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GM 6.2L EcoTec V8 rated at 21 mpg by the EPA

General Motors is already laying claim to best-in-class power for its new 6.2-liter V8 that will be offered in the 2014 Chevy Silverado and GMC Sierra this fall, and now it has released fuel economy numbers for the big engine. Available as an option on the Silverado LTZ and High Country (shown above) models as well as the the Sierra SLT and Denali trims, the 6.2L EcoTec3 V8 will return 15 miles per gallon in the city and 21 mpg on the highway on rear-wheel-drive trucks; these numbers drop by one mpg each on four-wheel-drive models.
These estimates are in addition to the engine's 420 horsepower, 460 pound-feet of torque and max trailering capacity of 12,000 pounds, and considering all that power it's not terribly far away from the fuel economy of GM's equally new 4.3-liter V6 and its rating of 18 mpg city and 24 mpg highway. This announcement comes just days after a report indicated that GM is unable to keep up with the demand of the 5.3-liter V8 in the fullsize Chevy and GMC trucks due to supplier issues. GM's official press release for the 6.2-liter V8's fuel economy is posted below.

2022 Hummer EV Edition 1 pickups ready to go to customers

It's official: Two years after GM announced the electric GMC Hummer pickup, the first couple dozen units have left the line at the GM Factory Zero Detroit-Hamtramck Assembly Center, according to GM president Mark Reuss. In an interview with CNBC to celebrate the milestone, Reuss said 17 Hummer EVs are ready for delivery to customers. This makes the Hummer the first of GM's new Ultium-based EVs to leave the factory, and the second electric pickup on the market after the Rivian R1T. The first 1,200 Hummer EVs made will be Edition 1 models, all of which are Interstellar White outside with Lunar Horizon interiors and bronze badging. Each of the $112,595 pickups is powered by three Ultium motors producing a GM-estimated 1,000 horsepower and 11,500 pound-feet of torque, loaded with features like height-adjusting adaptive suspension, skid rails and rock sliders, 35-inch tires, the diagonal-driving CrabWalk, the launch control system Watts to Freedom that unlocks a three-second sprint to 60 miles per hour, and Super Cruise. Range is a GM-estimated 329 miles when the 200-kWh battery is fully charged. As these filter out to eager owners, GM is prepping the next four phases of the Hummer rollout. About a year from now, in autumn of 2022, Factory Zero will begin production of the first widely available Hummer, the EV3X pickup that starts at $99,995 before destination. Three Ultium motors will provide an estimated 800 horsepower and 9,500 pound-feet of torque to a range estimated beyond 300 miles. Spring of 2023 is expected to deliver the Hummer EV2X pickup at an MSRP of $89,995, utilizing two motors producing a total 625 hp and 7,400 lb-ft over a range also estimated to go beyond 300 miles. Around the same time, the first units of the $105,595 Hummer SUV Edition 1 are planned to head down lines at Factory Zero. Finally, in the spring of 2024, the entry-level $79,995 Hummer EV2 pickup and its two-motor powertrain should arrive, making the same output as the EV2X, but only good for a range of around 250 miles. That won't be all we see from Factory Zero, either. GM invested $2.2 billion in the Detroit-Hamtramck plant that once built bread-and-butter GM fare like the Chevrolet Impala, Buick LaCrosse, and Oldsmobile Toronado in order to turn the facility into its first EV base of manufacturing operations for Ultium products. The battery-electric Chevrolet Silverado and GMC Sierra pickups will be built there, as will the Cruise Origin robotaxi.

GM recalling 54k Cadillac SRX, HD pickup models

There are more recalls to report General Motors, but these latest actions pertain to newer examples of the Cadillac SRX, Chevrolet Silverado HD and GMC Sierra HD. With so much scrutiny on the company's recall strategy, GM is under increasing pressure to call in defective models more quickly, and it appears to be doing so here.
Here in the US, the automaker is recalling 50,571 Cadillac SRX crossovers from the 2013 model year fitted with the 3.6-liter V6 because the transmission control module programming can cause a three- or four-second lag in acceleration at low speeds. The explanation filed with the National Highway Traffic Safety Administration states, "if the following sequence occurs within two seconds: during an upshift from first to second gear (8-10 mph), the driver then brakes the vehicle to less than 5 mph, and then accelerates again," the delay can occur. According to Automotive News, the recall effects 56,400 vehicles worldwide, and the company is not aware of any crashes caused by the problem. The fix consists of a transmission control module (TCM) reflash.
In a separate recall, GM is repairing 51 Chevrolet Silverado HD and GMC Sierra HD pickups from the 2015 model year in the US. In vehicles with diesel engines and dual fuel tanks, the nuts that connect the fuel pipe to each side of the transfer pump between the tanks may be improperly torqued, which could cause a fuel leak. Obviously, this could be a fire hazard. The remedy is simply tightening the hardware. According to GM spokesperson Alan Adler, there have been no fires actually caused by the potential leak. "Only 21 of the trucks are in customer possession and they can be fixed anytime because there are no parts involved. The others are being fixed at dealerships," Adler said in an email to Autoblog.