Purchased the truck 5 months ago in the summer and never used 4 wheel drive even to test it. Truck had 22k on it so we finally get some snow here in new york within the past couple of weeks and was very pleSed to use the 4x4 modes i have and auto and 4 hi lock and 4 low lock. The truck currently has rough country 2.5 inch leveling kit installed in it and was aligned and have had no issues in 2 wd or no vibrations or shudder. While in 4x4 modes automand high lock only from 0-40 does it have very hard vibration then goes away. The truck is having its alignment checked because i have read on some other forums this can be a cause is there anything else that shiuld be checked besides frozen cv's and if everything checks out where should i go from here?

Ps sorry if this is repost using iphone app and tryed searching for thread pertaining to thjs but had no luck