Unionised GM workers in Oshawa have voted overwhelmingly in favour of using a strike as a bargaining tactic.

Members of CAW Local 222 voted 96.8% in favour of giving their bargaining committee a strike mandate.

"Members of our GM unit have sent a strong message to the company as a result of (Sunday's) strike vote meeting," said Local 222 president Chris Buckley in a news release.

"But it remains the CAW's position to bargain a fair settlement without a labour dispute."

The contract between General Motors and the Canadian Auto Workers expires Monday, September 17, 2012 at 11:59pm.