Chevrolet Silverado 2500 HD rough idle issue persists despite replacing throttle position sensor, plugs, and air filter on Chevrolet Silverado 2500 HD

Some Chevrolet Silverado 2500 HD owners report experiencing persistent rough idle issues even after replacing the throttle position sensor, spark plugs, and air filter. These owners often find that a faulty ignition coil can contribute to the rough idling problem. Additionally, vacuum leaks in the system may also be a cause that needs to be checked. Dirty or clogged fuel injectors are another potential issue that can negatively impact engine performance and lead to rough idling, prompting some owners to consider cleaning or inspecting them. Issues with the intake manifold, such as leaks, may further affect engine performance. Furthermore, a malfunctioning oxygen sensor can disrupt the air-fuel mixture, exacerbating the rough idle. Lastly, a dirty or faulty throttle body may also play a role, leading to the need for cleaning or replacement. It is advisable for owners facing these issues to consult with a mechanic or conduct a more thorough diagnostic assessment to effectively identify and resolve the underlying problems.