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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.

2016 Chevy Camaro coming on May 16

We officially have a date for the arrival of the sixth-generation Chevrolet Camaro. Fans of Chevy's Mustang fighter should look forward to May 16, and if they're in the Detroit area, they'll want to make their way down to Belle Isle, home of the Chevy Indy Dual in Detroit. We still don't have a great deal of information on the new Camaro, aside from what's been gleaned in spy shots and the like, although Chevy's press release was accompanied by the image shown above. That, friends, looks a lot like the Camaro's badge of old. Its presence here could be an indication that an old logo is set to return to production. That's because what Chevy is planning could best be described as a jamboree, or Camaro-palooza, if you prefer, rather than a typical unveiling. Chevy is inviting up to 1,000 Camaro fans to descend on Belle Isle for a day-long event that will offer up a lot more than their first look at the sixth-generation muscle car. Fans can hot lap the Belle Isle circuit from the passenger's seat of a new Z/28, check out a Camaro "museum," featuring "the most significant vehicles from the brand's history," and chat with some of the Camaro's designers and engineers. "This will be an event Camaro fans will not want to miss," Camaro marketing manager Todd Christensen said in a statement. "This is only the sixth time we have introduced an all-new Camaro. We wanted to share the moment with the customers and fans who have helped make Camaro both America's favorite performance car for the past five years, and a cultural icon since 1967." We'll almost certainly be on hand for the debut (and you'll absolutely be able to get all the details here). And as we said, if you happen to be in the Detroit area in mid May, you can register to attend the unveiling. All you need to do is head over to Chevy's dedicated website for the sixth-generation Camaro and sign up for the big event, on Saturday, May 16. Scroll down for the full press release. 2016 Camaro Drops Cover on May 16 in Detroit DETROIT – Chevrolet is inviting fans to see the all-new 2016 Camaro on Saturday, May 16, in Detroit. The sixth-generation Camaro will cap a day-long celebration on Belle Isle, the 982-acre island park that is home to the Chevrolet Detroit Belle Isle Grand Prix May 29-31. "This will be an event Camaro fans will not want to miss," said Todd Christensen, Camaro marketing manager. "This is only the sixth time we have introduced an all-new Camaro.

Chevy recalls 73k Cobalts for side airbag non-deployment

Chevrolet is recalling 73,424 examples of the 2010 Cobalt in the US and Canada because the driver's side curtain airbag might not deploy in a crash. These vehicles carry build dates between January 4 and June 23, 2010, and, specifically, 59,474 of them are in the US. "GM is aware of one crash with one injury that may be related to this condition," the company said in a statement. The problem occurs because of improper routing of the side-impact sensor wiring harness in the driver's door, and there can be a short circuit causing the curtain airbag not to deploy. The campaign to fix the issue will begin on August 26. Dealers will inspect the vehicles and will repair the issue on any affected examples. Related Video: GM Statement: General Motors is recalling 59,474 2010 Chevrolet Cobalt sedans in the U.S. because some of them may have been built with improper side impact sensor wire routing in the left front door. Dealers will inspect all suspect vehicles and any found with the condition will be repaired free of charge to the customer. GM is aware of one crash with one injury that may be related to this condition. Including vehicles sold in Canada, the total recall population is 73,424. RECALL Subject : Improperly Routed Side Impact Wire Harness Report Receipt Date: AUG 10, 2015 NHTSA Campaign Number: 15V500000 Component(s): AIR BAGS Potential Number of Units Affected: 59,474 All Products Associated with this Recall Vehicle Make Model Model Year(s) CHEVROLET COBALT 2010 Details Manufacturer: General Motors LLC SUMMARY: General Motors LLC (GM) is recalling certain model year 2010 Chevrolet Cobalt vehicles manufactured January 4, 2010, to June 23, 2010. The affected vehicles may be equipped with an improperly routed Side-Impact Sensor (SIS) wiring harness in the driver side front door. The misrouted wiring harness could cause an electrical short that disables the driver side curtain air bag. CONSEQUENCE: A disabled driver side roof-rail air bag will not deploy in the event of a crash necessitating deployment of that air bag, increasing the risk of injury to the driver. REMEDY: GM will notify owners, and dealers will inspect the sensor's wiring in the driver's door and make repairs as necessary, free of charge. The recall is expected to begin August 26, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 15075.