Ofcourse it's illegal to have a delete Who doesn't know that. The deal is I know plenty of people that are deleted and have had problems such as leaking rocker boxes, faulty wiring and other non power train related problems that would be warrentied but the. Dealer has flagged the truck and voided warrenty for a delete which didn't affect the problem for service . It's the dealerships discretion to accept or deny the vehical for service since the dealership is independently/privatly owned. I know dealers around Texas that do not discriminate against deletes as long as the problem isn't obviously from overfueling or abuse.