2011 Gmc Sierra 2500 H/d on 2040-cars

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GM cutting vehicle trim options to save money for electrification

Information continues to filter out about GM's plans based on comments the automaker made during its Capital Markets Day event in February. GM President Mark Reuss said the company's push to save money by rationalizing the number of build combinations will continue in 2020, carrying on the work done in 2019. As GM Authority covers, last year, the carmaker cut 3,500 components across model lines, a 12% drop in the number of parts it needed to stock in its plants. Reuss used the next-generation Chevolet Equinox and GMC Terrain as examples for more cost efficiencies, saying build possibilities — which include international markets and their options — will be cut by more than 50%, and use more shared parts. "We will reduce total trim levels on Equinox and Terrain from eight to six," Reuss said, "reduce engine variants from 11 to 5, reduce build combinations from more than 200 to less than 100 per program, and see significant cost savings of an already paid-for architecture that took the mass out, helping us self-fund electrification programs." GM will plow a large amount of the money it saves into its ambitious EV program. In 2017, the automaker said it intends to have 20 electric vehicles on the market by the end of 2023, some of which could be shared between brands. An automotive analyst at Seeking Alpha and a piece in Automobile attempted to put specifics to what we should expect. As Automobile points out, the first two EVs in the 20-car program are already on sale, being the Ariv Meld and Ariv Merge eBikes available in Belgium and The Netherlands. We've seen the Cruise Origin autonomous rideshare taxi, although we don't know when it will hit the road. The next three, which we should see in the metal shortly, are two Cadillac EVs and the GMC Hummer EV pickup. The Cadillac pair are expected to be sized like the XT4 and XT5, and along with the Hummer, should hit the market starting in late 2021.

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

GMC confirms Hummer EV will be joined by an electric Sierra, or Sierra-like, pickup

GMC will step into the electric vehicle arena for the first time when it begins building the Hummer EV in 2021. While it's not planning on becoming an electric-only brand, it has more battery-powered models in the pipeline. "There will be an all-electric Sierra pickup, but no timeline yet. But, the plan is to make it electric; this whole electric thing is a moving target," Lynn Thompson, the president of a Buick-GMC-Cadillac dealership in Missouri, told the Detroit Free Press. He said executives revealed those plans during a national dealer meeting. What remains to be seen is whether the truck will be an electric variant of the Sierra as Thompson said, or if it will arrive as a standalone electric truck with Sierra-like dimensions and capabilities. Sister company Chevrolet is also planning to launch an electric pickup in the coming years, and it strongly hinted it will take the second route. Its entry into the segment won't look like a Silverado, and nothing seriously suggests it will be badged as one. It will also be interesting to watch how GMC ensures that the truck doesn't overlap with the Hummer EV, which will exclusively be offered as a four-door pickup with a relatively short cargo box when it arrives in stores as a 2022 model. Our crystal ball tells us the Hummer will be marketed as a more expensive model aimed at weekend adventurers who want to make a statement, while the Sierra-like model will be cheaper and primarily aimed at buyers who merely want a truck, whether they're commuters, contractors, or fleet operators. Chevrolet's entry into the segment will slot beneath these two models. General Motors used this strategy nearly 20 years ago to keep the Hummer H2, the GMC Yukon, and the Chevrolet Tahoe in separate corners of the same room. GMC's electric truck could share powertrain and chassis components with the Hummer EV. It might also be built in the same Hamtramck, Michigan, factory that parent company General Motors is funneling $2.2 billion into. Regardless of the path it takes, GMC is not going all-electric. "[GMC boss] Duncan [Aldred] said we're certainly not going to abandon our internal combustion engine vehicles because that's our core business, and that was good to hear. It's to let people know they're not going down the same road as Cadillac," a dealer who asked to remain anonymous said. Cadillac might go EV-only by 2025, starting with a crossover named Lyriq, and many of its dealers have refused to spend $200,000 on upgrades.