2015 Gmc Acadia on 2040-cars

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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.

GM faces possible class action lawsuit over 8-speed transmission

General Motors has been hit with a class-action lawsuit from owners who allege the eight-speed automatic transmission found in several rear-wheel-drive Chevrolet, Cadillac and GMC models between the 2015 and 2019 model years has a defect that causes the vehicles to hesitate and jerk when accelerating or slowing down. The lawsuit was posted to ClassAction.org and spotted by GM Authority. Problems with GM's Hydra-Matic 8L90 and 8L45 transmissions have been well-documented on Internet forums and via complaints filed with the National Highway Traffic Safety Administration, with many reporting damage to their vehicles. The lawsuit was first filed in December in U.S. District Court for the Southern District of Florida but appears to have been transferred recently to New York. Autoblog sought comment from Theodore Leopold, the lead attorney for the plaintiffs. "These transmissions have a common defect," the complaint reads. "Drivers attempting to accelerate or decelerate their cars feel a hesitation, followed by a significant shake, shudder, jerk, clunk, or 'hard shift' when the vehicle's automatic transmission changes gears." The problem also occurs when the vehicles accelerate in a single gear, without shifting, the plaintiffs allege. "Drivers have reported that the shift is sometimes so violent, they feel as though they have been hit by another vehicle." The problem is believed to center on the transmission, torque converter or both. The complaint says it causes undue friction, causing hydraulic systems and gears to function improperly and sometimes leaves metal shavings throughout the transmission, leading to costly repairs and replacement of parts or the entire transmission. It says GM has known about the problems since shortly after it introduced the transmissions, and has issued 13 technical service bulletins, none of which have resolved the problem. GM declined to comment on the lawsuit. The plaintiffs say GM should have warned consumers about the issues and covered repairs under each vehicle's three-year/36,000-mile bumper-to-bumper warranty. They're seeking statewide classes in at least six states: California, Florida, Illinois, New York, Oklahoma and Texas.

2020 GMC Sierra gets small price bumps, package discounts and tweaks

A couple of months ago we covered a brace of changes GMC made to the 2020 Sierra 1500. Those included availability of the 2.7-liter turbocharged four-cylinder with 310 horsepower and 348 pound-feet of torque, the 5.3-liter V8 getting the 10-speed automatic transmission, the CarbonPro Editions debuting for AT4 and Denali trims, and a new bed view camera. But GMC has made a few more smaller changes throughout, as GM Authority found, part of a detailed overhaul among GM's pickup lines that's already changed trim names, trim volume, and prices on the Chevrolet Canyon and GMC Colorado. We'll start with MSRP adjustments on the 2020 Sierra: 4WD drivetrains in SLT, and the AT4, and Denali trims that only come in 4WD, see a price increase of $200. There are also more MSRPs to consider this year, with a handful of new Elevation models filling price gaps.  The only changes inside are AT4-logoed all-weather floor liners that come standard for that trim, and adaptive cruise control joining the Driver Alert Package II available on the SLT, AT4, and Denali trims. Speaking of packages, the Value Packages represent truth in advertising. The new base-model Sierra Sierra Value Package costs $860 to combine the Convenience Package and Trailering Package. Those two cost $1,640 when ordered separately. Sticking with the base trim, the Chrome Exterior Package disappears because the chrome bumpers it added are now the standard finish. Black bumpers front and rear can be ordered at no charge, and the 17-inch Bright Silver painted aluminum wheels can be ordered alone. One trim up, the SLE Value Package lumps Convenience and Trailering, too, but it only costs $380, which is $15 less than the Trailering Package by itself. The Elevation Value Package gets cut by $1,330 to $585. On the AT4 trim, GMC dropped the price of the CarbonPro Package from $1,060 to $560, and the Premium Package comes down by $500 as well. The same $500 discount applies to the SLT Premium Package. The new 2.7-liter turbocharged four-cylinder is the optional engine on the base, SLE, and Elevation trims, saving $235 on the first trim and $395 on the other two compared to ordering the standard 4.3-liter EcoTec V6. Smokey Quartz Metallic exterior paint is expected to disappear come Q2. Two new wheels enter the range in the upper reaches, one being a 20-inch Carbon Grey painted rim available on the AT4 CarbonPro Edition.