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Do you literally mean you did no prep? Wash it with soap and water at least? No sanding?
No sanding? You might want to keep your truck out of the car wash or it'll blow your paint off in chunks. Maaco is known for their poor prep, but they probably sand all over at least somewhat. We used to get cars in the body shop all the time with sheets of paint missing from their Maaco paint job. They would always say the same thing: "it looked fine until I went through the car wash, now I need it repainted!"