i have a 2000 silverado with a loud clicking sound in the front when turning over light bumps it is 2wd and i have already put a new rack and pinion in, the ball joints and tie rod ends seem tight and are well lubed. I also removed the front shocks and sway bar links and drove it and it still does it. Has anyone had this problem and knows the fix?

 

My two 2001 gmc savanna 2500 cargo vans i have for the business have the same exact problem... still havent found out whats doing it either, i did everything you did and also did a complete chassis lube... i hope it doesnt have anything to do with the spindles, TTT for you.

 

sounds dumb but check your lug nuts

 

Mine does it too. Been to the dealer 3 times and it still does it a little.