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All of these will soon be replaced by all-new models for the 2021 model year, and here’s to hoping that GM doesn’t continue offering the 8-speed on lower-end trims. The entirety of the full-size SUV lineup, including Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon and Yukon XL, as well as the Cadillac Escalade and Escalade ESV.The 20 Chevrolet Silverado 1500 as well as the 20 GMC Sierra 1500 equipped with the 2.7L turbocharged four-cylinder 元B engine and 5.3L V8 L84 engine, with other engines being paired to either the 6-speed or the new 10-speed.Of course, that would have required some doing, as the GM product lines that would qualify for the change-over today include: Taking all that into consideration, The General seems to have grossly mishandled the entire situation with the 8-speed transmission. What it should have done is replaced the GM 8-speed transmission outright with its new 10-speed automatic (jointly developed with Ford) in every vehicle application. Following the lawsuit, more owners have spoken out over the issue, and we’ve even heard from our own readers about it on our forums. For its part, GM has filed 13 technical service bulletins concerning the unit, none of which remedied the issue. The plaintiffs assert the GM 8-speed transmission is defective, creating violent shakes, jerks, and a “hard shift” when selecting a gear. In fact, GM was recently slapped with a class action lawsuit over the 8-speed gearbox. Long story short, GM needs to do away with the 8-speed and replace it with the much-improved 10-speed automatic… and quick. Also known as the 8L90 and 8L45, the 8-speed pairs to rear-wheel-drive architectures in GM’s bread-and-butter products, including pickup trucks, SUVs, sports cars and luxury cars, and to say that it has a few issues would be a major understatement. Owners have complained far and wide about the 8-speed’s strange tendencies, such as waiting too long to upshift, downshifting at odd times and lurching when coasting or coming to a stop light. It’s no secret that the GM 8-speed transmission is not great.