11 Gmc Sierra 2500hd Denali 6.6l Duramax Diesel Nav Roof Low Miles 1-owner Clean on 2040-cars

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NHTSA closes 4-year GM investigation, issues common sense advisory [w/video]

Since January 2011, the National Highway Traffic Safety Administration has been investigating a possible problem with corroding brake lines in General Motors' GMT800-platform models, like the Chevrolet Silverado and Suburban and GMC Sierra, in states with salt on their roads in the winter. However, as opposed to launching a full recall of millions of vehicles, the government is issuing a common-sense safety advisory to all drivers in snowy states to keep their vehicle's undercarriage clean. It even has a video explaining things. "Older-model vehicles, often driven in harsh conditions, are subject to corrosion over long periods of time, and we need owners to be vigilant about ensuring they, their passengers, and others on the roads are safe," said NHTSA Administrator Mark Rosekind in the announcement of the end of the investigation. The agency was clear in its report that "brake line corrosion seen in the GM vehicles was not unique," and the government "has not identified a defect that would initiate a recall order." Instead NHTSA is advising drivers, especially those of vehicles from before 2007, to wash their vehicle's undercarriage in the winter and spring to remove salt or other de-icing chemicals. It also recommends regular checks by a mechanic to make sure everything is in proper order. According to the investigation documents, for just the GMT800 platform models, NHTSA found 3,645 complaints of brake line corrosion, which included allegations of 107 crashes and 40 injuries. The issue was found to be more common in vehicles over 10 years old. GM has released a statement (embedded below) that the company "supports the consumer advisory from NHTSA urging regular maintenance and care of brake lines on older vehicles." NHTSA Closes Investigation into Brake-Line Failures NHTSA 13-15 Thursday, April 9, 2015 Agency issues safety advisory on preventing undercarriage corrosion WASHINGTON – The Department of Transportation's National Highway Traffic Safety Administration (NHTSA) today issued a Safety Advisory and consumer video encouraging owners of model year 2007 and older trucks, SUVs and passenger cars to inspect brake lines and thoroughly wash the underside of their vehicles to remove corrosive salt after the long winter in order to prevent brake-line failures that increase the risk of a crash.

2018 GMC Terrain Drivers' Notes Review | Summon the Druids, it's a better Equinox

We've had plenty of time in the all-new Chevrolet Equinox, testing it with all three of its available turbocharged four-cylinders: the 1.5-liter, the 2.0-liter performance upgrade and the diesel fuel economy upgrade. Finally, however, we get a turn behind the wheel of its brother from a different corporate mother: the 2018 GMC Terrain. This duo is certainly one of the most disparate pairings in GM's long badge-engineering past, with virtually no visual similarities inside and out. They're even less similar than the last Equinox-Terrain, which themselves were a far-cry from the Blazer-Jimmy days. They're largely the same under the skin, however, including their selection of engines. For the 2018 Terrain, we sampled the 1.6-liter four-cylinder turbodiesel good for 137 horsepower and 240 pound-feet of torque. It's an unusual powertrain to be sure, as no other compact crossover SUV in this country offers one (though Mazda has been threatening to do so for years now), but boasts an EPA-estimated fuel economy rating of 28 mpg city, 39 mpg highway and 32 mpg combined with front-wheel drive. It's basically the same with all-wheel drive. The as-tested price of the SLT Diesel was a rather hefty $39,605. It did, however, have most options, including the Infotainment Package II and Driver Alert Package II that together include all the extra entertainment and safety gadgets. Contributing Editor James Riswick: Let's be honest, the main difference between the 2018 GMC Terrain and its Equinox sibling is the way they look. As such, I can definitively say I prefer the Terrain. It's far more cohesive and better proportioned than the rather dumpy Equinox. It also avoids the garish over-adornment of the last Terrain even if the floating roofline D pillar has passed its expiry date. I think the interior looks better too. As for the way it drives, the 2018 Terrain demonstrates great improvements from one generation to the next. The steering in particular is greatly superior in its feel and feedback. Body motions are also kept nicely in check. Is it a Mazda CX-5 or Ford Escape beater? No, but it's far more confidence inspiring now. So that's the good. Now, the extremely bad. This diesel engine vibrates so much I can't imagine anyone taking one for a test drive and choosing it over the 1.5-liter gasoline turbo. You feel it through the wheel, the pedals and the seat of your pants constantly. It's particularly bad when stopped and even present when just cruising on the highway.

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.