Buick LaCrosse bucking with low RPM readings, not yet repaired on Buick LaCrosse

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

Problem overview

Some Buick LaCrosse owners report experiencing bucking or lurching issues at low RPM readings, which can be attributed to several common problems. These include engine misfires that lead to shaking and power loss, causing fluctuations in RPM. Additionally, cooling system leaks are frequently reported, which can result in overheating if not addressed promptly. Some owners also note timing chain issues, where stretched or worn chains affect engine timing and performance, potentially requiring replacement. To effectively resolve these low RPM bucking behaviors, it is advisable for owners to seek a thorough inspection to diagnose the specific cause of the problem.

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