My cable on my rear gray tank valve has frozen. I still haven't taken it in to the dealer to get it fixed because once they have it I know I'll lose the use of the camper for the season.
I cut an access flap in the under lining about where I though the valve was, got lucky and nailed it. Then I was able to manipulate the valve to open and close by hand. Not perfect but I can use the kitchen sink without worrying about it filling and not being able to empty.
After the next trip it will probably go for repairs.
Dwayne and Susan
Jiro and Phoebe-4 legged family members
Mike and Dana - Traveling buddies
2016 Ford F350 XLT 6.7 Powerstroke DRW 4X4
2016 Brookstone 395RL