[Warren Seale]

Originally Posted by TAKerry

The inner structure just sits in there I think. The outer cover hooks on the top of the steel, Its been awhile since I did mine but there may be a fastener in there as well. The plastic buttons go in the bottom kinda like a big push pin. Orange is most common but I think I have seen clear ones as well.

The orange pins were OE and disintigrated and broke apart in short order. The clear pins are the service replacements that hold up much better with time. This is with regard to the GM produced pins. Aftermarket pins (if they are available) may be a different story.