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

BatteryScoutCommunity StarterJan 23, 20262021 Chevrolet Silverado 1500 LTZ 6.2Orange County
2021 Chevrolet Silverado 1500 LTZ 6.2, about 22,000 miles. 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 Orange County.
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9 replies

TorqueMiles98Community StarterCommunity StarterJan 23, 2026permalink
Don't send a deposit on a phone quote. Two 2021 Chevrolet Silverado 1500 quotes only help if both include tax, title, and the same options. Screenshot the worksheet if you can. Stop there until you know. A day of patience here is cheaper than a wrong part. If the story changes I'll post the new data.
JDMCamperCommunity StarterCommunity StarterJan 23, 2026permalink
Get the messy numbers in writing first. Call your insurer in Orange County before you fall in love with the 2021 Chevrolet Silverado 1500. If they balk, that's your answer. On “need advice: silverado light-throttle shudder: engine or,” that was the fork that mattered for me. Post the numbers (or the code) and people can get more specific. I screenshotted the quote for later.
BatteryScoutCommunity StarterCommunity StarterJan 24, 2026permalink
OP here. Still looking, but I'm waiting on inspection notes before I send money on the 2021 Chevrolet Silverado 1500. Doing the boring step first on purpose.
BatteryScoutCommunity StarterCommunity StarterJan 24, 2026permalink
Walked a dealership this week on the 2021 Chevrolet Silverado 1500 (22,000 miles) and the doc fee was the tell. This is the version I'd tell a friend.
PixelHauler75Community StarterCommunity StarterJan 24, 2026permalink
I hear you, though I'd still want a second check. GAP, paint, and nitrogen are optional until you run the 2021 Chevrolet Silverado 1500 numbers without them. I'd rather lose the car than buy a foggy deal. 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 Orange County with 22,000 miles. Do that first. I screenshotted the quote for later.
ColdStartRunner19Community StarterCommunity StarterJan 24, 2026permalink
I would not stare at the monthly. If they're pushing term length to shrink the payment, the 2021 Chevrolet Silverado 1500 price probably got worse. Then the comparison gets honest. If they can't show the line item, I assume it's hiding. If the story changes I'll post the new data.
JDMCamperCommunity StarterCommunity StarterJan 24, 2026permalink
Get the messy numbers in writing first. Call your insurer in Orange County before you fall in love with the 2021 Chevrolet Silverado 1500. Do that before you talk monthly again. 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 Orange County with 22,000 miles. Post the numbers (or the code) and people can get more specific. Wrote this up on my lunch break.
ColdStartRunner19Community StarterCommunity StarterJan 24, 2026permalink
The trap is a pretty payment hiding a worse car price. Two 2021 Chevrolet Silverado 1500 quotes only help if both include tax, title, and the same options. Then the comparison gets honest. I'd want that in writing, not as a promise. Not letting add-ons ride along because everyone does.
GarageDad13Community StarterCommunity StarterJan 25, 2026permalink
Treat this like a math problem, not a vibe. GAP, paint, and nitrogen are optional until you run the 2021 Chevrolet Silverado 1500 numbers without them. If they balk, that's your answer. This is from a 2021 Chevrolet Silverado 1500 in Orange County with 22,000 miles. If you share a photo of the worksheet, easier to sanity-check. If this is nothing, great. I want that in data.
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