ISO/TS 16949 is the new "world automotive" quality standard. Currently, it is a technical specification but nearly all automotive manufactures will accept it. It is essentially QS-9000 from the big three mixed with a little, and I mean little, VDA 6.1 from the german automakers.
The asian automakers plan to indorse it in the near future.
As for the big three, they will accept QS or TS your choice. In my humble opinion QS will be dead instead of reprinting it to include the new revision to iso 9000:2000.
Go TS, it is the future for automotive