Buick Verano sputtering when stopped in gear with continuous check engine light on Buick Verano

Some Buick Verano owners report experiencing sputtering when stopped in gear, accompanied by a continuous check engine light. This issue may be attributed to engine misfiring, which can cause the vehicle to shake and is often linked to worn spark plugs or faulty coil packs, resulting in error codes like P0300 or P030X. Additionally, some owners identify other potential causes for sputtering, including a clogged fuel filter, a faulty fuel pump, bad spark plugs, or a malfunctioning oxygen sensor. It is crucial for owners to diagnose these issues promptly to prevent further damage and avoid costly repairs.