DETROIT—General Motors uses seven joining methods—including spot welding, laser welding, self-piercing rivets and flow drill screws—to assemble the aluminum body of the new Cadillac CT6 sedan.

WENTZVILLE, MO—The hiring process is underway for 750 new workers at the General Motors assembly plant here.

BOWLING GREEN, KY—Chevrolet is bringing back its exclusive Engine Build Experience for Corvette Z06 customers, who will get the opportunity to assemble the car’s 650-hp supercharged LT4 engine by themselves.

DETROIT—General Motors is planning to invest $200 million at two of its plants in Michigan to prepare for its future vehicle program. The automaker will allocate $160 million to its Orion assembly plant for tooling and equipment and $40 million to its Pontiac Metal Center for new dies.

BOWLING GREEN, KY—The GM assembly plant here has met the EPA’s ENERGY STAR Challenge for Industry. The facility is one of 14 GM plants in the world to have met the energy-efficiency challenge and one of only two to have achieved the honor three times.

WARREN, MI—GM plans to invest $240 million at its Warren Transmission Plant to build electric drive units for the second-generation Chevrolet Volt.

OSHAWA, ON—Another 11 General Motors facilities worldwide, including the automaker’s assembly plant in Ingersoll, ON, have achieved landfill-free status. All totaled, GM runs 122 landfill-free manufacturing and non-manufacturing facilities around the world.

DELTA TOWNSHIP, MI—General Motors Co. plans to add nearly 210,000 square feet to its Lansing Delta Township assembly plant as part of a $37 million expansion project.

SPRING HILL, TN—GM is planning to invest $185 million to produce small gas engines at its assembly plant here. The new engine will be used in 27 models across five of brands by 2017.

LANSING, MI—General Motors Co. will build a $174 million stamping plant near its Lansing Grand River assembly complex, with plans to add 145 jobs.