I am new to jeeps just bought a 99 cherokee. I put a 2" lift on it. the truck has been fine for a month. I got on the highway today and hit a seem in the road and it started shaking bad. I pulled over and checked all my wheel lugs and looked for missing wheel weight didn't see any missing. what could it be my friend and i are going to check things out later tonight.

Deathwobble.

Did you get your Jeep aligned after doing the suspension work? If not, you should have.

Check ALL fasteners in the suspension/steering components for wear, replace anything worn, retorque everything to specs. Put Jeep in the air with front tires off the ground, have somebody sweep the wheels back and forth, check all suspension/steering attachment points for abnormal movement. Pay special attention to the trac-bar and the TRE's.

Good luck, and report back.

trac bar and shimmy shock are trash what should i go with i don't like the stock stuff. and my plan for this spring is a 4" lift with a bunch of axle work.

You need something adjustable prefereable with a new frame mount. The TRE on the stock setups wear fast so look for a replacement with diffrent mount. Rusty's Offroad, T.R.E.K.s or TNTcustoms, Rubicon Express, Full Traction offer t-arms with new mounts and they cover you lift height and future plans too. If you opt to go without a new mount....Tera Flex makes a decent one.