General Motors Canada's unionized workers have ratified a new three-year labor deal. File Photo by UPI/Brian Kersey | License Photo

Aug. 30 (UPI) -- Members of the labor union representing 4,600 General Motors employees in Canada have ratified a new three-year deal that includes wage increases and 1.1 billion Canadian dollars (US$791 million) in investments in the country's auto industry.

Unifor said Sunday that 80.5% of members at GM's Oshawa, St. Catherines, and Woodstock plants in Ontario voted for the pact. Meanwhile, 96.5% of workers at GM's Woodstock, Ontario plant, who are covered by a separate contract, approved the deal.

As part of the agreement, GM is to spend C$144 million to add the next generation Heavy-Duty Sierra pickup truck to the Oshawa plant. It will direct C$215 million to assemble next-generation transmissions in St. Catherines, which is expected to start in late 2029, Unifor said.

The auto maker previously committed C$691 to support sixth generation V8 engine production in St. Catherines and $63 million into stamping and other upgrades in Oshawa.