The Long Memory of Modern Cars

Ron Ananian, The Car Doctor - June 6, 2026  This week on Ron Ananian, The Car Doctor, Ron shares the story of a 2021 Chevy Suburban that suddenly became a no-start vehicle four months after being repaired from an accident. What appeared to be a simple breakdown turned into a lesson in modern diagnostics, networked vehicle systems, and why today's cars can develop problems long after the original event that caused them. Ron explains how fault codes don't necessarily tell you what's broken, only where the computers became confused, and why understanding a vehicle's history is often the key to finding the real answer. The repair ultimately led to a failing transmission control module, programming challenges, and a reminder that successful diagnostics is as much detective work as it is automotive repair. Also this hour, Ron discusses whether it's worth repairing a high-mileage Toyota Highlander with a failed transmission, helps a Hyundai Tucson owner navigate the well-known engine failure warranty issues, and answers an email about what maintenance should be performed immediately after purchasing a used vehicle with unknown service history. Car Advice Done Right Grab your Car Doctor gear – T-shirts & more at CarDoctorShow.com Follow the wrench – Instagram @ronananian for shop life & behind-the-scenes Watch & learn – Auto repair tips & videos on our YouTube Channel Got a car question? Call the Car Doctor Hotline 24/7 – (855) 560-9900 Join the conversation LIVE – Saturdays 2–4 PM Eastern  See omnystudio.com/listener for privacy information.