Do it yourself, change the tail light assembly on your GMC Yukon, produced between the years 2000 and 2006. You will only require a Phillips screwdriver to make this replacement and about 10 minutes of your time. The repair can be very simple if you follow the steps below.
First of all, open the back door of your car and locate the two Phillips screws that hold the tail light assembly, as shown in the image below.
They can be removed very easily using a regular Phillips screwdriver. After you do it, you can grab the tail light and pull it out, towards you. You will then notice, behind it, the three bulb sockets, as you can see in the picture below. Twist the bulbs counterclockwise and take them out in order to be able to release the assembly.
This is the moment when you can install the replacement. Make all the repairs needed, then reinstall the bulbs and the new tail light into the body of the car. Align it properly and secure it with those two screws. This is all you have to do, in order to remove and replace the tail light assembly on your GMC Yukon, the model manufactured between the years 2000 and 2006.