Answer:
The change in operating income for GM is that the operating income will increase by the amount of other pension costs less expected returns.
However, this change will not affect the net income, as all the items will still be accounted for, accordingly.
Step-by-step explanation:
GM's pension service cost is the present value of the amount that the GM is required by law to set aside annually to meet its employees' pension-benefits obligations. The reason for the separation is that the service cost is a compensation cost, whereas other pension costs are financial costs and not compensation costs. By this separation, the operating income of GM will increase.