Hardly, a normal bankruptcy would have put bondholders first in line to be paid; restructured union contracts, and reformed pension and health care costs, making employees contribute more. under Obama's rather specially designed bankruptcy, bondholders holders received 42 cents on the dollar in order to reward the Unions, there were no pension or health insurance cost reforms.
Wages aren't the problem. The problem is pensions; GM is having to pay for the worker who's building the car and the former worker who is no longer building cars, and the former worker before that former worker who's no longer building cars.
The non-union US based Japanese auto manufactures' employees have more traditional 401K plans and require employees to share more of their health insurance costs.
That's why they didn't go bust.