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2015 Chevy Silverado, GMC Sierra can tow up to 12,000 pounds

Think back to the launch of the 2014 Chevrolet Silverado. At the time, General Motors happily trumpeted that its fullsize pickup could tow up to 11,500 pounds when properly equipped - impressive stuff, no doubt. But now, revised tow rating practices have been put into place, called SAE J2807. And with these new methods of testing, GM can now officially rate both the Silverado and its GMC Sierra twin as being able to tow up to 12,000 pounds.
Of course, not all Silverado and Sierra models are capable of this feat. In fact, because of SAE J2807, most of the truck models have actually had decreases in tow ratings from the 2014 to 2015 model year. For example, a 2014 Silverado Crew Cab with the 5.3-liter V8, 5.7-foot box and 3.73 rear axle was rated at 11,200 pounds in 2014, but has since been reduced to 10,800 in 2015. Same goes for the Sierra.
But for 2015, both the Silverado and Sierra can be had with a more powerful 6.2-liter V8, as well as a Max Trailering Package that includes a 9.76-inch rear axle, heavy-duty rear springs, revised shock tuning, improved cooling and a new trailer brake controller. There are also four- and seven-pin, bumper-mounted connectors, a trailer hitch (duh), and a G80 locking rear differential. This configuration, with either model, is the only way you can actually tow 12,000 pounds.

GM will no longer remove parts from trucks to calculate curb weights

Following last week's mild uproar after it was discovered that Ford and General Motors were removing some optional parts from their pickups to lower the curb weight and consequently increase the maximum payload, GM has come out and committed to a base curb weight for its upcoming Chevrolet Colorado and GMC Canyon compact trucks (although it has yet to publish them) and its current Silverado and Sierra. The company will do the same for its heavy duty offerings, although those numbers have not been finalized yet.
"This will make our curb weight and payload specs more consistent with those of most other truck makers, making it easier for customers to compare vehicles," GM spokesman Tom Wilkinson told Autoblog in an emailed statement.
As GM notes - and as every manufacturer has noted since this story broke - customers still shouldn't take max payload ratings as gospel. Instead, they should refer to their truck's Tire and Load Label, like the one shown at the inset, which will offer detailed information on max payload, specific to their truck.

Hummer EV range listed at 334 miles in MyChevrolet app

Forums of late have been cracking for interesting news, the Hummer Chat forum next in line to keep us intrigued. When member BahamaTodd updated his MyChevrolet app to version 5.7.0, he clicked through to the Energy Assist page and found three GM electric vehicles listed, plus their estimated range figures on a 100% charge. One was the 2022 Chevrolet Bolt, rated for 259 miles, the second was the 2022 Chevy Bolt EUV, rated for 247 miles. The third was an unexpected entry, being the 2022 GMC Hummer EV pickup, listed as able to go 334 miles on a full charge. When BahamaTodd clicked on the Hummer, a map appeared with a dotted line outlining the entire geographical area available to him based on his current location. The figures for both Bolts are the official EPA estimates. The mileage figure for the Hummer is a mystery, as is why it's popped up here in the MyChevrolet app instead of the MyGMC app. The EPA hasn't certified the 2022 Hummer yet, so that's not the source. On the other hand, a little more than a week ago, GM said the Hummer EV could go 350 miles or more based on the automaker's estimates. We assumed GM was referring to the Hummer Edition 1, the sold-out launch model which will be the only trim produced for the 2022 model year, fitted with three electric motors making a combined 1,000 horsepower. The first and safest assumption is that the app data is placeholder information, not intended to be spread on the Internet and dissected. If it does apply to a Hummer EV, it could denote a specific trim or options. The Edition 1 will be available with street tires. It's perfectly reasonable to believe the chunky, 35-inch knobblies that shown in all the press materials could eat up 16 miles or so of range, about a 4.8% loss. Or GM's range estimate could have been meant for one of the future Hummer EV variants, like the slightly less-powerful tri-motor EV3X with 800 hp, the 625-hp dual-motor EV2X, and the base, 625-hp dual-motor EV2. With pre-production of the Edition 1 slated to begin at GM's Factory Zero any day now, answers shouldn't be long in coming.  Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.