New transmission option will only be available on trucks with 6.2-litre EcoTec3 V8
Just a year after being introduced, GM’s line of full-size light-duty pickups will be receiving a newly available eight-speed automatic transmission. The same transmission will also be available on GM’s line of full-size SUVs.
The Hydra-Matic 8L90 eight-speed automatic is approximately the same in weight and size as the outgoing six-speed automatic, but offers a much wider ratio of gears as well as shorter first and second gears to improve starts while hauling.
Fuel economy numbers will be available toward the end of the year.