Can you open them from LR and the Bride is ACR installed and updated. have you use menu Help>Updates to keep all your Adobe products updated?
Yes, I can import them into LR and view them, but how do I get them into Photoshop CC? Lightroom does ask me to convert them to dng files. Will I lose information in this conversion process?
The Canon 6D has been supported since CS6/ACR 7.3 and LR 4.3 so any version of PS-CC/ACR8 and LR5 should be able to open the files:
Are you converting to DNGs. There is no need to, but even if you were, PS-CC/ACR8 should be able to open the files.
What version of the Camera Raw plug-in is installed for PS if any? Use: Help / About Plug-ins / Camera Raw in Windows.