Bode

2019 Silverado has slight vibration on acceleration especially if the four-wheel-drive is locked in. I’m a 40 year mechanic and suspect driveshafts, motor mounts, exhaust hitting /rubbing frame, trans mount. This type of vibration is usually engine vibration being transmitted directly to metal likely the frame. Engine trans exhaust should all be isolated by rubber. But the engine torque is likely pushing past the rubber and causing something to contact metal. Hope this helps.