On 2001 F-250 4x4, when outside temps are relatively low (near freezing or below), there's a noise when shift between 2nd & 3rd (std. trans). Kinda sounds like pieces of rotating metal scraping one another. Appears to be from below the gear shift hump.
Dealer is not having a lot of success figuring out (and has witnessed the noise).
Is a very low mileage vehicle.
Any thoughts?