Canadian workers at GM's CAMI Assembly Plant in Ingersoll, Ontario could go on strike Sunday night.

A deadline of 10:59 p.m. Sunday has been set for the plant's 2,750 workers that build the Chevrolet Equinox crossover to agree to a ratify the new agreement.

According to Automotive News, Unifor Local 88 has called a meeting for Sunday morning, which will allow members to vote on the contract, should a tentative agreement be reached. If no deal is reached or the workers reject the terms, Unifor will be legally allowed to strike at 10:59 pm on Sunday.

According to the union, the parties had yet to begin discussing key issues like wages, benefits, and plant improvements.

Should Unifor decide to strike it would bring production of the Chevrolet Equinox, GM's third most sold vehicle in the US, to a grinding halt. A long-term strike would be a disastrous proposition considering US dealer inventory of the Equinox sits at a scant 53-day supply, well below Chevrolet's 82-day inventory average.

Not all Equinox production comes out of CAMI, with the crossover also put together at GM's Mexican facilities in Ramos Arizpe and San Luis Potosi, however, combined Mexican production falls well short of CAMI's output.