Does anyone sell this little spring?

The one in the latch? No, ebay and just get a whole latch.

The 'door handle push button return spring' is at truckandcarshop.com: http://www.chevelles.com/forums/showthread.php?t=138066&highlight=door+latch+spring I have their catalog and like its simple, old school layout.

The 'door latch return spring' is here: http://www.ecklerschevelle.com/product.asp?pf_id=607682&dept_id=1668

I've been having trouble with opening my '70 doors. Same problems as usually listed - door won't unlock inside or outside. Found out tonight the 'push button return spring' was missing (busted off), so I'll need to order one. Are these available at GM? Or as a Dorman "Help!" P#?

I have also replaced my door lock rod bellcrank bushings: http://www.chevelles.com/forums/showthread.php?t=229545 so it greatly reduces the slop which may contribute to the overall problem.

So once I get back to par with these pieces, next go in the Trim Parts door handles. The first attempt with these was not so good... but that's for another post. (Who the heck cuts their handle gaskets???)

Perfect and VERY timely information. I have a broken interior handle return spring.

Thanks for the info!! I wish I could help you with your problem.