GMC Sierra 2500 HD clunking and high-pitch sounds at 66-68 mph over bumps and turns on GMC Sierra 2500 HD

Some GMC Sierra 2500 HD owners report experiencing clunking and high-pitch sounds when driving at 66-68 mph over bumps and turns. These issues may stem from the front driver side tire hitting rough surfaces, resulting in a hard clunking noise around the driver's feet. Additionally, some owners notice steering wheel vibration and jumping, which could signal problems with the steering components or suspension system. The high-pitch sounds may also be linked to rattling noises from the front end when navigating uneven pavement. To address these concerns, it is essential to check the condition of CV axles and ensure that all bolts supporting cross frames and the engine crossmember are properly torqued. Owners who have made modifications, such as installing a leveling kit, should inspect these components for any loose or improperly installed parts that could contribute to the clunking noise. Prompt inspection and tightening of these components are recommended to resolve the source of these noises.