Instructor John Forro gives an in-depth explanation of using thermal imaging techniques for diagnostics, including parasitic battery drains, overheating issues, wheel bearing issues and more. Also discussed are NVH tools and the pros and cons of each tool, along with real-world examples of NVH diagnostics. If you don’t know, Noise, Vibration, and Harshness (NVH), is the study and modification of the noise and vibration characteristics of vehicles, specifically cars and trucks.