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GMC boss wants a Jeep Wrangler rival

Challengers come and challengers go, but the Jeep Wrangler continues to push forward even after vehicles like the Toyota FJ Cruiser and the entire Hummer brand have been shut down. Now GMC reportedly wants to take a stab at the quintessential Jeep, as well.
The news comes directly from Buick-GMC vice president Duncan Aldred, speaking with our compatriots over at Edmunds. Although Aldred said there are no plans currently on the table to expand GMC's lineup beyond the current range, "there is plenty of room everywhere in the hierarchy."
That could include a rival to the Wrangler, as well as a flagship luxury SUV positioned above the current Yukon Denali (pictured above). Just when (or for that matter, if) such models might come into fruition remains a big question mark, but it's certainly interesting to see what GM's dedicated truck brand has on the drawing board.

2024 GMC Sierra EV Denali Edition 1 reservations closed

Reservation slots for the 2024 GMC Sierra EV Denali Edition 1 are gone. As is the case with just about every vehicle that can be reserved, regardless of cost, there weren't enough slots to satisfy the initial rush. Carscoops noticed the situation first, getting confirmation from GMC that the only avenue remaining for now is to get on a waitlist. GMC's page for the Sierra EV affirms the same, declaring "Reservations are currently full" for the Denali Edition 1. Doing so meant putting down a $100 refundable deposit, a nominal sum that anyone could back out of, but we know by now that market conditions mean between reservation holders and the waitlist there are plenty who will conclude the transaction. Duncan Aldred, head of GMC and Buick, said so himself, telling Automotive News, "It's pretty amazing. A few years ago, when we were planning Hummer, the amount of vehicles sold over $100,000 in the entire industry was not that many. Now, that has radically changed in the last three years. There's been a rapid increase in vehicle prices and there's been an even quicker rise at the top end. We expect to sell out really quite quickly." The Sierra EV Denali Edition 1 comes loaded with quilted seats, real wood trim, Super Cruise, and two motors making a combined 754 horsepower and 785 pound-feet of torque, and starts at $108,695. We don't have a number to put to the phrase "sell out," though. As GM did with the Cadillac Lyriq and Chevrolet Silverado EV, reps wouldn't divulge production caps. Aldred did admit that the reservation number is below 10,000. Two more Sierra EV trims are coming, but they're not due until 2025. That starts with the base Elevation trim bringing an MSRP around $50,000. Note, that MSRP is the prediction now. Three years is a long way away. When reservations open to the public for the standard Sierra EV Denali expected in 2024 and the following trims, GMC plans to keep a tight lid on the pot. Remember, with the Hummer EV, GMC took so many reservations that current production rates mean the automaker won't clear the list for years. Production rates will climb, certainly. However, GM builds the pickups and its Cruise Origin delivery vehicle at its Factory Zero, and there are already 110,000 Silverado EV reservations alone to get through.

'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).