I recently took a long trip, mostly highway driving, and noticed what I thought was high sensitivity to cross wind. Just visually judging the side wind was no more than 10 - 15 mph. I feel the car sway and I needed to make greater adjustment than other cars I've driven.

Any thoughts what could be causing this?

The car just tuned over 100K last week. New rear shocks, otherwise stock.

 

Worn rear shocks

 

Something is (badly) faulty. The cars when right just do not do that one bit.

Check suspension carefully, including tyres - sizes, pressures etc. Also wheel bearings.

 

Was it still on snow/slush?

Anyways, check your alignment. Toe, front and rear is especially important when considering cross-wind sensitivity. Particularly the effect that you get when you pass a big rig just past his front bumper.

 

Everything checks out tight. It was also recently aligned(2 months ago) and in spec. Tires are stock size(235/50-17) and inflated to 31 psi all around.

Is there a weak link in front suspension? Is there a good test method other than pry bar?

Front right wheel bearing was replaced before the long trip. FYI, timken bearing fits, GMB do not. Had to do it twice because the first one did not fit.

Btw, there is no more snow in Michigan. Not until the next Christmas at least.