went to the dealer yesterday and today! it cost me 408$ tax inlcuded to change the intermediate steering shaft! They already lubrificated it before and the problem was still there... tomorrow, I'll go back to the dealer with a good friend of mine.. cause it is NOT normal to change that after that poor mileage...
I had a lot of cars and changes some normal stuff after a while.... for example: stab bushing after 80 000 km, shocks after 200 000 kms etc.. but not a shaft after 70 000 km!!!!
I'll give you feedback ASAP after I meet a director of GM