Back in 2017, GM and Ford joined forces to co-develop a new 10-speed automatic transmission for rear-wheel-drive applications. Both automakers jointly developed the basis of the transmission, but then finalized development independently. The end result is GM produced the 10LXX transmissions, and Ford producing the 10RXX transmission. However, a recent class action lawsuit brought against the Ford transmission raises questions over whether or not similar issues will be found with the GM unit.
According to a recent Ford transmission lawsuit, the 10R80 10-speed automatic equipped in Ford F-150 models can exhibit “harsh shifting, jerking, hesitation and slipped gears,” creating a potentially “life-threatening” situation. The lawsuit even alleges some owners have suffered whiplash due to the poor shifting quality of the Ford transmission.
One plaintiff reports that his recently-leased 2018 Ford F-150 XLT 3.5L EcoBoost will make a loud “clunk” or “bang” when starting the engine. The transmission will also hold onto gears for too long, and show significant power loss while shifting when the vehicle is “cold.” The truck is just five months old with 6,000 miles on the clock.
Further issues included an error message that read “drive mode not available” on the dash, accompanied by an inability to accelerate or shift. Ford has two multiple service bulletins to address the issue, but neither has fully remedied the problem.
All of these Ford transmission issues no doubt raise concerns for those GM models equipped with the GM 10LXX 10-speed automatic, given its inclusion in a large number of GM models, including:
- Chevrolet Silverado
- GMC Sierra
- Cadillac CT4, CT5, CT6
- Cadillac Escalade
- Chevrolet Camaro
- Chevrolet Tahoe
- Chevrolet Suburban
- GMC Yukon, Yukon XL
- Upcoming Cadillac CT5
- Upcoming Cadillac CT4
Should the GM 10LXX family of transmissions start to exhibit similar issues, GM could be in for a world of hurt. After all, The General is already facing a number of issues with its 8L90 and 8L45 eight-speed automatic transmission, including shaking, jerking, and “hard shift” characteristics that it seems to have addressed via a service bulletin.