Went to change the heater core in my 88 K5 (with AC, and a 5.7) when I noticed the stupid plastic part was broken. Its the mount to the door. Not sure what GM would call it to even try to find it online. Here is a close up and one further away. Its the door in the front and its upside down in the Picture.
Anyone know what this plastic POJ is called?

 

Keeping this on the top Bump.

 

*Moving to Fullsize Tech* 1st Gen Tech is for S-series vehicles, not the fullsize trucks. Also, please familiarize yourself with the rules of the forum, specifically rule #4.
I'm going to go out on a limb and say that your best bet is likely the dealership (GM part # 3018715) if you can't find it at the junkyard and don't want to try gluing it back together.



*EDIT* I was able to find a replacement -- Cheyenne Parts.com


I also found a decent DIY solution that would provide long lasting service life (attached image). For best HVAC performance, you'd want to seal up the opening as best as you can.

 

Wow, thanks a million for all the help. I was sure GM had me by the nads on this one. The last small plastic part my wifes car needed was $100. So glad this one is so cheap. Also sorry for the early bump. Will take note of the rule in the future. Would probably have helped if I had posted in the correct section lol.

Went to the link and they wanted $2.99 for one and $15 to ship. Ended up calling the dealer and had to get 5 but was only $12 total. For once I got a cheaper price at the dealer. If anyone needs any I have four available for $18 shipped . *Joking.