Both longtime GM commercial van models, the Chevy Express and GMC Savana, are currently being investigated by the NHTSA in response to five alleged transmission failures. Some evidence is pointing to ...

The General Motors 8L family of transmissions has been in service since 2014, gradually replacing older 6L six-speed units across much of the company's lineup. The bigger 8L90 was the first GM 8-speed ...

We’ve covered the problems of the eight-speed GM transmission on numerous occasions. In fact, we cover a class action lawsuit brought against GM back in April, complaints from owners, and even a ...

We're roundin' third on our maintenance kick on Truckin magazine's longest-running truck project. What started as simply knocking the dust off our '64 "GMC" to hit some cruises during the great ...

Next year, heavy-duty GM trucks will lose their Allison badges, even though the transmissions themselves won't change.

If you know about automatic transmissions then you know about the legendary GM 4L80E transmission. The 4L80E debuted in 1991. Features included an overdrive and a lock-up torque converter. It was also ...

A federal judge certified a class-action lawsuit against GM Monday in regard to claims the automaker knowingly sold defective transmissions in around 800,000 cars. U.S. District Judge David Lawson ...

The 700R4 transmission from General Motors continues to be a reliable and sought-after automatic gearbox more than 40 years after its introduction. Used in all manner of cars and trucks, the GM Turbo ...

GM has announced a new automatic transmission with 8 speeds as a standard feature in 2015 Chevrolet Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali. The new Hydra-Matic 8L90 8-speed is to ...

Originally developed for the 2015 Corvette Z06, GM’s Hydra-Matic 8L90 eight-speed auto trickled to the normal 2015 Corvette and the 2015 Cadillac Escalade. Designed to be mated exclusively to the 6.2 ...