61.000 miles-just told my racking pinion is leaking, How does this happen?

Rack & pinion assemblies use rubber seals just like most other components and are often under high pressure (over 1,000 psi), so its not unusual for them to leak. On some models like the GMC Acadia, it common to see them leak as early as 20,000 miles! However, I would get a second opinion from another shop before I spend that kind of money on an "upsell" from one shop.

verify the system to determine some lost of oil