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GM alerting truck and sedan owners to a do-over on brake recall

A recall campaign intended to address issues with braking systems on certain 2019 General Motors trucks and sedans may have introduced a new issue, the automaker has acknowledged, and thousands of owners driving repaired vehicles may need to return to their service departments for another update.  The update addresses a fix that was pushed out to owners of more than half a million brand-new GM trucks and sedans that could potentially lose partial braking function, according to the Detroit Free Press. The original software fix helped address situations where the vehicles' anti-lock braking systems would become disabled, which in turn would prevent electronic stability control from activating. Vehicles subject to the recall would often experience software glitches that prevented them from properly communicating the operational state of these systems, meaning drivers would have no idea that their brakes may not behave as expected in an emergency. The 2019 Chevrolet Silverado 1500, Cadillac CT6, and GMC Sierra 1500 were all recalled in the original campaign.  Unfortunately, the early version of this fix appears to have introduced yet another software glitch, indicating that the original fix did not do the trick. Those who have not yet had their cars serviced can rest easy; they will only receive the most up-to-date version of the software fix.  Related video    

Reservations for Cadillac CT4-V and CT5-V Blackwing models to open in February

Cadillac will unveil its high-performance CT4-V Blackwing and CT5-V Blackwing sedans on Feb. 1 and will accept reservations for the cars the same day. Only 250 examples of each car will be built for 2022, and immediately after the reveal, customers can secure one of these Caddies with a $1,000 deposit, which is refundable. Deliveries are set to begin in mid-summer. As a special enticement, those first 250 cars will get a numbered plaque on the steering wheel, which indicates the model, transmission, and build sequence. Note that the plaque comes only on cars equipped with the high-performance steering wheel, which based on the teaser image below appears to have carbon fiber accents. It's standard on the CT5-V Blackwing and included on mid-level and higher versions of the CT4-V Blackwing. We already know that the CT5-V Blackwing will be available with carbon fiber seatbacks. More exciting news is that Cadillac will buck the prevailing trend and offer a six-speed manual transmission as standard equipment in both cars. A 10-speed automatic also will be available. It's not yet known what engine will power the sedans, although it's not expected to be the eponymous 550-hp Blackwing V8 that had an abbreviated run in the just-discontinued CT6-V. Cadillac has also announced that Blackwing buyers can avail themselves of a 2-day high-performance driving school experience at Cadillac's V-Series Academy at the Spring Mountain Motor Resort in Pahrump, Nevada. They're on their own as far as getting there, however. The unveiling of the two new Blackwings on Feb. 1 will take place at the brand's main website as well as its Twitter page. Related Video:    

Cadillac ATS-V and Mercedes-AMG C63 S pitted Head to Head

Our favorite (and only) Autoblog-alum-turned-Motor Trend staffer is back with another Head to Head video, this time pitting the Cadillac ATS-V with the Mercedes-AMG C63 S. This performance machine shootout is ostensibly a way to figure out which of these new super sedans will earn the right to go toe-to-toe with the undisputed champion of its segment, the BMW M3. In reality, it's just a really good excuse to put three of the hottest sedans on the market on video at the same time... and there's certainly nothing wrong with that. Jonny Lieberman spends time in each of the two new challengers on the road, picking apart their powertrains, chassis and driving dynamics on the kinds of twisty roads drivers of these cars will relish. Then, he hands the keys off to Randy Pobst, who sort of acts as an unmasked version of a certain tame racing driver, except that he talks and has a personality. 0-60 and quarter-mile times are equated, braking performance is measured and scores are tallied before the two sport sedans end up at Willow Springs raceway. Interestingly enough, the car that proves (just slightly) faster at the race track isn't the car that wins the comparison. Curious? We're not going to spoil it for you. Check out the video, above. Then, for more action of these two machines, check out the videos just below. Related Video: News Source: Motor Trend Channel via YouTube BMW Cadillac Mercedes-Benz Luxury Performance Videos Sedan motor trend cadillac ats-v mercedes-amg c63