The company’s statement Tuesday about the plants departs from its past stance that the joint venture, called Ultium LLC, would decide on a bargaining strategy.
General Motors is investing in two components plants to help boost its production of full-size pickups.
The automaker said Thursday it will invest $93 million at its Romulus Powertrain plant and $7 million at its Bedford Casting Operations in Bedford, Indiana.
The Romulus investment will add machining capability, while the Bedford investment will increase the plant’s die casting capabilities.
Both investments will help GM boost production of the 10-speed automatic transmissions used in the Chevrolet Silverado and GMC Sierra light-duty, full-size pickups.
GM builds its light-duty pickups at Fort Wayne Assembly in Indiana and Silao Assembly Plant in Mexico. The automaker assembles its heavy-duty pickups at Flint Assembly.