How many times have you been to the doctor or hospital for some ailment and the diagnosis was wrong? Getting to the root of most any problem within a complex situation is tough-even for professionals.

Gather as much information as possible about your car issue, including photos and videos capturing when a problem occurs. Not all information online is correct, and that goes for car repair advice.

Q:I've been searching the Internet to diagnose an issue I have with my 2003 Chevrolet Express van with the 6.0-liter engine. I was driving on the expressway, and suddenly the truck started to behave ...