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How do you Change, Replace, or Install 1999-2006 GMC Sierra Corner Light / Turn Signal Replacement





Tools required:
  • None


NOTE: If you are replacing the turn signal assembly due to collision damage, it may be a good idea to replace the headlight assembly, as well. In this project, we will be removing the headlight, so it will never be easier to replace than right now!

Step 1: Open the vehicle's hood.

Step 2: Twist, lift, and remove the two mounting tabs that secure the headlight in place.

Step 3: Pull the headlight out and disconnect the wiring harnesses attached to the back of the assembly.

Step 4: Depress the retaining lever (located to the outer edge of the parking light), and pull the assembly through the front of the vehicle.

Step 5: Twist and remove the bulbs/sockets from the parking light assembly.

Step 6: Insert the bulbs/sockets into the new parking light, and mount it by engaging the retaining clip.


Insert the inner tab first, and then snap the assembly into place.

Step 7: Reconnect the wiring harnesses to the headlight assembly, and secure it by re-engaging the mounting tabs.




Please Note

While we are more than happy to create these installation guides for your benefit, we cannot maintain any liability regarding the part, or the driving experience, once the part has been replaced/installed. We always guarantee the quality of the parts we provide, but the installation liability rests solely on the installer.

And, though we are always here to answer your questions, please note that our technicians created these guides for your convenience, and cannot provide assistance beyond this guide.


If you're looking for a good deal on the parts mentioned in this instructional guide, be sure to check these out:

Years 00-06, OEM #:15199560 - Partslink # GM2520174
Includes Signal/marker & Running Lamps, Except Denali
$15.95
Years 00-06, OEM #:15199561 - Partslink # GM2521174
Includes Signal/marker & Running Lamps, Except Denali
$15.95
Years 00-06, OEM #:15199560 - Partslink # GM2520174
Includes Signal/marker & Running Lamps, Except Denali
$15.95
Years 00-06, OEM #:15199561 - Partslink # GM2521174
Includes Signal/marker & Running Lamps, Except Denali
$15.95
Years 00-06, OEM #:15199560 - Partslink # GM2520174
Includes Signal/marker & Running Lamps, Except Denali
$15.95
Years 00-06, OEM #:15199561 - Partslink # GM2521174
Includes Signal/marker & Running Lamps, Except Denali
$15.95
Years 99-06, OEM #:15199560 - Partslink # GM2520174
Includes Signal/marker & Running Lamps, Except Denali Or C3
$15.95
Years 99-06, OEM #:15199561 - Partslink # GM2521174
Includes Signal/marker & Running Lamps, Except Denali Or C3
$15.95

These Part Change / Installation Instructions Apply to
06 2006, 05 2005, 04 2004, 03 2003, 02 2002, 01 2001, 00 2000, 99 1999 GMC Sierra Corner Light / Turn Signal Replacement Instructions
- POPULAR GUIDES: GMC SIERRA -

2003-2007 GMC Sierra Fog Light Replacement

1999-2006 GMC Sierra Front Window Motor Replacement


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