General Motors has added an eight-speed automatic transmission to its 2015 GMC Yukon Denali and Yukon Denali XL models that improves fuel economy from the six-speed offered with the 2014 models.
GM Recalls Trucks, SUVs for Chassis-Control System
The automaker’s 70th recall of this year includes 2014-MY Chevrolet Silverado HD and GMC Sierra HD pickup trucks.