See All 4 Photos Unlike most eight-speeds that use two speed sensors, the 8L90 uses three speed sensors to know what's going on inside. The new external transmission control module (TCM ...

The gearbox, according to Edmunds, is codenamed 8L90, and considering that GM doesn't have another eight-speed gearbox to slot into the Corvette, we're assuming this is an entirely new ...

Per Reuters, the issue concerns the 8L45 and 8L90 eight-speed automatic gearboxes sold from model years 2015 to 2019, ...

The decision, issued by the 6th U.S. Circuit Court of Appeals, paves the way for a group of drivers to collectively sue GM over problems associated with its 8L45 and 8L90 eight-speed automatic ...