We appreciate your feedback and are happy to hear that you trust us with your family's vehicles! It's great to know that our team was able to pinpoint the squeak on your 2009 Corolla and that you value the honesty and efficiency we strive for. Regarding the diagnostic fee, we understand that no one enjoys extra charges; think of it as a small investment in peace of mind. It allows us to give you a thorough check-up before we dive in for repairs. We're glad our honest approach keeps you coming back, and we'll continue to work hard to make sure your experience is a positive one!