A Cadillac service advisor took to social media to candidly list the top three things car owners should never do before bringing their vehicles in for repairs. The most frustrating for him? Showing up with an almost empty fuel tank. He emphasized that road tests are essential both before and after repairs—to reproduce the issue and verify the fix—but dangerously low fuel levels make this process difficult and hazardous. He also reminded customers not to expect free professional diagnostics over the phone, as service advisors’ expertise is worth paying for. Additionally, he noted that if customers choose to leave their cars at the shop and use a loaner vehicle, their repair will be given lower priority, requiring extra patience. The video resonated with fellow technicians and prompted some viewers online to reflect on the importance of respecting proper repair procedures.