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GM investing $2 billion in Tennessee plant to build Cadillac Lyriq, other EVs

DETROIT — General Motors said on Tuesday it will invest $2 billion to convert its Spring Hill, Tennessee, factory to produce electric vehicles, starting with the new Cadillac Lyriq, alongside existing combustion-engine Cadillacs. Spring Hill will be GM's third U.S. electric vehicle factory, along with existing plants in Detroit and Orion Township, Michigan. The Tennessee plant was built in 1990 as the exclusive source for GM's now-defunct Saturn brand. The Cadillac Lyriq crossover is slated to go into production in Spring Hill in late 2022, according to AutoForecast Solutions (AFS), which tracks industry production plans. AFS said it expects some electric vehicle production will be announced at a later date for a factory in Mexico. Among additional investments, GM on Tuesday said it will spend $32 million at its truck plant in Flint, Michigan, to increase production of the Chevrolet Silverado and GMC Sierra heavy-duty pickups. GM will spend $100 million to shift production of the redesigned GMC Acadia crossover from Spring Hill to a plant near Lansing, Michigan. Spring Hill will continue to build the gas-engine Cadillac XT5 and XT6 crossovers. The plant also will build other future electric vehicles in addition to the Lyriq. The automaker's plans for investing in U.S. factories comes with two weeks left in the U.S. presidential election campaign. President Donald Trump and Democratic rival Joe Biden are competing for support from auto workers in Midwestern swing states. GM Chief Executive Mary Barra has outlined plans to invest $20 billion by 2025 in new electric vehicles and battery technology. The automaker is spending $2.2 billion to overhaul and retool its Detroit-Hamtramck factory to build a GMC Hummer EV electric pickup truck in late 2021, followed by an automated robotaxi and other electric vehicles. GM builds its electric Chevrolet Bolt at a large assembly plant north of Detroit.

GM will likely build PHEV batteries in China soon

It's a big week for batteries. Friday, Tesla will hold a big event at its Gigafactory in Reno, NV. But even in Michigan, there are things happening on the electrified automotive front. This was proven when GM invited journalists to its Brownstown Battery Assembly Plant today, highlighting the six different battery packs it makes for nine vehicles around the world (plus a tenth, coming to Asia, that has not yet been announced). During our tour, we learned a few interesting tidbits that we thought readers would like to hear: The Cadillac CT6 plug-in hybrid launches in China this fall before coming to the US next year. GM builds the battery packs in Michigan and ships them to China for final assembly in the PHEV. For now, this is all fine for GM to qualify for China's incentives for building green cars in the country. But, as Bill Wallace, GM's director of global battery systems, told AutoblogGreen, this could change thanks to the country's 'Made in China 2025' plan. The situation is "evolving," he said, and it's a safe assumption that GM will need to build packs in China some day. For the CT6 PHEVs that will be sold in the US, the batteries will make a round trip, since GM will only build the plug-in version in China. As for the range of the CT6 PHEV, that hasn't been announced, but since China offers incentives for vehicles that get at least 50 kilometers (31 miles), that's a likely target (the US range (UPDATE: GM did announce an expected range for the CT6 PHEV in the US at the LA Auto Show last fall, saying it would "travel approximately 30 miles on a full electric charge"). The battery pack in the CT6 is also a clunky box-type thing, totally unlike the near-elegant T-shape used in the Volt. This despite the fact that the guts of the two packs are similar. Both have 192 li-ion cells and weigh almost the same, but GM tuned the CT6 pack for acceleration instead of range, the way it did with the Volt's pack. Still, the main reason the packs are different is because the CT6 is a rear-wheel drive vehicle, and the tunnel that the Volt's pack uses is occupied by the driveshaft. Despite the highly touted second-gen Chevy Volt going on sale last year, GM still has the capacity to build battery packs for the old, first-gen model. This is because the company is legally required to be able to provide replacement packs for warrantied vehicles (for up to 10 years), and the second-gen packs don't fit into the first-gen vehicles.

Why an independent rear suspension for GM's new, full-sized SUVs wasn't easy

A Motor Trend report last month laid out how Cadillac's 4.2-lier twin-turbo Blackwing V8 could be an orphan due to cost concerns in the GM empire. Last-minute chassis changes to Cadillac's new sedans and XT6 crossover led to engine bays that couldn't fit the Blackwing. On the SUV side, according to the report, the new independent rear suspension for big people haulers cost so much to implement that GM ruled out reworking the Escalade to accept the Blackwing. At least one commenter rightly asked how could a suspension swallow that much money. A new piece in Motor Trend has the answer. The excellent Alissa Priddle spoke to Tim Herrick, GM's executive chief engineer for full-size trucks, about why the clean-sheet IRS cost "multimillions of dollars."  First, GM would need to build a new body shop at the Arlington, Texas plant that assembles the automaker's big SUVs to stamp the numerous wholly new parts and panels accommodating an IRS. Then GM would need to design and pay for a new assembly process. On top of those up-front costs, there was the incremental cost of the four-link IRS components being more expensive than those in the trucks' former leaf-sprung solid axles. Herrick endured so many rejections for so long that he remembers the date and time when he got approval for the new unit. He said it came down to a meeting where he told a higher-up, "I'll make you a deal: If we get to the reveal, or if we launch this and you think this was a dumb idea, I'll hand you my badge and let you walk me out." Head to Motor Trend to read the full story. Based on Herrick being on stage to help present the new SUVs to the press, and on our First Ride in the new Chevrolet Tahoe and Suburban at GM's Milford Proving Grounds, it appears this will have a happy ending for all involved. Furthermore, since Herrick worked on the T1 platform that supports the big SUVs as well as the light- and heavy-duty pickups, he understood the demands on the commercial side, too. That could be why when Roadshow asked Tim Asoklis, chief engineer of the Tahoe and Suburban, if the new IRS could endure life in the Chevrolet Silverado and GMC Sierra, Asoklis answered, "Oh, absolutely." Related Video: