Due to deployments and TDYs, my 2008 Silverado has only 41K miles. Aside from oil changes and having the transmission fluid changed when my leaking rear main seal was replaced, I haven't hit any of the mileage thresholds for scheduled maintenance yet. So weighing the age against the mileage, any opinions on what scheduled maintenance should I bump up and accomplish now? Especially concerning fluids, I'm not having any issues but do transfer case/brake/power steering/radiator fluid, etc. have a life span, regardless of mileage? Thanks.