GM has said that it does not know when production of its Opel Combo delivery van will resume at its Azambuja plant in Portugal after a halt caused by the collapse of talks on severance terms for workers.

"Production is stalled. This was not foreseen," GM's spokesman in Portugal told Reuters. "We don't know when it will resume."

GM Europe works council boss Klaus Franz said on Tuesday, Sept. 5, that production of the Combo had stopped, the report said.

GM Europe decided in July that production will end in Azambuja at the end of the year.

The annual production volume of 75,000 Opel Corsa-based Combo light-commercial vans and passenger vehicles will be consolidated into GM's much bigger plant in Zaragoza, Spain, for cost reasons, the automaker said.