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2018 Buick Enclave: How engineers made it larger, lighter, more sophisticated

Buick used the unveiling of the 2018 Enclave at the New York Auto Show to introduce its new range-topping Avenir sub-brand to the world. With fancier interior finishes and exterior details, it's Buick's latest effort to make itself a proper luxury brand (or perhaps re-establish itself as such). However, lost in the Avenir song and dance is the fact that the 2018 Buick Enclave is a (very) long-awaited all-new model regardless of the trim level one selects. Like the Chevrolet Traverse upon which it is based, the new Enclave is bigger than the vehicle it replaces but considerably lighter, by about 400 pounds. "We told every engineer, 'get your job done, but then take the weight out,'" said engineer Rick Spina as we hovered next to his larger yet lighter creation. His team therefore set about taking a little bit of weight out from just about everywhere, from using additional aluminum in the suspension to varying the thickness of the frame (thicker in places that needed to be stronger, thinner and therefore lighter in places that didn't). Only about 100 pounds came out of the body with the rest coming from elsewhere. Not only will the reduced weight improve fuel economy (Buick-estimated at 19 mpg combined with FWD versus 18 for the 2017 model) and presumably the old Enclave's rather ponderous handling, but it should only make things easier for the new powertrain: General Motors' now-familiar 3.6-liter V6 and its latest nine-speed automatic. With 302 horsepower and 260 pound-feet of torque, Buick says the new engine will need 7.2 seconds to reach 60 mph with FWD or 7.5 seconds with AWD. That's a second quicker than before. Besides acceleration, towing is also bumped up by 500 pounds to 5,000. For those models with all-wheel drive, the Enclave has the same basic system featured on range-topping versions of the Buick LaCrosse. Besides power being sent front and rear, it can also differ from right to left in the back, although Spina is quick to point out that capability is for traction-enhancing purposes rather than sporty, handling-enhancing torque-vectoring ones. Buick owners already appreciated the Enclave for its quietness so the engineers decided to take it that much further. This included altering the exhaust, improving body sealing (there are triple door seals), including active sound deadening and utilizing advanced materials that absorb sound as opposed to simply being thick, dense and heavy enough to keep it out.

GM recalls 500K Chevy Camaros for ignition-switch defect

General Motors issued a recall for more than a half million Chevrolet Camaros on Friday morning because of an ignition-switch safety hazard that mirrors the one at the center of the company's current crisis.
The problem affects Camaro models from the 2010 to 2014 model years. Approximately 464,712 cars are impacted in the United States, and 511,528 overall in North America. GM will alter the Camaro key to a more standard design, and will notify car owners with a recall notice in the mail.
In an announcement, the company said the ignition switches on the Camaros are fundamentally different parts than the older ignition switches found on defective cars that are responsible for killing at least 13 people and causing 54 crashes.

Two nearly new 1987 Buick Grand National 'twins' found in garage after 30 years

Back in the '80s, a Buick Grand National could leave a lot of vehicles in its dust. The final, 1987 version of the menacingly styled performance coupe produced 245 horsepower and 355 pound feet of torque, and it was never designed to sit still, let alone for 30 years. But two low-mile Grand Nationals did just that. At the time, it was widely known that nothing like the Grand National would be built again, as the Regal platform would be moving to front-wheel drive. So a lot of buyers stockpiled Grand Nationals and rarer GNX versions with the idea of making a buck on them when they gained value. Some people even bought several. That's what happened to these two cars, recently unearthed from their slumber. Thirty years of storage has turned them into barn finds instead of showroom beauties, and they haven't exactly been flawlessly preserved. A story reported on gm-efi.com shows the cars – the "Twins," as they're called – parked side to side, the way they were laid to rest decades ago, with thick dust on them. Two enthusiasts, Shawn Matthews and William Avila, originally contacted the owner, who had posted them for sale on Facebook with a staggering $200,000 asking price. After inspecting the cars and confirming they were legit, the prospective buyers managed to strike a deal for an undisclosed sum. The story does say the seller was a bit eccentric, demanding money in hand before the cars could be touched at all, but the cars were eventually acquired and transported to a shop for desperately needed refurbishing. Time has caused the headliners on both cars to droop, and it's obvious all gaskets and fluids will need to be addressed, but both cars have extremely low odometer readings: One has 807 miles on the clock, while the other hasn't even reached 600. The car with a more miles was moved "once in a while," so clearly the original owner couldn't resist giving it a go while the other one slept. We couldn't've, either. Related Video: Featured Gallery Two Old Buick Grand Nationals View 12 Photos News Source: gm-efi.com via BarnFinds Auto News Buick Classics buick grand national grand national