If you google "zucchini bread from cake mixes", you'll find lots of references. I found one for you which may fit the bill for you. It's from Recipe Gold Mine and you can find it and others at
http://www.recipegoldmine.com/cakemi...ini-bread.html
Here's the recipe for Zucchini Bread:
1 (18.25 ounce) box spice cake mix
3 eggs, beaten
2 cups grated zucchini (don't drain)
Mix all ingredients to moisten, then beat 3-4 minutes to blend well. If it seems a little dry, add 1/2 cup applesauce. Divide evenly in 2 greased loaf pans. Bake at 350 degrees F for 55-60 minutes until it tests done with a wooden pick.
NOTE: If you can't find spice cake mix, use yello cake mix and add 2 1/2 teaspoons apple pie spice mix.
Hope this works for you. Good luck!