GMC Sonoma running rough while driving suddenly on GMC Sonoma

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some GMC Sonoma owners report experiencing rough running while driving suddenly due to several potential issues. Internal distributor faults can lead to engine roughness or stalling conditions, contributing to this problem. Additionally, dirty throttle bodies may result in rough idling, jumpy acceleration, and poor fuel economy, further exacerbating the rough running experience. Faulty spark plugs or worn-out ignition coils can disrupt the combustion process, leading to misfires and rough operation. Furthermore, concerns with the fuel system, such as a clogged fuel filter or malfunctioning fuel pump, can also cause similar symptoms. Lastly, an erratic reading from the throttle position sensor (TPS) can trigger rough running, making it essential to check this component with a scan tool for accurate diagnosis. Prompt attention to these issues is crucial for maintaining the smooth operation of the GMC Sonoma.

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