June 27 (Reuters) - General Motors ( GM ) persuaded a

federal appeals court on Friday to decertify a class action

seeking to hold the automaker liable for knowingly selling about

800,000 cars, trucks and SUVs with faulty transmissions.

In a 9-7 vote, the 6th U.S. Circuit Court of Appeals in

Cincinnati found too many differences among vehicle owners to

justify having one judge oversee the litigation, including 26

statewide subclasses and 59 state law claims.

Class actions can result in greater recoveries at lower cost

than if plaintiffs were forced to sue individually.

Neither GM nor lawyers for the vehicle owners immediately

responded to requests for comment.

The case covered Chevrolet and GMC vehicles equipped with

8L45 or 8L90 eight-speed automatic transmissions, and sold in

the 2015 through 2019 model years.

Drivers said the vehicles shuddered and shook in higher

gears, and hesitated and lurched in lower gears, even after

repair attempts.

The vehicles included the Cadillac CTS, CT6 and Escalade;

Chevrolet Camaro, Colorado, Corvette and Silverado; and GMC

Canyon, Sierra and Yukon, among others.

The decision reversed an August 2024 ruling by Circuit Judge

Karen Nelson Moore for a three-judge panel.

Moore dissented on Friday, accusing the new majority of

trying to erect "insurmountable barriers to certification for

plaintiffs who file class-action complaints against national

manufacturers."

Republican presidents appointed the nine judges in Friday's

majority, while Democratic presidents appointed the seven

dissenting judges.

The appeals court sent the litigation back to U.S. District

Judge David Lawson in Detroit for further review, which could

lead to certification of smaller subclasses.

The case is Speerly et al v. General Motors LLC, 6th U.S.

Circuit Court of Appeals, No. 23-1940.