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GM recalls 3.8 million vehicles in North America due to braking issue

WASHINGTON — General Motors Co said Wednesday it was recalling 3.46 million U.S. pickup trucks and SUVs to address a vacuum pump issue that could make braking more difficult and that has been linked to 113 accidents and 13 injuries. The recall covers 2014-2018 model year vehicles, including some Cadillac Escalade, Chevrolet Silverado, Chevrolet Tahoe, GMC Sierra, Chevrolet Suburban and GMC Yukon vehicles. In late June, GM recalled 310,000 vehicles in Canada for the same issue. GM did not immediately explain why the Canadian recall occurred more than two months before it called back the vehicles in the United States. The recall was triggered because the amount of vacuum created by the vacuum pump may decrease over time, GM told the National Highway Traffic Safety Administration (NHTSA) in documents posted on Wednesday. The NHTSA opened a preliminary investigation into the issue last November, and said it had reports of nine related crashes and two injuries. It provided GM in July with additional field reports that prompted the automaker to open an investigation. GM said it could affect braking in "rare circumstances." The NHTSA said in a statement the "vehicles may experience brake boost failure, which would require increased brake pedal effort, leading to a hard brake pedal feel, and potentially increased stopping distance." GM said dealers will reprogram the electronic brake control module to improve how the system utilizes the hydraulic brake boost assist function when vacuum assist is depleted. GM said the vacuum assist pump, which is lubricated with engine oil that flows into the pump through a filter screen, can in some cases lose effectiveness over time, as debris such as oil sludge can accumulate on the filter screen. GM told NHTSA that prior model years used a different brake assist system design, and vehicles manufactured after 2018 were not equipped with the affected pump design. Separately, GM said on Wednesday it is recalling 270,000 additional U.S. vehicles in three smaller recalls, including 177,000 2018 Chevrolet Malibu cars with 1.5L turbo engines because an error in the engine control module software may result in the fuel injectors being disabled.

2020 Cadillac CT4-V First Drive + Video | The Cadillac of compact Cadillacs

With the launch of the 2020 Cadillac CT4, GM is pushing back into the smallest luxury sedan segment that in recent years has almost exclusively featured entries from Germany. We're pleased to see it return, and importantly, that it definitely came back prepared. The CT4’s key differentiator is its platform. Unlike the bulk of entry-level luxury sedans currently on the market, the Cadillac rides on a rear-wheel-drive platform. All-wheel drive is available throughout the lineup for those who need (or just want) four-season flexibility, but itÂ’s meant to be a convenience feature rather than a performance upgrade — the same is not true of its front-wheel-drive competitors. The CT4 ostensibly replaces the discontinued ATS, but reality is a bit murkier than that. Stop us if youÂ’ve heard this before, but the Cadillac CT4 is not entirely size-appropriate for the class. While the CT4 is aimed at the subcompact luxury sedan segment (and the CT5 at the compact), itÂ’s dimensionally a bit closer to the likes of the Mercedes C-Class than it is the A-Class. This gives Caddy a bit of an advantage, but itÂ’s nothing we havenÂ’t seen from GMÂ’s luxury arm before. Cadillac has chosen instead to target the segment based on price, which is a win for consumers in a way, as you can get a little bit more bang for your buck if theyÂ’re willing to take a chance on the underdog. Cadillac is offering its new small sedan in three states of tune. The base (“Luxury”) model boasts a 2.0-liter engine good for 237 horsepower and 258 pound-feet of torque. The Premium Luxury and CT4-V models get the 2.7-liter — which is still a four-cylinder — that makes 310 hp and 350 lb-ft of torque in its base tune and 325 hp and 380 lb-ft in the CT4-V. All three variants make use of GMÂ’s active fuel management tech which allows them to run on just two cylinders to conserve fuel while cruising. Yes, you read that correctly. The CT4-V boasts just 325 hp, which may seem like a pittance considering the outrageously powerful V models of CadillacÂ’s past, but GMÂ’s luxury arm has decided to re-jigger its performance hierarchy by eliminating “V-Sport” entirely, shifting “V” down to fill that role, and introducing a series of new range-topping performance models dubbed “Blackwing.” In that context, the CT4-V may seem like an also-ran, but consider the company it keeps.

If Cadillac’s smart, the CT5 will be a CTS without baggage

Cadillac is, mercifully, about to rationalize its lineup, something that's been a long time coming. The CTS is one of those cars that gets admiration from reviewers, like us, for a concerted effort from GM to engineer an underlying platform that matches the Germans in terms of raw dynamics. From buyers, it gets not even a shrug as they, oblivious to its existence, walk right into BMW and Mercedes dealerships. The reasons for this have a lot to do with the sheer brand recognition, and the image, of the German competitors. You can't really lay that all at GM's feet, but what you can do is critique the uninspired drivetrain selection. The 3.6-liter V6 is a crude implement, making its 335 horsepower roughly. The BMW's equivalent inline six makes its power smoothly, with modern forced induction. There's no directly comparable E-Class sedan until you get into the V-Sport versus E43 situation, but the turbo four is smooth. And the interior? No question. The Mercedes is jaw-slacking. The story for the CTS's turbo four is largely the same. Some blame also has to be leveled at the first- and second-generation CTS sedans, which adopted an odd strategy: sell a slightly larger sedan to folks looking at 3-Series, A4, and C-Class, but at about the same price. Folks weren't interested in a larger car for the same money. Despite the third-gen CTS's growth into the 5-Series size class, the CTS still seems like an odd in-betweener in the sport luxury segment – psychologically, if not physically. CTS sales are in the toilet in 2017, and GM is smart to shake things up. So with the announcement that Cadillac head honcho Johan de Nysschen has finally been allowed to kill off underperforming models, the CTS is toast. (As is the ATS, and much more importantly, the XTS – a shambling dinosaur of a sedan.) What's next is the CT5, and that's what we're interested in now. Cadillac has until 2019 to figure out what the CT5 actually is. That isn't a lot of time, so our money is on it being a repositioned, rationalized CTS. The platform's not bad; it's heavier than the larger CT6, but it's fairly modern. Sadly, it's unlikely that any of the standard powertrain options will get a revamp, but maybe some additional sound deadening or an active engine mount system to reduce NVH will quell the V6's bad habits. View 32 Photos More importantly, Cadillac will get a chance to work on the interior look, almost certainly aligning it more closely with the much improved CT6. That'll help a lot.