2014 Chevrolet Camaro 2ss on 2040-cars

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Fullsize GM SUVs have a problem that's making owners sick

Some fullsize SUV owners are getting sick, thanks to a buffeting and vibration problem in 2015 model year examples of the Chevy Tahoe and Suburban, Cadillac Escalade, and GMC Yukon. According to owners' complaints to the National Highway Traffic Safety Administration, the issue can vary from an annoying vibration inside the cabin to an experience so severe that it leads to dizziness and headaches. General Motors is aware of the complaints, but the fix isn't so simple. According to spokesperson Tom Wilkinson to Autoblog, the company "has been tracking this issue for a while." The problem has a fairly low incidence rate, but when it does occur the issue can be "uncomfortable and annoying for owners." There's no precise cause for the issue, Wilkinson claims, and in some cases, simply balancing the tires or changing the door seals can make it go away. However, not all of the fixes are so simple. AutoGuide dug deep into the problem and discovered a GM preliminary information bulletin that advised dealers to remove the headliner and to check the roof's bonds to the bows that go across the vehicle. However, that document included a note that the solution might not entirely eliminate things. According to AutoGuide, adding Dynamat insulation to the roof sometimes helped the problem. A GM spokesperson also told AutoGuide the company fixed the problem at the end of the 2015 model year, and didn't go into any more detail. This roof issue seems linked to some of the worst droning in these SUVs. According to one complaint from a 2015 Suburban owner to NHTSA: "Roof will not remain attached to the roof bows. This causes the buffeting similar to a window being down when all are up. The results span from annoying to painful." A 2015 Yukon owner claims to have another alleged cause for the problem in a NHTSA complaint from February 2015. This person brought their SUV to the dealer seven times over the course of four weeks for vibrations. The dealer replaced the driveshaft, suspension components, and more, but nothing worked. According to an engineer to the service adviser: "In an effort to prevent roll overs, they designed the frame and body mounts too stiff. There are 40 engineers working on issues, they have no solutions that work across the board." Wilkinson told Autoblog that GM is working with customers on an individual basis to rectify things. Since these are newer vehicles, dealers should also fix the problem under warranty.

The Chevrolet Camaro 1LE returns with V6 or V8 power

The Chevy Camaro's performance variants are legendary, and enthusiasts have long lusted after the Z/28 and ZL1. But there's a lesser-known model that shouldn't be overlooked: the 1LE. It's Camaro code for performance on the track. The 2017 Camaro 1LE debuts this week at the Chicago Auto Show and goes on sale late this year. The 1LE package will be offered for the first time on V6 Camaros, as well as the traditional V8-powered SS. The cars have upgraded suspensions, better brakes, aerodynamic treatments that create more downforce, and improved cooling features. The goal is simple: faster laps. "This is all grip and handling and cooling," said Todd Christensen, Camaro marketing manager. It's an enthusiast special, transforming your basic Camaro into a more capable track machine. The 335-horsepower V6 and 455-hp V8 are unchanged (and only come with six-speed manual gearboxes), because the focus is on improving the Camaro's reflexes. That means different things, depending on the engine choice. Here's how they break down. V6 1LE The V6's 1LE package is based on the LT trim and it pilfers the best chassis pieces from the V8 model, including the FE3 suspension with stabilizer bars. It also has a mechanical limited slip differential (3.27 ratio) and four-piston Brembo brake calipers in front. The fuel system is also borrowed from the SS, and it all rolls on 20-inch forged aluminum wheels wrapped in Goodyear Eagle F1 rubber measuring 245/40R20 in front and 275/35R20 in back. Christensen says Chevy added the 1LE pack for the V6 because customers actively wanted it, and for a reasonable price (we hear the 1LE will cost about the same as the fifth gen's $3,500 option) they can transform their V6 into a car that's as track capable as the SS. While it's giving up 120 hp, a V6 Camaro 1LE will also be more than 200 pounds lighter than the eight-cylinder 1LE. Chevy noticed the customer interest for a V6 1LE and will study offering the pack on Camaros with the turbocharged four-cylinder engine. Consider the V6 a test case. "I'm anxious to get some customer feedback [from the V6]," Christensen said. SS 1LE Even though it's heavier, the SS 1LE offers a lot of goodies that make it three seconds faster than a normal SS, according to Chevy's testing at Willow Springs Raceway in the California desert. The spotlight features in the SS are Magnetic Ride Control for the FE4 suspension and electronic-slip differential (3.73 ratio).

CNG Chevy Impala launch delay grows to a year

The 2015 Chevrolet Impala Bi-Fuel was announced in Washington D.C. in late 2013 by Dan Akerson and was supposed to be on sale by the summer of 2014. Capable of running on gasoline and compressed natural gas, the sedan was said to offer a novel solution at a time when gas prices were high. The vehicles still haven't arrived at dealers, though, and according to Automotive News, a quality issue has set back the launch even a few months more. Using a modified 3.6-liter V6 with hardened valves and valve seats, the Bi-Fuel Impala has separate tanks for gasoline and CNG that it can switch between on the fly. When running on the cheaper natural gas, the sedan was estimated to get 19 miles per gallon in the city and offer 150 miles of range, and the total driving distance was predicted at around 500 miles. The base price was set at $38,210, after the $825 destination charge. The only other major tradeoff was a smaller trunk to accommodate the extra fuel. However, the first shipments of the bi-fuel models now aren't expected until mid-July – about a year later than the scheduled launch. A memo to dealers obtained by Automotive News said the sedan "has been delayed by a second quality hold" to look at the CNG system. The exact details surrounding this problem haven't been released. "We have identified a solution to the delay and are working hard to implement it within the next few months," General Motors spokesperson Chad Lyons said to Automotive News. Around 200 Bi-Fuel Impalas have been made, but none are yet in the hands of customers. Dealers should be able to order 2016 model year examples starting in the third quarter of this year.