High Mount Third Brake Light Dorman 923-204 - 1ALTL01022

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


This replacement high mount or (3rd) third brake light is just what you need to get your vehicle in good looking form again!


  • Brand New Dorman Brake Light
  • Replaces dealer part number: 15201921, 8-15201-921-0, 8152019210
  • LED bulbs
  • Includes correct wire and connector
  • DOT (Department of Transportation) & SAE (Society of Automotive Engineers) approved
  • Direct replacement
  • Built to strict quality control standards

This high mount stop third brake light makes a great replacement and has good cost savings over a dealer unit.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including 1,3-Butadiene, 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 : Removing the 3rd Brake Light (0:46)
    • Open the tailgate and unplug the lead.
    • Pull the tailgate down open the window and lift the tailgate partially.
    • Remove the clip on the harness.
    • Pull the harness out.
    • Remove the two Phillips screws on the brake light.
    • Pull the light down and out. Unclip it from the truck.
  2. step : Replacing the 3rd Brake Light (3:30)
    • Put the light into place.
    • Run the harness back through the tailgate.
    • Replace the two Phillips screws.
    • Re-clip the harness.
    • Connect the lead.

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Screwdrivers & Related

  • Flat Blade Screwdriver
  • Phillips Head Screwdriver

5.00/ 5.0
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1 Star
Easy peezy!!
Well it’s like this. I needed a part for my suv and found A1. Never heard of them before but with easy navigation on the app and I even called to make sure it was all legit. Great service and easy to work with. Part came and watched there videos on instillation of my part and whalla very happy. Would recommend to my friends and family every time. Keep up great service!! Made me a believer.
November 13, 2018
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Year Make Model Description
2004-2007Buick Rainier Buick Rainier Center High Mount Third Brake Light Dorman 923-204
2002-2009Chevy Trailblazer Chevy Trailblazer Center High Mount Third Brake Light Dorman 923-204
2002-2006Chevy Trailblazer EXT Chevy Trailblazer EXT Center High Mount Third Brake Light Dorman 923-204
2002-2009GMC Envoy GMC Envoy Center High Mount Third Brake Light Dorman 923-204
2002-2006GMC Envoy XL GMC Envoy XL Center High Mount Third Brake Light Dorman 923-204
2003-2008Isuzu Ascender Isuzu Ascender Center High Mount Third Brake Light Dorman 923-204
2002-2004Oldsmobile Bravada Olds Bravada Center High Mount Third Brake Light Dorman 923-204
2009Saab 9-7X Saab 9-7X Center High Mount Third Brake Light Dorman 923-204
Only 2 left in stock
Part #: 1ALTL01022

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Brand #: 923-204

How-to Video:

(07:00 min)