Q We own a 2001 GMC Yukon XL with 221,000 miles on it. Last week, we took it to the dealer because the check-engine light had been on since shortly after the last oil change. They put it on their ...

Finding and fixing vacuum leaks in a vehicle can be one of the most frustrating and time-consuming parts of automotive ...

Gasoline fumes contain a variety of hydrocarbons that constantly evaporate from the engine and fuel tank into the atmosphere. If the fuel is in the atmosphere, it can cause pollution, even if the ...