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GM Ultium tech can scavenge heat from everywhere, even you

GM likes to give us tidbits about its Ultium platform from time to time, and today it’s telling us about the platformÂ’s ability to capture waste heat from the propulsion system. In addition to capturing from the propulsion system, it can also capture humidity from both inside and outside the vehicle and even from passengersÂ’ body heat. Yes, you, your family and/or your friends are a usable heat source as far as GM EVs are concerned. It then deploys the heat in an advantageous way. If at this point, youÂ’re screaming, "Heat pump!" youÂ’d be right. WeÂ’re talking about an elaborate heat pump system that GM is using for its Ultium-based vehicles. Every Ultium-based GM vehicle gets this system that is covered by 11 patents and four publications. The waste heat it collects is used in a number of ways, but its primary use is to heat the cabin quickly and efficiently. GM claims it can heat the cabin of its Ultium-based vehicles quicker than vehicles with traditional internal combustion engines. Plus, when put to use, GM claims that using the heat pump provides its EVs with up to 10% more range than theyÂ’d have without. Beyond heating the cabin, the heat pump is capable of putting waste heat to use by preheating the battery prior to charging so that you can charge quicker. The system can even cool the propulsion system in preparation for Watts to Freedom (WTF) launch control starts. GM says this was vital in helping the Hummer EV achieve its bonkers 0-60 mph time of about 3 seconds. “Having a ground-up EV architecture gives us the freedom to build in standard features like UltiumÂ’s energy recovery capabilities,” said Doug Parks, GM executive VP of global product development, purchasing and supply chain. “This helps us squeeze more efficiency, performance and overall customer benefit out of our EVs.” GM says itÂ’s been developing heat pump technology since the EV1 and its heat pump. This is the modern evolution of that technology, and GM says itÂ’s going to be implemented in every Ultium-based vehicle as a standard feature. Related video: Green Cadillac Chevrolet GM GMC Technology Electric Future Vehicles

GM extending warranties on Cadillac CTS-V and Chevy Camaro ZL1 for supercharger issue

Okay General Motors, we've sat by and watched you recall the compact cars, crossovers and pickup trucks, and aside from reporting on it, we've been fairly quiet. This, though, this will not do. We can almost tolerate the recalls on the bread-and-butter cars, but leave the performance vehicles alone.
According to a report from The Car Connection, GM has discovered a problem with the superchargers of the 6.2-liter V8s found in the Chevrolet Camaro ZL1 and the Cadillac CTS-V. Apparently, the issue rests around the internal bearing shaft grease, which can become contaminated (we aren't sure with what). If left unchecked, it'll first lead to a rattle at idle, which goes away under slight throttle. The real warning stage is when a high-pitched squeal develops, signaling that the bearing shaft has failed. Naturally, severe engine damage is the next step (although it's possible that the engine will also just refuse to turnover, although neither case is desirable).
According to TCC, GM will replace the superchargers on vehicles that have exhibited symptoms of bearing shaft failure free of charge. It will also, allegedly, be extending the warranty on all supercharged ZL1s and CTS-Vs to 10 years or 120,000 miles (whichever comes first), from the date of purchase. Officially, only 2009 to 2013 CTS-Vs and 2012 to 2013 ZL1s are suffering from this issue.

2022 Cadillac CT5-V Blackwing First Drive Review | Peak oil

We may have embraced the coming of electrification. We may love a good, high-performance hybrid or EV. We could quite frankly not care less how a car makes power, so long as the end result is satisfactory. But man, nothing suits a big, square-shouldered American sedan quite like a V8. Question our commitment to Mother Gaia if you must, but the blat of a small block is the bass line in the song of American speed. And now onstage for the V8's farewell tour is the 2022 Cadillac CT5-V Blackwing, a midsize, manual-transmission luxury sedan that comes out swinging with a hand-built, supercharged 6.2-liter V8 making 668 horsepower and 659 pound-feet of torque. The CT4-V Blackwing may be great in its own right, but it's still down a pair of cylinders. The old Cadillac CTS-V (S not 5) was never the slimmest, sharpest or most luxurious sport sedan money could buy, but it always offered excellent performance for its price. It was also one of the few midsize manual transmission holdouts, at least until the third-generation V model debuted in 2016; for its brief run, it was offered only with the eight-speed automatic. Its spirit lives on in the CT5-V Blackwing, but Cadillac refined the formula significantly for its transition to the updated Alpha platform. The manual is back, it gained 28 horsepower and 29 pound-feet of torque, and the aerodynamics and braking were completely overhauled for this, the final iteration of the V8-powered Cadillac sport sedan. Apart from the larger footprint and all that comes with it, most of the Blackwing formula carries over almost unchanged to the CT5-V from its smaller CT4-V sibling. A six-speed manual gearbox is standard with a 10-speed auto available as an upgrade (which it truly is, in some ways). The electronically controlled mechanical limited slip differential, fourth-generation Magnetic Ride Control and various other tweaks made their way here too, but there are a few noteworthy deviations. Let’s start where the CT5-V stops: the brakes. Since the larger, heavier CT5 needs more braking capacity, its wheels grew an inch in diameter to accommodate a bigger set of stoppers. The wheels are wider too, the better to fit its Michelin Pilot Sport 4S tires in 275/35ZR19 (front) and 305/30ZR19 (rear) – 20 mm wider up front and 30 mm wider out back than the 18-inch tires on the smaller CT4-V Blackwing. Exclusive to the CT5 is a carbon-ceramic brake package that reduces unsprung mass by 53 pounds and rotating mass by 62 pounds.