Shop Buick Lucerne Mechanical Tension. Find Buick Lucerne Tensioner Pulley Price & Buick Lucerne Tensioner Assembly Replacement Cost. Maintaining the Tensioner Assembly in your Buick Lucerne is crucial for belt longevity and engine performance. Regularly inspect for wear and tension issues, as squeaking noises or a misaligned belt can signal the need for replacement. Extend its lifespan by ensuring correct installation and avoiding excessive engine strain. When selecting a new assembly, consider options like hydraulic or mechanical types, each offering different tensioning characteristics and durability. For optimal function, choose a high-quality material and follow the manufacturer's guidelines to ensure a secure fit, keeping your Lucerne running smoothly and efficiently.