2010 Ford F150 Squelch

my 2010 f150…5.4 4x4 makes a noise at city speeds…sounds like from front end…squeak/squelch/grind type noise. Not real loud, but slowly getting worse…mechanics had it up on hoist…found nothing…said to drive it till something happened…dont want to do that. . Any ideas ? Also with this truck, when in cruise control mode at higway speed, if I give it gas without disabling cruise, pauses, then slams into a gear so hard, feels like I got rear ended…all this in 2 wheel drive mode