clunk in steering column

I have a clunk in the steering column when i stop or hit a bump.. I talked to the dealer when it was still under warrenty, they said they greased the steering coulmn. It didn't happen for like 9 months and now it is back.. I can't see any place the grease it .. does anyone know??

I have a 99 Silverado and the dealer replaced the steering shaft on it twice. The shaft that was replaced is between the firewall and gear box.

Check with GM, just had a recall on my '04. Seems the steering shaft assembly that holds the grease has a bad tendancy to crack and loose all lubrication, causing grinding sound and popping. One recall does it all. $70 free fix from dealership, takes about an hour for the guys to fix. :banghead:

If your truck is out of warranty and you want to repair the clunk yourself you can get the intermediate shaft grease kit from the GMDieselTech.com (http://www.gmdieseltech.com/store2/cart.php?target=product&action=view&product_id=16238&category_id=268).

Go here for complete instructions and text of the Intermediate Steering Shaft Clunk TSB (http://dieselplace.com/forum/forum_posts.asp?TID=281&PN=1) (need to register with this site to view)

This is a common problem.. My 2500HD started clunking during slow speed turns at about 18Kmiles. Had the grease job and its been OK so far.

:)