My dipstick part number is E2DP-7A020-AA I'm pretty sure that's the right one for a C5. It's total legnth from tip to stopper is 22 inches. Its 2 inches from the tip to the first fill ine and the distance between fill lines is close to 3/4in.
I may have the incorrect filler tube though, trying to order a new set to verify the correct length.
After I let it set the last time I overfilled it, I siphoned out close to a quarts worth and it started engaging again. It did slip a little when I tried moving it in gear, but at least it's engaging. Dipstick still says I don't have enough fluid in though, so I'm sure something is wrong there.
Does anyone happen to know the lenght or part # for the filler tube I need so I can verify what I have is the wrong one? Thanks.