Chevrolet Corvette fluttering noise under hood in V4 mode after belt tensioner replacement on Chevrolet Corvette

Some Chevrolet Corvette owners report experiencing a fluttering noise under the hood, particularly in V4 mode, following a belt tensioner replacement. This noise may be linked to issues with the LT4 Supercharger belt or the LT1 accessory drive belt tensioner, as some have found resolution by replacing the belt. Additionally, owners should be aware of potential rattling or clicking noises that could indicate torque tube problems, which may become more pronounced after the tensioner is replaced. Loud squeaking sounds might also stem from the idler pulley or belt tensioner pulley, especially when the engine is cold. Some drivers notice intermittent faint noises before transitioning from V4 to V8 mode, potentially influenced by specific driving conditions. To diagnose the source of the noise, it is advisable to temporarily remove the belt and listen to each belt-driven accessory with an automotive stethoscope. If the fluttering noise continues, a thorough inspection by a qualified mechanic is recommended to accurately identify and resolve the issue.