So, how similar are the hub designs and actuation systems between a current F150 4x4 and the current Expedition? We have an 04 Expy that when you switch to 4 High doesn't make a sound, but my 07 F150 makes a mellow little clunking noise (dealer confirmed that what I hear is normal), friends trucks do the same, so for once, I think I'm not being lied to.

But why is the Expy different?

Thanks