Chevrolet Avalanche 1500 clunking noise from under pedals increases with speed and decreases with brakes on Chevrolet Avalanche 1500

Some Chevrolet Avalanche 1500 owners report experiencing a clunking noise from under the pedals that increases with speed and decreases when applying the brakes. This noise may be related to failing components such as the U-joint or CV joint, or it could be caused by low transmission fluid levels. Additionally, weak motor and transmission mounts have been identified as potential contributors to this issue. The prominence of the noise at higher speeds, along with its reduction when braking, may indicate problems with the driveshaft, motor mounts, or shift solenoids. It is crucial for owners to address these potential causes promptly to prevent further damage and ensure safe driving conditions. Consulting a professional mechanic for inspection and diagnosis is advisable if these symptoms persist.