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GM pauses 3.0-liter turbodiesel production due to a supplier shortage

General Motors confirmed it has temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine. It blamed the last-minute pause on a supplier-related shortage. Website TFL Truck first reported the news, and a representative from General Motors quickly confirmed it. The spokesperson explained the issue is due to a "temporary part shortage" and added that production will resume "as soon as possible," meaning the Duramax engine (which is called LM2 internally) is not going away permanently. Additional details are not available, so we don't know if the issue is related to the ongoing chip shortage. Rather than delay deliveries and create a backlog, General Motors is reportedly asking its dealers to encourage buyers who want a turbodiesel engine to instead select either the 5.3-liter V8 or the 6.2-liter V8, depending on the model selected. Both are gasoline-powered units. There's no word yet on when Duramax production will resume. The shortage affects several models, including Chevrolet's Tahoe, Suburban, and Silverado 1500 and GMC's variants of these trucks. Cadillac's Escalade is temporarily diesel-less as well. Heavy Duty variants of the Silverado and the Sierra are not affected because they're powered by a different Duramax engine with eight cylinders. Motorists seeking a full-size SUV powered by an efficient turbodiesel engine are temporarily out of options because the Tahoe/Yukon and the Suburban/Yukon XL had the segment to themselves. The Duramax was surprisingly popular, too: in May 2021, GM Authority reported that the turbodiesel straight-six represented 8% of Suburban sales and 6% of Tahoe sales. Installed in a rear-wheel-drive Tahoe, the engine returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make the body-on-frame behemoth more efficient than the unibody, front-wheel-drive Chevrolet Blazer that's 20 inches shorter and approximately 1,700 pounds lighter. Related video: 2021 Chevrolet Tahoe 3.0L Duramax engine

Cadillac ATS Coupe spy photos show more sedate two-door

Remember when the Cadillac CTS Coupe debuted, and we were all like, "Oh hello there?" Well, don't expect the same thing to happen when the new ATS Coupe is unveiled - these brand new (overexposed) spy shots show a two-door that's decidedly more sedate than the angular yet curvaceous and all-around good-looking CTS Coupe. This isn't to say that the smaller Caddy Coupe won't be attractive - the four-door version is plenty pretty, to be sure - it just likely won't have that extra somethin'-somethin' to truly set it apart from the sedan.
Fine, then. We don't doubt that the two-door ATS will be just as enjoyable to drive as its sedan sibling, with a lot of the mechanical stuff likely carrying over unchanged. That includes the powertrain options, meaning buyers will be able to choose from the naturally aspirated 2.5-liter inline-four, turbocharged 2.0-liter four, or larger free-breathing 3.6-liter V6.
Look for the 2014 ATS Coupe to enter production in January of next year, meaning a reveal later this year (LA Auto Show, perhaps?) would be in order.

2016 Cadillac CTS-V First Drive [w/video]

A million insects lost their lives today. Boxelder bugs and mayflies making the ultimate sacrifice in Elkhart Lake, their carapaces no buffer against a rocketing rectangle of safety glass. Their bodies gorily streaking into spangles along the diamond-faceted face of the Cadillac CTS-V. Road America is a four-mile ribbon of pavement snaking its way through the emerald center of the country's northern heartland. Since the 1950s it's seen uncountable fields of diverse racing machinery rocket over its hills and around its 14 corners. I would imagine that on those occasions the tramping of onlookers and hubbub of vehicles, both competitive and commonplace, would dissuade a great number of our six-legged friends from making their way onto the track. But today it's just me turning laps. Inconceivably just one journalist, driving the baddest roadgoing Cadillac ever made, on one of the loveliest circuits America has ever carved out. So big-winged bugs made it out to me in a vast array and a tragic sum, and I drilled through them oblivious to anything but one of the greatest days of driving I've ever had. Cadillac has turned its CTS-V from a performance sedan to a monster. For 2016 Cadillac has turned its CTS-V from a performance sedan to a monster worthy of the carnage described above. The words "epic" and "awesome" are hilariously overused on the Internet, but in the case of the CTS-V's 6.2-liter supercharged V8, their literal meanings are fitting. The capacity to produce 640 horsepower and 630 pound-feet of torque is astounding. Feeling those outputs come to growling life under my foot arch, uncorks different reactions in my brain as the day wears on: first trepidation, next cautious optimism, finally red-eyed bloodlust. A glance at the power and torque curves will show you that the charged V8 behaves more like a naturally aspirated thing than a turbo'd on/off switch. Peak torque arrives at 3,600 rpm, horsepower at 6,400, giving the engine lovely, linear power delivery. Even with top torque happening near the middle of the tach, there's no small amount of the stuff when the engine first spins up, so launching all 4,145 pounds of Detroit iron still feels exotic. Launching all 4,145 pounds of Detroit iron still feels exotic. On the roads around Wisconsin, using all of the available power is hardly advisable, but I have no trouble driving this fast car slowly (sort of).