GMC Sonoma will not idle issue on GMC Sonoma

Some GMC Sonoma owners report experiencing rough idling issues, often attributed to common causes such as vacuum leaks and spark plug problems. These owners may notice symptoms like low idle speed, stalling when easing off the gas at slow speeds, or even stalling in reverse. In certain cases, the rough idle may only manifest when the engine is warm. To resolve these issues, some owners find success by replacing the fuel filter and air filter, as well as cleaning and inspecting the idle air control (IAC) valve and the EGR valve. Additionally, troubleshooting steps such as checking for a binding throttle plate, a weak return spring, and cleaning the throttle body are recommended.