Hello All,

Finally traded my 06 E53 3.0 to a 09 CPO 4.8i really does make a huge difference in power.

Quick question seem like when I drive the truck at low speeds I hear a whinning sound. Something you hear from toy cars like power wheels. I can hear it at the same time as the engine. Wondering if anyone care across this. Still have original warranty and wanted to know how do I go about this to a dealer? First time I will ever bring it to a dealer if anything so any info would be great.

Thanks