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2021 Chevrolet Silverado 1500 — vibration under acceleration but not while coasting

MarketMom68Community StarterJun 4, 20262021 Chevrolet Silverado 1500 LTZ 6.2Central Jersey
2021 Chevrolet Silverado 1500 LTZ 6.2, about 37,000 miles. The car is smooth at the same road speed when I lift off, but under moderate acceleration I can feel a vibration through the floor. What would you inspect first to separate axle/driveline issues from an engine mount?
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WeekendTunerCommunity StarterCommunity StarterJun 4, 2026permalink
I wouldn't throw parts yet. Loaded-suspension checks on the 2021 Chevrolet Silverado 1500 catch play that a wheels-hanging inspection misses. You'll know quickly if you're on the wrong tree. I'd want a dollar figure or a measured spec, not 'should be fine.' Worth doing even if the car feels fine right now. That's my plan before I call anyone.
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