Has anyone had an issue with the power steering making noise? Its only at low speed or sitting still when turning the steering wheel. I dropped the truck off at the dealer, they did a fluid flush and it didn't fix it. They said its most likely a check valve inside and the ENTIRE steering rack has to be replaced for $2000+...anyone run across this issue and toyota's solution? I thought I paid for the extended warranty when I bought the truck, but that's another issue I have to figure out.