2004.5 Gmc Sierra 2500hd 4x4 Duramax. Mechanic Special on 2040-cars

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2019 GMC Sierra Denali First Drive Review | The more things change...

ST. JOHN'S, Newfoundland — Canadians love their GMCs. Both anecdotal and statistical evidence supports this. In certain areas of Canada, the Sierra outsells the Chevy Silverado. But in this area of Canada, Cape Spear, the morning fog and salt air are thick. This is the most eastern point in Canada, and the most eastern point of North America if you don't count Greenland. We woke up early and drove to the coast in the new 2019 GMC Sierra Denali, hoping to catch what was promised to be an absolutely spectacular sunrise. The sunrise was a no-go thanks to the fog, turning the sky into a grey mist that melted into the Atlantic. Still, if the world had an edge, this is what it would look like. Driving in an inspiring place like this invites introspection, and since we're in an GMC Sierra, why not examine the brand's place in the world? Recall that for years, a GMC showroom was just packed with slightly more expensive versions of other GM products. Badge engineering, if you will – a dirty word in our business, applied to such notable machines as the Cadillac Cimarron, Buick Terraza, Chevy Aveo and Saab 9-7X. Things, at least on the surface, seem to be changing. GMC says it's making a concerted effort to differentiate its product portfolio from the rest of GM, but the results have been mixed. The brands were supposed to have less product crossover. There's no GMC version of the Chevy Traverse and, initially, there was no Chevy equivalent of the GMC Acadia, though the new Blazer kills that advantage. The Equinox and Terrain are still basically the same vehicle, as are the new 2019 Silverado and 2019 Sierra. At least the two trucks look decidedly different. There's still a family resemblance, but most of the bodywork has been changed. Where the 2019 Silverado adopted some curves, the Sierra stuck with straight lines. Compare things like the headlights, wheel wells and doors. The Sierra still has a massive grille and — aside from the AT4 off-road trim — packs on as much chrome as a 1958 Cadillac, but that's what customers want these days. The Ford F-150 and Ram 1500 are no different in this regard, packing lots of chrome, hard edges, and frontal areas that would give passenger trains a run for their money. At first glance, you'd be hard pressed to tell the Sierra and Silverado's interiors apart from both each other and the outgoing models. It's basically the same design, though the Sierra makes do with some slightly nicer materials.

2022 GMC Sierra spotted with minimal camouflage

By all accounts, GM's current full-size truck twins, the Chevrolet Silverado and GMC Sierra, are good trucks that are in many ways competitive with the sales-leading Ford F-150 and a fresh Ram 1500 that's regularly nipping at the Bowtied truck's tailgate. Considering the cashflow generated by the segment, though, it's no surprise to see a refreshed version of the GMC Sierra testing with some light camouflage hiding some of the upgraded bits and pieces. We'll get to what we can see in just a moment, but first we'll point out what we can't see in these spy shots. What the GM pair really needs is a competitive interior. The current Silverado and Sierra are bridled by dashboards, door panels and instrument clusters that simply aren't good enough when compared to their Ram and Ford competitors. We've spoken with a few designers from GM, and they are well aware of the criticisms that have been levied at their full-size truck duo, so we'd be shocked if there wasn't a heavily revised interior lurking for the trucks' next refresh. Hopefully a future set of spy photos will give us a better look at what's inside, because from this far-away, through-the-windshield look doesn't give us much information. Will the Sierra share an interior with the redesigned Yukon? We'll just have to wait and see, but suffice it to say that any improvement will be welcome. Moving to the exterior, we can clearly see that the blocky, angular look of the current Sierra will continue through this refresh. A tiny look through the heavy tarp covering the truck's face reveals a black plastic mesh grille, but we're sure there's plenty of chrome hiding under there, too. We're left to wonder if that opening allows for a camera or radar to peek through, but rumors suggest GM's well-regarded Super Cruise could be on the menu within the next few years. We have no idea what's under this test truck's hood, but we wouldn't imagine there will be much change to the current truck's solid list of powertrain options. Here's hoping the 3.0-liter Duramax inline-six diesel engine gets the cooling it needs to raise its tow rating to match its class-leading efficiency, because it's arguably otherwise the best light-duty diesel offering in America. We know the automaker is working on electric powertrains, too, but we expect to see those debut first in the Hummer-branded truck that will be sold in GMC dealerships.

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.