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2021 GMC Canyon trims overhauled, SL and SLT disappear

Until this year, the GMC Canyon has offered six trims in two drivetrains: SL, a base model simply called Canyon, SLE, All Terrain, SLT, and Denali, with all but the SL available in either 2WD or 4WD. GM Authority credits "dealer sources" for news that the 2021 Canyon has had its trim steps overhauled. According to the chart in the report, the SL and SLT are no more, the base Canyon gets replaced by a trim called Elevation Standard, and SLE turns into Elevation. We already know that All Terrain has given way to AT4, while Denali remains in the top spot. Trim content doesn't change with the names, but there's no equivalent for the SLT trim in terms of spec. The GMC site lists the 2020 SLE and SLT on the same page, and a shopper must burrow into the spec comparison page to figure out the differences. The SLT only comes with the 3.6-liter V6 and eight-speed transmission, and makes features like remote start, climate control, heated mirrors, heated seats, hitch guidance, and a spare tire standard equipment. It also chromes the exterior door handles, and offers a Cocoa/Dune leather interior that can't be had on the SLE. It's possible the SLT's $4,700 premium over the SLE led more buyers to start with the SLE and add the engine and options they wanted.   We have a number of questions that we'll need to wait for GMC's official announcement to answer. The 2020 Canyon offers an Elevation Edition package for $650 that adds a black grille with body-colored surround, and 18-inch Satin Graphite wheels in all-terrain rubber. There's also a California Elevation Special Edition for $1,195 with all-weather floor liners, assist steps, and mud flaps. They could be optioned on the SLE but not the SLT. With the addition of two Elevation trims, we'll find out if the packages get renamed or go away. Separately, CarBuzz spotted a 2021 GM Fleet Order Guide that mentions a leveling kit option, LPO Code SQS, for the Canyon and the Chevrolet Colorado. We noted the inclusion of a leveling kit in the coming Canyon AT4 Off-Road Performance Package. According to the order guide, the option can be ordered only for the Canyon AT4 trim, but it's not clear if that's an a la carte choice or if buyers must order the Off-Road Performance Package. On the Chevy, the rake-removal equipment can be had with the Colorado 4x2 Z71 or the 4x4 Work Truck, LT, and Z71. Related Video:

How GM engineers are using diaper 'snow' to keep you warm

Testing how snow affects General Motors' vehicles isn't really a problem right now for the company's engineers, but in the dog days of summer the process isn't exactly easy. The only real option is for them to book time at the automaker's climatic wind tunnel. However, a flash of brilliance from an engineer allows snow to be simulated regardless of the temperature outside, and the discovery is all because of his daughter's wet diaper. The realization came to GM Thermal Systems engineer Nicholas Jahn while he was swimming with his daughter and noticed how her diaper ballooned in size in the water. He found out the substance that makes this possible is called sodium polyacrylate. When the material gets wet it grows and forms fluffy flakes that are a close imitation of snow. Best of all, the stuff can be prepared easily any time of the year, and it's reusable. The engineering team uses the material to test the effectiveness of the heating systems of GM's vehicles. They spread the sodium polyacrylate over the inlets at the base of the windshield to obstruct the airflow and then crank the heater. After some time, they can see how much is being sucked into the system and design more efficient systems in the future. See how the process works in the video above and read about the diaper discovery in GM's press release below. Diapers Change Chevy Cruze Winter Warm-up Time GM validation engineer uses diaper material "snow" to reduce frigid drives 2015-01-06 DETROIT – An item commonly found on an infant's changing table is helping General Motors' engineers simulate snow year round, ensuring heating systems in cars like the 2015 Chevrolet Cruze can quickly and efficiently warm its interior. Packed snow can prevent air from entering the inlet panel at the bottom of the windshield, obstructing the flow of air into the heating system and reducing the amount of air it can push out. This can lead to less efficient warming of the car's interior and windshield defrosting. "The last thing anyone wants to do when it's freezing cold out is scrape their windshield," said Nicholas Jahn, GM Vehicle Thermal Systems engineer. "The testing we perform on the Chevrolet Cruze with the diaper material allows us to maximize the car's heating capabilities." Ironically, Jahn stumbled upon his diaper-based testing method in the middle of summer. During a swim with his daughter, he noticed her diaper multiplied in size when it came into contact with water.

2021 Chevy Silverado, GMC Sierra fuel economy to go down due to global chip shortage

Production of the 2021 Chevy Silverado and 2021 GMC Sierra is continuing, but the global semiconductor chip shortage is resulting in a mid-year change. Or rather, an omission.  Basically, the availability of cylinder deactivation for the 5.3-liter V8 will be significantly reduced, resulting in a reduction of 1 mpg combined for affected models. This applies whether that engine has the six- or eight-speed automatic, as well as to both the regular Active Fuel Management and the more advanced Dynamic Fuel Management cylinder deactivation systems. DFM does remain with the pairing of 5.3-liter V8 and 10-speed automatic that comes standard on the LT Trail Boss and High Country. "Due to the micro controller shortage, the components that control AFM/DFM in the engine control module (ECM) have been removed," GM spokesperson Michelle Malcho told Autoblog. She also indicated that the engines will still have the AFM/DFM hardware in place, but that GM will not allow activation of the systems in the future with an ECM change.  Malcho also confirmed to Autoblog that the Silverado and Sierra's other engines will continue to have AFM and DFM, including the 2.7-liter turbo inline-four, 4.3-liter V6 and 6.2-liter V8. In an earlier statement to Reuters, she declined to say the volume of vehicles affected. "By taking this measure, we are better able to meet the strong customer and dealer demand for our full-size trucks as the industry continues to rebound and strengthen," Malcho wrote Reuters in an email. The change runs through the 2021 model year, she said. Malcho told Reuters it would not have a major impact on the Detroit automaker's U.S. corporate average fuel economy (CAFE) numbers. "We routinely monitor our fleet for compliance in the U.S. and Canada, and we balance our portfolio in a way that enables us to manage unforeseeable circumstances like this without compromising our overall (greenhouse gas) and fuel economy compliance," she said. GM's fleetwide fuel economy in the 2018 model year was 22.5 miles per gallon and was projected to rise to 22.8 mpg for 2019, according to a report by the Environmental Protection Agency. To meet federal CAFE requirements, automakers like GM often use credits from either earlier years where they faced less stringent rules and performed better than the requirements or buy credits from other automakers. GM said last month the chip shortage could shave up to $2 billion from this year's earnings.