2007 Chevrolet Silverado 2500 Lt W/2lt on 2040-cars

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Cadillac CT6 production ceases January 2020 as part of D-Ham layoffs

General Motors filed paperwork under the Worker Adjustment and Retraining Notification Act with Michigan's Department of Labor and Economic Opportunity this week, detailing events to come at the automaker's Detroit-Hamtramck Assembly Plant. Starting February 28, 814 salaried and hourly workers at D-Ham, as its called, will be laid off. The 753 workers represented by the UAW will begin receiving offers in January to relocate to facilities in Michigan and Ohio, or buyout offers. As the 4-million-square-foot plant winds down through April 3 to a skeleton crew, the Cadillac CT6 ceases production in January 2020, and the last Chevrolet Impala comes off the line on February 28. The loss of the CT6 represents the end of Cadillac's latest brief, and highly regarded, adventure into flagship sedans. It might also mean the end of the 4.2-liter Blackwing twin-turbo V8 engine, at least for the moment. Both casualties are calamities. The death of the Impala closes the door on a nameplate in production for 52 years since 1957, having started off as a top-tier trim for the 1958 Bel Air known as the Bel Air Impala, once advertised with the line, "Lets you know you're the boss." As part of the new four-year labor agreement with the UAW, GM is keeping D-Ham open to build a new line of battery-electric vehicles, ultimately investing $3 billion and tripling employment to 2,225 workers when fully operational. The agreement described the coming EV as a "van" that would commence production in late 2021, but various reports say what's actually coming is a range of premium EVs in pickup and SUV bodystyles under the program codename BT1. The easy predictions put an electric GMC Sierra and Cadillac Escalade among the EV fold, but not until 2023, according to auto industry forecaster LMC Automotive. Before that, LMC claims an electric van will debut in late 2021, along with a battery-powered rebirth of the Hummer brand in pickup and SUV forms, also in late 2021. 

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

GM announces $7 billion Michigan factory investment, most going to EVs

GM announced a $7 billion investment in Michigan manufacturing, much of which is earmarked for EV production. Four sites are included, but the key elements are a new battery cell plant in Lansing and the conversion of GM's existing Orion Township facility to expand production of the forthcoming Chevrolet Silverado EV and its GMC Sierra sibling.  GM says it is the largest investment announcement in company history and that it will create 4,000 new jobs. It also says 1,000 jobs will be retained. "We are building on the positive consumer response and reservations for our recent EV launches and debuts, including the GMC Hummer EV, Cadillac Lyriq, Chevrolet Equinox EV and Chevrolet Silverado EV," said GM CEO Mary Barra.  GM says the Orion expansion and new battery plant will support an increase in full-size electric truck production capacity to 600,000 units. This is in addition to the Factory ZERO facility in Detroit that will also be constructing the electric Silverado and Sierra.  The Orion Township factory current builds the Chevrolet Bolt EV and EUV, and will continue to do so during the plant's conversion. GM did not indicate what will happen with the Bolts once that conversion is complete or whether all will continue to be built at Orion. They do not use the Ultium vehicle architecture. GM will build other EV models at three other factories that are under construction or being converted. They are located in Spring Hill, Tennessee, Ingersoll, Ontario, and Ramos Arizpe, Mexico. GM says that it will have the ability to produce 1 million electric vehicles by 2025. The Ultium Cells Lansing facility is a $2.6 billion joint investment by GM and LG Energy Solution. GM says it alone will create 1,700 jobs once fully operational by late 2024. It will join two other GM Ultium Cells battery factories currently under construction in the United States, one in Ohio and the other in Tennessee.  Not all of the $7 billion investment will be for EVs. It also announced $510 million of the total will go toward upgrading the Lansing Delta Township Assembly to produce the next-generation Chevrolet Traverse and Buick Enclave. Money will also go to upgrading Lansing Grand River Assembly.