2000 Gmc Jimmy Envoy Sport Utility 4-door 4.3l on 2040-cars

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GM considering new powertrain options for large SUVs

Aside from the new General Motors offerings, there's not a whole lot of action going on in the fullsize SUV segment. That doesn't seem to be stopping GM from pushing the envelope in the market as Automotive News is reporting that the automaker is looking to introduce some new powertrain options into the Chevy Tahoe (and Suburban), GMC Yukon (and Yukon XL) and the Cadillac Escalade - all have been redesigned for the 2015 model year.
Now, we already know that GM and Ford are collaborating on nine- and ten-speed transmissions for a broad range of applications (including the big SUVs), but this new report says that GM is also considering other options as a way to one-up the competition and, of course, to optimize fuel economy. AN quotes Jeff Luke, executive chief engineer for GM trucks, as saying that "interesting powertrain technologies" are coming including a return of a hybrid SUV and possibly even a diesel engine. Although it sounds like the latter could come down to how customers respond to the 2014 Jeep Grand Cherokee EcoDiesel.

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!"

2015 GMC Canyon gets the party started [w/video]

The 2014 Detroit Auto Show press days officially kick off tomorrow, but the night before all the madness commences, General Motors drove its new 2015 GMC Canyon pickup truck out for all to see. To refresh your memory, the Canyon is GMC's new midsize pickup - essentially a re-skinned version of the Chevrolet Colorado that debuted at the LA Auto Show in November.
Many of us at Autoblog prefer the look of the larger GMC Sierra to that of its Chevy Silverado kin, and we're having similar feelings about the new Canyon, especially after seeing it in person. It's sort of a pint-sized version of the Sierra, and it looks great. Clean lines are found throughout, and the Canyon's styling is decidedly premium.
At launch, the Canyon will be offered with the same engines as the Colorado - a 2.5-liter inline four-cylinder engine with 193 horsepower and 184 pound-feet of torque on the base end, and a larger 3.6-liter V6 with 302 hp and 270 lb-ft as an option. The Colorado's 2.8-liter diesel inline four-cylinder will be available after launch. Both two- and four-wheel drive configurations will be available, depending on the model.