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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.

2021 Cadillac Escalade, GMC Yukon, Chevy Suburban/Tahoe recalled for stall risk

General Motors is recalling just shy of 15,000 2021 Cadillac Escalade & Escalade ESVs, Chevrolet Suburbans and Tahoes, GMC Yukons and Yukon XLs that were shipped with fuel pumps that were built with a batch of what may be faulty electronic control modules. A pump with a bad module can result in intermittent function, resulting in drivability issues and potential stalls. No serious incidents or injuries have been associated with the issue.  GM says it discovered the issue after analyzing early recall data for the 2021 model SUVs and discovering an unusually high failure rate for fuel pumps manufactured by a single supplier – Vitesco. The company was able to identify the batch and initiate a recall campaign targeting just those vehicles.  "After reviewing the field data, GM determined there were 617 potentially relevant complaints, which were received between April 15, 2020 and August 24, 2021," the company's recall report said. "229 of these complaints reported a stall while standing or moving. No accidents or injuries associated with this condition were found." Any SUVs built with pumps from that batch but not yet sold are being held at dealers for replacement parts. It may take some time for GM to source replacements due to the ongoing electronic parts shortages.  "We are working with the supplier to obtain the required parts as quickly as possible," GM said in its notice to dealers. "When sufficient quantity of parts are available, the recall bulletin will be released and dealers can begin repairing vehicles."

Surprise! GM putting aluminum in next-gen pickups

Last month, General Motors launched a series of ads touting the benefits of steel over aluminum – specifically, with regard to the Chevy Silverado versus the Ford F-150. (Kind of. We're not sure what a grizzly bear has to do with anything.) We took issue with the ads, with editor in chief Mike Austin saying they "reek of insecurity, and distract from the Silverado's strengths that could be used for positive advertising." But what bothers us more, is that yet another report surfaced claiming anti-aluminum GM will indeed use the weight-saving material in its next-generation fullsize trucks. On Tuesday, GM announced a $877-million investment for its truck plant in Flint, MI. But Reuters says that huge overhaul is because the trucks will use "substantially different equipment than the tools GM uses today." The report specifically states, "People familiar with the company's plans say GM's next-generation pickups and SUVs will make use of various materials, including aluminum and lightweight steel, to shed weight and gain fuel efficiency to meet tougher federal standards." The Silverado already uses a few aluminum components in the engine and hood, and if more widespread use will help GM build its best fullsize trucks ever, then that's great. Honestly, we have no reason to doubt that aluminum will be used in the next Silverado and GMC Sierra. We just hope GM remembers that nothing is ever truly deleted from the bowels of the Internet when it launches the subsequent "look how great aluminum is!" campaign. Related Video: News Source: Reuters Green Plants/Manufacturing Chevrolet GM GMC Truck aluminum steel