2008 Gmc Envoy Sle1 on 2040-cars

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2019 GMC Sierra 1500 taillights revealed in teaser

With just one day before the GMC Sierra's reveal, GMC decided to show one last teaser of the full-size pickup truck. This time it shows the tail of the truck. And, by that we mean just the taillights and the badge, and playing with Photoshop revealed nothing else. The same goes for a profile-view teaser released slightly earlier than the rear-view image. Still, this is the clearest look we've had of the Sierra's rear lights, and they have a similar wrap-around element, possibly LED-lit, to that of the smaller GMC Canyon. It also looks like the lights will look wider from the rear than those on the Silverado, mainly because the GMC's lights don't have an indentation in the middle. GMC also released a teaser of the truck's profile. Both the head and taillights wrap farther around the sides than on the Silverado. The headlights are also less square than the outgoing Sierra, giving the truck a slightly sleeker look. We'll see the whole truck and get details on what powers it on March 1 when it's fully revealed. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

Weekly Recap: Lamborghini fires on all cylinders

Lamborghini added 192 technicians and specialists in 2014 as the Italian automaker expands under the ambitious growth strategy of parent company Volkswagen AG. The additional workers helped Lamborghini increase its sales 19 percent last year to 2,530 supercars, and further expansion is planned for this year. Lambo has added more than 500 people in the last four years, bringing its headcount to 1,175. "Lamborghini is undergoing a strong phase of growth in both sales and in terms of recruitment," CEO Stephan Winkelmann said in a statement. "We invest significantly in our people ... in 2015 we plan to hire further." The supercar maker's solid performance last year came during a time of transition. Lambo sold off the final 265 Gallardos, which were the brand's best-selling models ever. Its 10-cylinder successor, the Huracan, immediately filled the void. It garnered 3,300 orders, and 1,137 of them were delivered in 2014. The other Lamborghini, the 12-cylinder Aventador, saw its sales increase 13 percent to 1,128 copies. The sales leap comes as Volkswagen drives sales expansion across its portfolio of brands. The German carmaker sold 10 million vehicles around the world for the first time last year. Though Lambo will never make supercars in great numbers, it is expected to contribute to VW's bottom line through its image and profitable sales. Look for further growth this year, and a Super Veloce version (shown above) of the Aventador has already been spotted during testing. Lamborghini has been working on a sport utility vehicle for years, though the company has never publicly approved the project. It also showed a hybrid, the Asterion, at last year's Paris Motor show, suggesting the automaker is considering an electric future. Other News and Notes GMC ponders Jeep Wrangler fighter GMC is considering adding a competitor to the Jeep Wrangler and has discussed the idea with its dealers, according to the Wall Street Journal. Details of the vehicle are unclear, but the report suggested the vehicle could have cues from General Motors' old Hummer brand. The move would broaden GMC's lineup of trucks and SUVs and attract new customers. GMC sold 501,853 vehicles in 2014, making it GM's second-best selling brand. GMC had more volume than Cadillac and Buick combined, though it's still well behind Chevrolet's tally of more than two million vehicles. The notion of a "Wrangler fighter" could be a moving target.