Unifor president cites plant cutbacks and closures on both sides of the border following pledges to maintain operations.
33 manufacturing plants down in nine states across the US, plus 22 parts distribution warehouses.
St. Catharines propulsion plant lighting project is cutting electricity use.
Peer-to-peer platform allows GM customers to rent out their vehicles, offsetting some ownership costs.
Unifor leader calls on Trudeau to work with Trump to keep manufacturing jobs from shifting south.
Automaker is betting on electric vehicles, mobility services and autonomous cars and trucks.
Company says brand’s workers need to be closer to engineers and designers; Cadillac plans to launch a new vehicle every six months for the next three years.
Automaker has five car factories with plenty of unused capacity.
Total number of vehicles sold for the month: 186,447, down from 187,540 in March last year.
All waste from daily operations is recycled, reused or converted to energy.
Move comes amid a continuing slump in sales of passenger cars generally in North America.
Automaker says it needs better cost performance from its operations in South Korea, where sales have slowed.
First city outside of the US to offer app-driven service, now in 17 American cities since it was launched two years ago.
Automaker says it could save $1 billion and avoid recalling up to 6.8 million full-size 2007-2011 pickup trucks and SUVs.
Project aims to reduce electricity costs, greenhouse gas emissions by 77%.