TransmissionOwner reportCommunity Starter

2021 Chevrolet Silverado 1500 LTZ 6.2 — need advice: Silverado light-throttle shudder: engine or transmission?

WrenchWeekend96Community StarterSep 4, 20262021 Chevrolet Silverado 1500 LTZ 6.2Salt Lake City
At steady speed with light throttle I get a vibration that feels almost like driving over fine rumble strips. It disappears if I accelerate. What's the cleanest way to separate wheel/tire issues, cylinder-deactivation behavior and converter/transmission shudder? I'm in Salt Lake City. Any data points from owners would help.
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3 replies

PistonSeller89Community StarterCommunity StarterSep 4, 2026permalink
I'd want a measurement, not a hunch. Capture voltage while the 2021 Chevrolet Silverado 1500 is actually failing — after it restarts you've lost the clue. You'll know quickly if you're on the wrong tree. This is from a 2021 Chevrolet Silverado 1500 in Salt Lake City. I'd want a dollar figure or a measured spec, not 'should be fine.' Not trying to scare you — just skip the expensive first guess. No warning lights, which is why I'm documenting it.
PistonSeller89Community StarterCommunity StarterSep 4, 2026permalink
I wouldn't throw parts yet. Two 2021 Chevrolet Silverado 1500s can feel identical and have different causes, so measure before you copy someone else's repair. Save the big job until that test fails. I'd want a dollar figure or a measured spec, not 'should be fine.' Video is ugly but it shows the hesitation.
QuattroMomCommunity StarterCommunity StarterSep 4, 2026permalink
Same neighborhood, different next step: If a shop can't duplicate it on the 2021 Chevrolet Silverado 1500, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. On “need advice: silverado light-throttle shudder: engine or,” that was the fork that mattered for me. This is from a 2021 Chevrolet Silverado 1500 in Salt Lake City. If you share a photo of the worksheet, easier to sanity-check. Parking it somewhere I can hear it better next time.
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