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Vehicle Fit


  • Fits LH (Driver Side) OUTER
    • Quarter Panel Mounted
  • Replaces dealer part numbers: 20914386, 22802421
  • Includes lens & housing
  • Direct replacement
  • Built to strict quality control standards
This tail light is a great replacement and has good cost savings over a tail light from the dealer.

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.

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.

  1. step : Remove your tail light assembly (0:31)
    • Pop the tailgate.
    • Pry off the plastic cover on the side of the tail light.
    • Remove the 10 mm bolts.
    • Pry out the tail light assembly and disconnect the wiring harness.
    • Remove the bulbs and either replace them or transfer them to the new assembly.
  2. step : Install the new tail light assembly (1:17)
    • Connect the wiring harness.
    • Clip the tail light into the car.
    • Bolt down the bracket with your 10mm socket and ratchet.
    • Snap that plastic cover back on over the bolts.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket

5.00/ 5.0
2 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Was a great fit for the vehicle. The video was helpful.
February 13, 2017
GMC Terrain Taillight
Taillight delivered as expected, on schedule and as quoted. Installation video was spot on, very helpful, took me longer to find the tools than do the job! Thanks, will come to A1 for future needs.
February 16, 2017
Will this fit my car? Add a vehicle to make sure
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Year Make Model Description
2010-2017GMC Terrain GMC Terrain Outer Tail Light Driver Side
Part #: 1ALTL01670

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:

(01:55 min)