This was addressed earlier in the thread. GM did file bankruptcy. In order to confirm their sale, they presented compelling evidence that an urgent emergence was crucial to the company's survival. The judge ultimately agreed that an auto-maker could not survive a 2+ year long reorg like some of the airlines successfully negotiated. More importantly, there were no lenders willing to finance this kind of reorganization - including the US Treasury. As for the UAW, it received some stock in the reorganized company, while making some concessions to its CBA, but keeping it largely intact. Secured debt was paid in full - which is most certainly much better than they would have done in a liquidation, which is why they all supported the sale. I don't understand how this means the UAW received better treatment than secured bondholders, as I so frequently hear. Certainly, GM could have pursued a drawn out Chapter 11 reorg. in which it was adverse to its own union and sought to throw out the CBA, but how would that company survive the bankruptcy process and who would invest in such a company? The professional administrative costs alone would have been astronomical. Who would want to own a Detroit automaker with no labor agreement? The answer is obvious - anything other than a quick sale, financed by the government with the union's backing, would have meant the death of GM.
I think one could argue that it would have been better to let the company die, so long as you admit that no electable president from either party would ever let that happen. What no one can reasonably argue is that this company could have been successfully reorganized without the union's buy-in.