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We do not have access to those plumbing diagrams here. You will need to get them from Keystone. They will ask you for the last 8 of your VIN number. In my shop we just take one side loose and pull it down some so we can see in there with a flashlight. Most of these break near the top or at the exit of the tank line and valve. ABS tanks are very brittle. This is a common problem and you are the 3rd customer today with this same issue. In my shop I always use an after market polypropylene tank so this won't happend again. Let me know if you need more here as all follow ups are included in our fee.
Just checking back in to see if you perhaps missed my earlier response a few days ago? Easy to do with the volumes of e-mail most of us get every day. Or sometimes these end up in the spam file. Please let me know if you need me to resend it or still need additional input on this issue. Thanks!