socket

    • Torx Drivers & Sockets

    • T20 Torx Driver

    This part replaces:

    • HOLLANDER 114-01276L
    • PARTSLINK GM2502350
    • OE # 20997470

    Vehicle Fit

    • 2010-2013 GMC Terrain Headlight Driver Side
    Save 54%
    List: $386.73 Save: $207.78
    Part #: 1ALHL02139

    - Ships Same Day for orders placed by 5 P.M. ET


    Check Shipping Rates

    We're here to help

    Customer Feedback

    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.
    Read More
    Free Shipping!


    hablamos Español:866-401-3393
    For Orders Placed By 5pm Est