2015 Chevrolet/GMC Trucks, SUVs With 6.2L V-8 Get Standard 8-Speed Jul 18, 2014 | News The eight-speed automatic makes its way into 2015 Chevrolet/GMC trucks and SUVs with the 6.2-liter V-8 as standard equipment. The longitudinal Hydra-Matic 8L90 eight-speed automatic transmission that debuted …read more Share this:FacebookTwitterPinterest