2011 Gmc Sierra 2500 Denali on 2040-cars

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Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"

GM recalling Silverado and Sierra HD diesel pickups over fuel gauge follies

General Motors is recalling 9,733 of its heavy-duty twins over concerns with their 6.6-liter diesel engines and dual fuel tanks. The recall covers some Chevrolet Silverado HD and GMC Sierra HD pickups from model years 2012 and 2013, although the exact dates that the recalled trucks were built isn't specified. There's also no mention of how many models come from Chevrolet and how many are from GMC.
The problem rests with the transfer pump responsible for moving fuel from the rear tank to the front tank - it could fail, resulting in an inaccurate fuel gauge. It hardly requires explaining, but a faulty fuel gauge could leave drivers in a situation where they run out of diesel.
GM will begin notifying customers of affected vehicles, who will be asked to report to their dealers for a free replacement transfer pump.

GM to sell rebranded Peugeot vans in US?

According to a report by France's La Tribune cited by Reuters, General Motors and Peugeot are discussing the possibility of selling PSA Peugeot-Citroën commercial vans in the US through The General's dealership network. While specific models and what brand they may sell under stateside are not immediately clear, the move isn't entirely out of the blue, particularly since GM owns seven percent of the French automaker.
Peugeot and GM already have a joint-venture agreement to ease costs associated with vehicle development and procuring parts, and while the progress of the arrangement has been inhibited some by Europe's difficult economy, the two automakers are looking to expand the relationship. With sales in the dumpster, Peugeot's long-term prospects have looked particularly shaky as of late, and GM could use a modern commercial van lineup to better compete with North America's suddenly modern and Euro-fied competition. Mercedes-Benz kicked off the high-roof trend with its Sprinter, and for 2014, Ford is following with its Transit van (joining its smaller Transit Connect sibling), while Chrysler is leveraging its relationship with Fiat to rebrand the Ducato range of vans as Ram Promaster models.
Peugeot already has a full line of commercial van solutions in its stable, from its compact Partner and Bipper models to the larger Expert and Boxer models, which are available in a variety of cargo and people-carrying configurations.