All six years of the seventh generation Corvette are among the cars included in a class action lawsuit filed this week against General Motors, alleging that a lifter recall should be ordered for GM vehicles with 5.3-liter, 6.0-liter, or 6.2-liter V8 engines.
The suit was filed by nine plaintiffs in the U.S. District Court for the Eastern District of Michigan: Harrison, et al., v. General Motors LLC.
At issue are the valve train systems, active fuel management lifters, and dynamic fuel management lifters, said in the suit to be defective in certain Buick, Cadillac, Chevrolet, and GMC vehicles.
The plaintiffs want to see a lifter recall issued for the following vehicles:
2014-present Cadillac Escalade
2016-2019 Cadillac CTS-V
2014-present Chevrolet Silverado
2014-present Chevrolet Silverado 1500
2014-2019 Chevrolet Corvette
2014-present Chevrolet Suburban
2014-present Chevrolet Tahoe
2016-present Chevrolet Camaro
2014-present Chevrolet Camaro SS
2014-2016 Chevrolet Corvette
2014 to present GMC Sierra
2014 to present GMC Sierra 1500
2014-present GMC Yukon
2014-present Yukon XL
The suit alleges the defective nature of the valve train systems – which are designed to control some of the 16 lifters periodically to decrease fuel consumption by keeping some of the valves from opening and allowing fuel to enter when only partial power is required, such as during highway cruising.
According to the suit, these systems consist of software run by the engine control module, specially designed and manufactured lifters, and other valve train components like the valve lifter oil manifold.
The suit alleges that these systems malfunction and prematurely fail for several reasons, including non-conforming design specifications, failure to account for the expansion and contraction rates of the lifters and the engine block, and failure to consider the increased pressure on the AFM lifters.
Replacement parts provided by GM have been shown to be equally defective and continue to fail, causing a ticking noise from the engine, the plaintiffs allege.
While a lifter recall hasn’t been issued by GM, the company has agreed to cover repairs through extended warranties known as Component Coverage, if vehicle owners have had two or more repairs at dealerships for the valve train and lifter problems. The suit argues, however, that the extended coverage is only provided if the owner has already repaired the damage twice.
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