KO,
Good Sam Extended Service Plan will pay for diagnosis time once a determination has been made that the problem is a covered repair. What the repair guy was probably referring to is that we can't authorize or pay for the diagnosis time until the diagnosis is completed and we know that the repair is covered. So we ask the RV owner to authorize the diagnosis or tear-down, and then pay for the time along with the repairs if it is covered repair. If it turns out to be a maintenace item or a part that is not covered, the RV owner is responsible for paying the diagnosis time.