noise

[ipwanab]

Anyone having metallic noise from transmission area when idling/accelerating in drive throughs next to building?Sounds like a ball check valve operating at a higher than rpm speed. Truck is flawless in all respects except this. I have no one to compare with in my area. Dealer says it is normal. If this is the same engine as a lexus they would never sell one. only dissapointment in the truck is the too loud exhaust.