This forum seems to provide an answer: http://forums.xfinity.com/t5/Channels-and-Programming/what-happened-to-GRIT-TV-on-Comcast-March-2017...
Seems the local channel, WUTB may have dropped it. It is operated by Sinclair Broadcast Group, which was mentioned in one of the replies as replacing Grit with Charge!. I wish we still had it though, I really liked it.
If someone knows of a way to still access it I would appreciate any suggestions.
Hi Krisdish, you can submit a Customer Feedback Form. Your suggestions help us to reevaluate our channel lineups as well as our overall content delivery, allowing us to create the best customer experience possible.