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Chevrolet Silverado K2XX (3rd Generation)

2014–2018 · K2XX · truck

The K2XX redesigned the Silverado with EcoTec3 engines (direct injection, AFM, variable valve timing). 4.3L V6, 5.3L L83 V8 (355hp), and the 6.2L L86 V8 (420hp) on High Country and LTZ. AFM continues from the GMT900 era — lifter failure is still the headline issue. The 8-speed 8L90 automatic introduced in 2015 on the 6.2L brings its own shudder complaints.

Watch out: AFM lifter collapse on the 5.3L L83 EcoTec3 — a single collapsed lifter can wipe a cam lobe and total the engine. Class-action litigation is ongoing (Harrison v. GM, E.D. Mich.); many owners delete AFM via tune + lifter swap before failure.