Repairing the Rear Tail Lights The plastic clip that holds the bulb assembly to the tail light housing wasn't working well. I couldn't locate the correct replacement at the local auto parts store. I found a 5406PT bulb base assembly made by Pacific Industrial Components, Inc. that worked, though: First, the old insert needs to be removed: Slide the replacement assembly in through the front: Shove it far enough so there is enough bulb clearance: Here is the new bulb base assembly mounted in the tail light housing: This article comes from Fix GMC: http://www.fixgmc.com/ The URL for this story is: http://www.fixgmc.com/art28.html Copyright 2008 FixGMC.com. Read our Terms of Use.