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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.

Win an SUV 2022 | The best giveaways of the week

Autoblog may receive a share from purchases made via links on this page. Pricing and availability is subject to change. No donation or payment necessary to enter or win this sweepstakes. See official rules on Omaze. SUVs and crossovers are a hugely popular segment in the United States, making up nearly half of total vehicles sold last year. Here are our favorite SUV giveaways we’ve found online this week. Win a Himalaya Land Rover Defender 110 Crew Cab - Enter at Omaze The Land Rover Defender is an icon. An intense, luxurious off-roader that turns heads and can crawl up nearly anything. The problem? For the past 20+ years it hasn't been available in the United States. But this Defender is different. ItÂ’s vintage, restored by Himalaya, and itÂ’s powered by a Corvette engine. Plus Omaze is giving it away.  Here are the specs of the Defender in question, according to Omaze: Maximum Seating: 4 Engine: 6.2-liter Corvette LS3 crate engine Transmission: 6-speed automatic  Drivetrain: 4WD  Exterior Color: Satin Grey Interior Color: Jet Black Maximum Horsepower: 430 hp Maximum Torque: 425 lb-ft Approximate Retail Value: $210,000  Cash Alt: $157,500  Special Features: Black exterior roll bars and trim; Black 18” Sawtooth wheels with 35” tires; Wilwood™ brakes; 3" lift; Black diamond-stitched leather sport seats; MOMO Millenium steering wheel; front and rear matching consoles; Himalaya gauge cluster; Himalaya front and rear bumpers, bed-mounted tire carrier, and extended fender flares; Puma hood; LED lighting YouÂ’re probably asking yourself, what does it take to win? First of all, according to Omaze, "no donation or payment is necessary to enter or win this sweepstakes." $10 will get you 100 entries in this sweepstakes, while $50 will get you 1,000 entries and $100 will get you 2,000 entries. The best part? Each paid entry raises money for a worthy cause. See more about these causes at Omaze. Other Omaze sweepstakes: Win an Airstream Interstate 24X Win a 1958 Porsche 356 A - Enter at Omaze Win a Restored 1969 Pontiac GTO - Enter at Omaze Win a 2022 Porsche 911 GT3 - Enter at Omaze For these and more vehicle sweepstakes, check out Omaze.com. Enter quickly, they won't last forever. Bentley Chevrolet Ford Land Rover Commerce SUV

Watch NASCAR racer Jeff Gordon put one over on a used car dealer... sorta

Full Disclosure: in my younger days, I loved nothing more than tormenting passengers with my behind-the-wheel hijinks. Once, after a particularly artful handbrake turn on a two-lane at around 50 miles per hour, I left one backseat occupant crying in their own lap. This isn't necessarily something to be proud of, but it gives you a glimpse into why it is that I find this ad from Pepsi so damn disappointing. The premise is beautiful. Take NASCAR legend Jeff Gordon, give him a disguise and set him loose upon some unsuspecting used car dealer. Hilarity ensues.
Except that this Pepsi Max commercial is so obviously staged, it can't help but feel like some ham-fisted marketing fail. From the strategically placed aftermarket cupholder mounted mid-dash for the hidden camera to the fact that the supposed dealer Camaro is displayed as a 2009 model (Hint: Chevrolet didn't make any), this clip is about as organic as a Twinkie. Still, we would never turn down a chance to watch Gordon thrash on a rental-spec coupe - only problem is, he probably didn't even do the driving himself. Check it out below.