2-mode strong hybrid automatic transmission

Thanks to hybrid technology, Tahoe® Hybrid is the most fuel-efficient SUV in its class,1 with an EPA estimated MPG 20 city and 23 highway. This hybrid electronic transmission reduces fuel consumption by providing electric-only power in first gear and in drive capability, engine-off at idle and during vehicle deceleration, electric boost to assist the gas engine and capturing electric energy during vehicle deceleration.

The key to this hybrid transmission is its unique combination of 2 electric motors and 4 fixed gears, packaged within the same space as a conventional automatic transmission. This arrangement allows electrically variable operation, as well as providing 4 fixed gear ratios, providing advantages in combined (city and highway) fuel economy, dynamics and towing capability.

1 Based on GM Large Utility segment.