California Lemon Law News + Info

GM’s 8-Speed Transmissions Subject to Lawsuit

General Motors’ 8L45 and 8L90 automatic transmissions installed in some 2015-2019 Chevrolet, Cadillac and GMC vehicles are alleged to suffer from defects such as hard shifting, shaking, jerking, shuddering and hesitating.

In the proposed class action lawsuit, which targets vehicles from California, Florida, Illinois, New York, Oklahoma and Texas, General Motors was accused of not finding solutions to these common problems and hiding their seriousness from consumers.

General Motors informed its dealerships of the issues faced by the 8L45 and 8L90 transmissions. According to the lawsuit, the company’s approach was to buy time until the vehicles’ warranties expired.

The plaintiffs said one method included telling consumers that the transmissions were “adaptive” and need to “learn” the owner’s driving habits to function smoothly. Once the warranties hit their expiration date, consumers were forced to foot the bill for these costly repairs.


Lemon Law Help by Knight Law Group is an automotive lemon law firm that exclusively practices in California. If you are a California resident who purchased or leased a defective vehicle from a licensed dealership in California, we may be able to help you get rid of your potential lemon and recover significant cash compensation. Model year restrictions apply: 2017–Present vehicle models only.

However, we cannot help those who reside outside of California or purchased their vehicle outside of California unless they are active duty members of the Armed Forces, nor will we be able to refer those to a lemon law firm in their states.

To learn more about the California Lemon Law and your legal rights, visit our guides on the California Lemon Law and Used Car Lemon Law for more information.

Think You Have a Lemon?

Tell us about Yourself
Tell us about your vehicle

By submitting this form, you agree to be contacted via phone, text or email regarding your claim.