Jun 23, 2019 We sample the all-new 3.0-liter turbodiesel I-6 in the 2020 Chevrolet Silverado 1500. ... of that torque is in production at just 1,250 rpm, so the only time you'll ... on a Silverado 1500 Duramax diesel, but just know that the Chevy feels ... and if you don't buy a mid- to high-trim truck, all the missing features'.... Derringer Tuner, with iDash DataMonster for 2020-21 Chevy/GMC 2500/3500 ... iDash DataMonsterfor 2020-21 Chevy/GMC 2500/3500 6.6L Duramax, L5P ... rpm range, star