"A limited number of Apple USB-C charge cables that were included with MacBook computers through June 2015 may fail due to a design issue. As a result, your MacBook may not charge or only charge intermittently when it's connected to a power adapter with an affected cable.
Apple will provide a new, redesigned USB-C charge cable, free of charge, to all eligible customers. This program also covers Apple USB-C charge cables that were sold as a standalone accessory.
For MacBook owners who provided a valid mailing address during the product registration process or Apple Online Store purchase, Apple will send you a new cable by the end of February 2016.
All other eligible MacBook owners should use the replacement process (on program page) to receive a new USB-C charge cable."
See the Apple program page for info/pictures on how to identify affected cables and details on replacement process.
(Still not seen Apple post the Late 2013 Mac Pro graphics card repair program page yet.)