It was never specified. He was mentally retarted.
What is Eating Gilbert Grape was filmed in Manor, Texas although they were saying in the film that is was Iowa. This movie starred Johnny Depp.
Arnie is Leonardo DiCaprio and Gilbert was johnny Depp and Becky was juliette Lewis
A town Called Endora (not sure if its real) in Southern USA
whats eating gilber grape?lets try his mum maybe