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.

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