One problem related to loud engine noise has been reported for the 2001 Chevrolet Suburban. The most recently reported issues are listed below.
There was an engine knocking problem. The dealer and the manufacturer were contacted. The consumer was given a letter that certified that the manufacturer was aware of this problem, and the vehicle was okay to drive. The consumer disagreed, and felt the vehicle was not safe. There was a noise, rubbing sound when the brakes were applied. There were knocks during the initial start of the day, and the window was noisy while operating as the regulator cable was loose.