HouseCallAuto 6/25/2010Description is understood but does not give me any direction. Try to determine at least whether the noise is from front or rear of vehicle, does turning the steering wheel affect the sound while moving, like a fast lane change? Is this truck 4WD?
neomyejohn 2/4/2013I think its the engine. Maybe the engine was manufactured by a company that makes motorcycle engines. Thus, giving a similar sound to a motorcycle when the speed exceeds a certain limit. But if its working right, i don't think this should worry you.