2014 Gmc Sierra 1500 Sle on 2040-cars

Auto blog

Leak reveals GM's 2017 heavy duty diesel trucks to get 910 lb-ft of torque [UPDATE]

UPDATE: Chevrolet officially announced specs for the 2017 Silverado HD and the rumors were true. The truck's new Duramax 6.6-liter turbo-diesel V8 puts out 445 horsepower and 910 pound-feet of torque. Chevrolet says the new motor produces 19 percent more torque and 12 percent more horsepower, while producing 35 percent fewer emissions. Overall, the new engine is a big improvement over the current motor, which generates 397 horsepower and 765 pound-feet of torque. According to Truck Trend, GM's newest heavy duty pickup trucks will pick up quite a bit more power and torque. The publication spotted a recent GM Powertrain ordering catalog that had the engine specs for the 2017 model year and managed to get some screenshots before the catalog was taken down, and they can be viewed here. The screenshots revealed that the 6.6-liter turbodiesel V8 powering the Silverado and Sierra heavy duty models will boast 445 horsepower and 910 lb-ft of torque. This is a substantial gain over the current models' 397 horsepower and 765 lb-ft of torque, and as Truck Trend points out, it exceeds the Ford Super Duty line's horsepower output of 440, but comes short of the 925 lb-ft rating. Truck Trend credits part of this output gain to the new intake system GM will introduce on the 2017 heavy duties. The intake gets 60 percent of its air from a scoop on the hood, with the other 40 percent coming from behind one of the front fenders. GM doesn't reveal horsepower figures in the press release about the scoop, but it does say the cooler air helps with maintaining the engine's output, and that the scoop does produce a ram-air affect, providing more air at speed. As we know, more air plus more fuel equals more power, but there's likely more to the power increase in this engine than only the intake. Related Video: News Source: Truck Trend via MSN Chevrolet GM GMC Truck Diesel Vehicles

GM under fire from safety advocates over braking problem caused by recall fix

Safety experts are lambasting General Motors over what they say is the automaker’s slow notification of owners of certain 2019 sedans and trucks that a recall fix could cause power braking to fail and increase the risk of a crash, the Detroit Free Press reports.  GMÂ’s original recall in December targeted about 550,000 Cadillac CT6 sedans and Chevrolet Silverado 1500 and GMC Sierra 1500 pickups, all from the 2019 model year, over potentially defective electronic stability control and antilock brakes. In that case, GM said the errors would not show up as a diagnostic warning on the instrument cluster. But after GM had done recall work on 162,000 vehicles, about 1,700 owner have complained that their power brakes didnÂ’t work after they had the recall done and then used the OnStar app to start their vehicle. GM then issued a supplemental fix for customers whoÂ’d already had their vehicles serviced. In this case, a diagnostic warning should illuminate saying either “Service Brake Assist” or “Service ECS,” which GM says is a signal that a customer should not drive the vehicle and instead call their dealer, which will tow the vehicle and have it repaired. Safety advocates say the automaker hasnÂ’t gone far enough to protect customers. “The fact that you could potentially start a vehicle and not have brakes is a pretty risky proposition,” Sean Kane, president of the Safety Research and Strategies, which works on auto issues for plaintiffs and governmental organizations, told the Freep. “The fact that they wouldnÂ’t notify owners (sooner) is pretty stunning.” GM told the Freep it was required to notify the National Highway Traffic Safety Administration and file paperwork before it notified customers about the original recall, which was made Dec. 12. It then had to investigate and resolve the problem created by its original recall fix before alerting customers. GMÂ’s call center and dealers are contacting the remaining 900 customers who havenÂ’t yet had the update made to the original recall repair. GM also hired a vendor to send recall letters to the 550,000 customers affected by the original recall notifying them about the update. There are no known injuries or deaths related to the problem. Read the Freep story here.

2025 GMC Terrain fully revealed in spy photos

A couple of months ago, GMC teased the 2025 Terrain compact SUV and said there'd be a reveal sometime this year. We're still waiting on the official reveal, but in the meantime, a spy photographer caught the GMC out and about without any coverings. So this is an early look at the Terrain, both in AT4 and Denali trim levels. Being a mechanical twin to the recently revised 2025 Chevy Equinox, there are some similarities in the roofline, the prominent C-pillar and the window lines, but beyond that the Terrain continues to be solidly distinguished from the Chevy. The front has GMC's more vertical headlights and tall grille, with the latter getting a unique black surround. The fender flares are given more prominence, particularly from the signature amber marker lights over each wheel, and there are subtle taillight and bumper changes. There are design differences between the AT4 and Denali, too. The AT4 has black contrasting flares and bumpers, whereas the Denali has body color pieces. And the AT4 has tow hooks and smaller wheels with all-terrain tires. The Terrain really differentiates itself from the Equinox inside, though. It trades the more organic, trapezoidal Chevy design for the crisp, rectangular looks of larger GMC models. Complementing the look is the touchscreen in portrait layout compared to the Chevy's landscape unit. We don't know for sure whether this screen will be standard across the lineup (the photo is of a Denali), but considering GM's willingness to include big screens in all its models, we wouldn't be surprised if this is included even on base Terrains.  Underpinning the Terrain will be the same new platform as Equinox, and almost certainly the same turbocharged 1.5-liter four-cylinder with 175 horsepower. Front-wheel drive and all-wheel drive should be on offer, with the former getting a CVT and the latter an eight-speed automatic. The AT4 model clearly has reworked bumpers for better approach and departure angle than the standard Terrain, and probably has some additional light protection. We'll be curious if GMC offers a twin-clutch rear differential for some locking and torque-vectoring functionality to help it stand out and potentially compete with the likes of high-end Bronco Sport. But that's more in the realm of speculation. We should have confirmation of many of these details and much more soon when GMC officially reveals the Terrain itself.