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'84 MotorWeek Cherokee, Bronco and Blazer comparison indulges your SUV nostalgia

These days, truck-based, full-frame SUVs are somewhat of a rarity on the auto landscape due to the rapid rise in popularity of easier-driving, car-based crossovers. Although, without the gradually building popularity of these chunky, high-riding vehicles decades ago, it's unlikely that America's roads would be filled with so many CUVs today. In its latest dig into the archives, MotorWeek has found a 1984 comparison test of a trio of these early Sport Utility Wagons, as long-time host John Davis called them, that helped get acceptance of this segment going. This is a red, white and blue test of the SUVs from American automakers at the time and pits the Chevrolet Blazer, Ford Bronco and Jeep Cherokee (specifically in Wagoneer guise) against each other. Driving manners and interior usability are considered in the evaluation, but Motorweek actually takes these vehicles off road, too. Among the bigger revelations is the improvement in on-road ability in the past 30 years. While specific 0-60 times aren't given, all three models take around 10 seconds just to get to around 50 miles per hour in the 500-feet on-ramp acceleration test. Check out this clip to see just how far this segment has progressed in the past three decades or just get a blast of nostalgia from these now vintage models. News Source: MotorWeek via YouTube Chevrolet Ford Jeep SUV Off-Road Vehicles Classics Videos Ford Bronco chevy blazer

Chevy Colorado Z71 Trail Boss 3.0 concept heads to SEMA

Chevrolet is presenting a new take on the Colorado pickup at the SEMA show this year. The show truck picks up where the Colorado Z71 Trail Boss Edition leaves off, with numerous accessories from the parts catalog as well as several custom additions. The SEMA truck is based on a Crew Cab model with four-wheel drive, painted red with rally stripes. Among the features added from the catalog are a sport bar with LED auxiliary lighting, mounted to the cargo bed. It's also stylistically augmented with fender blares, Bowtie emblems, and rocker steps all done up in black to match the 17-inch alloys shod with Goodyear DuraTrac all-terrain tires. Chevy has also equipped this truck with an automatic locking rear diff, a transfer case shield, recovery hooks at the front, a spray-in bedliner, projector-beam headlamps, fog lamps, and all-weather floor mats. Chevy has also fitted this pickup with color-keyed door handles and mirror caps, upgraded exhaust and air intake, rubber floor liners, brushed metal interior trim, and an illuminated grille badge. Public reception will determine how many of these and other additional features will be considered for production. Colorado Z71 Trail Boss 3.0 Concept Shows Off-Road Style New styling accessories, performance parts enhance trail-ready capability LAS VEGAS – The Colorado Z71 Trail Boss Edition is designed for those who want to blaze their own trails and Chevrolet's new Z71 Trail Boss 3.0 concept vehicle enhances its off-road style with new Chevrolet accessories and performance parts. Chevrolet introduced the new concept vehicle at the SEMA Show today, where it joined concept versions of the Silverado 1500 and HD models to demonstrate the depth and breadth of the brand's three-truck lineup. "The Colorado Z71 Trail Boss Edition is made for tackling the tough terrain required to get away from it all and this concept version does it with rugged style," said Sandor Piszar, director of Chevrolet Truck Marketing. "And whether it's the Colorado, Silverado 1500 or Silverado HD, there's a Chevy truck to take you where you want to go, regardless of whether there's a road leading there." The production 2016 Colorado Z71 Trail Boss is offered in extended and crew cab configurations, with a choice of a long or short cargo bed and available 4WD – as well as the all-new 2.8L Duramax turbo-diesel, which takes the maximum trailering rating up to 7,700 pounds.

GM exploring ways to raise half-ton Duramax diesel tow rating

Lots of truck owners cheered when GM announced fuel economy numbers for the 2020 Chevrolet Silverado with the 3.0-liter Duramax diesel inline-six. Even after Ram let loose its EPA mileage ratings for the 2020 Ram 1500 EcoDiesel, the Chevy oil-burner still took the trophy. The victory was years in the making, GM engineers spending an entire four-year development cycle refining the LM2 Duramax to increase mileage. The tradeoff, as well all know by now, is towing; the Duramax in half-ton duty pulls a maximum 9,300 pounds in the Silverado. Rivals across town can do more, the Ford F-150 PowerStroke rated at 11,500, the Ram 1500 EcoDiesel game to pull 12,560. GM engineer John Barta told Muscle Cars & Trucks that more hauling chops could be on the way, explaining, "We’re actually looking at upgrading some of the materials around (the engine bay) to see if we can maybe raise our tow rating." Engine bay materials are at issue due to thermal complexities underhood. John Barta, GM's assistant chief engineer of diesel engine controls, said the Duramax's inline-six configuration allowed engineers to get emissions hardware like the combined selective catalytic reduction, diesel oxidation catalysts, and diesel particulate filter unit closer to the engine, where it heats up quicker, getting emissions down quicker. But that filter puts another heat source in those confines, enforcing a cap on the tow rating to keep the engine and other systems from overheating. "If you look under the hood," he said, "youÂ’ll see a significant amount of silver ‘moon tapeÂ’ around to make sure things arenÂ’t getting overheatedÂ… if we were to go up in higher towing, which we can, we start impacting the possibility of deteriorating some of the components.” There isn't much space for more grille, so swapping for a better grade of "moon tape" or a different kind of material could reduce engine bay heat, extracting a higher tow rating in the process.  It's important to note a point Barta's been making for months about the Duramax figures, though. "Even though itÂ’s nice to brag about big numbers, in reality, light duty customers are not towing that large with their trucks," and, "We do know that (95 percent) of our light duty customers donÂ’t tow over 9,000 pounds." On our First Drive of the 2020 Silverado diesel we called out the tow rating, but emphasized that the Chevy and GMC have more important challenges to overcome.