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GM removes start/stop from full-size trucks and SUVs with V8 engines

GM is removing start/stop technology from a number of its popular full-size SUVs due to the ongoing chip shortage. This follows the removal of cylinder deactivation technology from some of its trucks, which was also due to the chip shortage. GM Authority first reported the news, but we’ve just confirmed everything with a GM spokesperson.  The following 2021 model year vehicles will be affected: Chevy Tahoe, Chevy Suburban, GMC Yukon, Cadillac Escalade, Chevrolet Silverado 1500 and GMC Sierra 1500. Only versions of those vehicles built with the 5.3-liter V8 or 6.2-liter V8 and mated to the 10-speed automatic will have the tech removed from them. Only vehicles manufactured on or after June 7 will be affected. “By taking this measure, it will enable us to continue production of our high-demand full-size SUV and pickups as the industry continues to rebound and strengthen,” GM said in a statement. Those who ultimately buy one of these vehicles without start/stop technology will receive a $50 discount off MSRP for their troubles. Losing this fuel-saving tech could be a big negative for some, but we know many folks turn it off anyway. Not having to press the button to deactivate start/stop every time could actually be a positive if youÂ’re part of the camp who does that already. 2021 Cadillac Escalade Sport Platinum View 27 Photos On the downside, GM says “most of the affected vehicles will experience a minor reduction in fuel economy.” We donÂ’t have revised window stickers in hand to know how each model will be affected, but any 1 mpg reduction will be rather impactful for vehicles rated as low as these trucks already are. Any reduction will be seen in the city mpg rating, so take the kind of driving youÂ’re going to be doing into account before purchasing. When it comes to greenhouse gas compliance rules, GM says it doesnÂ’t foresee this impacting the companyÂ’s average fleet score. It also intends to begin adding start/stop back to these models as soon as possible, but there will be no retrofit effort made to fit the tech to vehicles already built without it. “Our supply chain organization continues to make strides working with our supply base to mitigate the near-term impacts of the semiconductor situation,” GMÂ’s statement reads. “GM continues to leverage every available semiconductor to build and ship our most popular and in-demand products, including our highly profitable full-size trucks and SUVs for our customers.

Weekly Recap: Ford guns for 2016 Le Mans glory with new GT

On the eve of the 24 Hours of Le Mans, Ford confirmed it will return to the French endurance race in 2016 and campaign the new GT racecar 50 years after three GT40s swept the podium at the Circuit de la Sarthe. The factory will back a two-team, four-car effort that will compete in the World Endurance Championship and the Tudor United SportsCar Championship running cars operated by Chip Ganassi Racing with Felix Sabates. The GT racecar will make its track debut in January at the Rolex 24 at Daytona, and the driver lineup will be announced later. "But rest assured, there's quite a line forming out the door," Ganassi said at the announcement. The GT is the modern successor to the iconic GT40, which won Le Mans four straight years from 1966-1969. The racecar is a rolling testbed of Ford's latest technologies, including a powerful twin-turbo EcoBoost V6. The car also makes extensive use of carbon-fiber pieces and advanced aerodynamics. Ford tapped Multimatic Motorsports of Canada and Roush Yates Engines to aid in the development of the GT racer. The road-going version, which was revealed in January at the Detroit Auto Show, is also set to launch next year. It caps Ford's growing performance lineup, and the company has ambitious plans to launch more than 12 new sporty models by 2020, including hot metal like the Focus RS, F-150 Raptor, and Shelby GT350R. The GT embodies Ford's best tech, but news of its return to Le Mans immediately conjured images of the company's fierce rivalry in the 1960s with Ferrari and intense competition with Porsche. "When the GT40 competed at Le Mans in the 1960s, Henry Ford II sought to prove Ford could beat endurance racing's most legendary manufacturers," Ford executive chairman Bill Ford said in a statement. "We are still extremely proud of having won this iconic race four times in a row, and that same spirit that drove the innovation behind the first Ford GT still drives us today." Ford is going back to Le Mans. Somewhere, Hank the Deuce must be smiling. OTHER NEWS & NOTES 2016 BMW 7 Series arrives in the fall BMW revealed the sixth generation of its flagship 7 Series this week, which will start at $81,300 when it launches in the United States this fall. BMW is billing it as the roomiest 7 Series ever, and it measures 206.6 inches in length.

GM applies for LT5, LTX trademarks... are new small block variants coming?

Recently discovered General Motors trademark applications for LT4, LT5, LT88 and LTX have observers wondering what kind of high-performance offerings could be on their way. A new LT4 would mark a return of the engine designation first used on the Corvette Grand Sport, SLP Pontiac Firehawk and SLP Chevrolet Camaro SS from 1996 and 1997. Supposition at Corvette Forum - which provided advance intel on the C7 like these leaked images - believes a new LT4 could go into the high-performance trim of the next-gen, 2015 Camaro that would be more powerful than the 580-horsepower Camaro ZL1.
Seeing an LT5 again would also be déjà vu - in its former life it was a 5.7-liter V8 for the C4 Corvette ZR-1 from 1990-1994 designed by Lotus, producing from 370 hp to 405 hp. A mix of rumor and hope is that the new LT5 will be a supercharged evolution of the 6.2-liter LT1 (pictured) placed in the new C7 Corvette, and that it will go into the C7 version of the ZR1 pumping out something like 700 hp.
The LTX trademark is, as with that last letter, a complete mystery. If the "X" isn't a generic way to denote the whole LT family, it's wondered if it LTX could refer to a crate motor offering like the LSX.