General Motors has issued a service update for certain 2021 Chevy Silverado HD and 2021 GMC Sierra HD pickups that may have been delivered with a damaged diesel nitrogen oxide sensor. The problem: in ...

Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

We earn commissions from purchases you make using links in our articles. Learn more. If your car experiences poor fuel economy, lacks power, feels sluggish, idles rough, or has an illuminated check ...