NEW! General Motors is asking a federal court to throw out one of the many lawsuits tied to its troubled 6.2-liter L87 V8, arguing that owners have already received the solution they're seeking through a recall campaign launched earlier this year. The strife swirls around approximately 600,000 GM trucks and SUVs equipped with GM's 6.2-liter EcoTec3 V8, including the Chevrolet Silverado 1500, Tahoe, and Suburban, GMC Sierra 1500 and Yukon, and the Cadillac Escalade.