2023 Rivian R1T — buzzing noise only at one engine RPM

It did buzzing noise only at one engine rpm twice this week, both times after sitting. No change in mileage feel. I keep a notes app thread for this now.

Ask what changed right before it started. Two 2023 Rivian R1Ts can feel identical and have different causes, so measure before you copy someone else's repair. If the cheap test changes it, stop and reassess. This is from a 2023 Rivian R1T in Salt Lake City with 30,000 miles. If it doesn't change the out-the-door or the repair estimate, it's noise. No warning lights, which is why I'm documenting it.

Log the conditions before you spend. Get a real battery/charging test on the 2023 Rivian R1T, not just resting voltage, before blaming a module. Save the big job until that test fails. On “buzzing noise only at one engine rpm,” that was the fork that mattered for me. That's the sequence I'd use. If your situation is the opposite, ignore me. I refuse to clear codes until someone else sees them.

OP update: scanned the 2023 Rivian R1T again and still only have the one pending code, no new lights. This is me being the wet blanket on purpose.

OP update: scanned the 2023 Rivian R1T again and still only have the one pending code, no new lights. Checking again after work.

I wouldn't throw parts yet. Write temp, speed, and in-gear vs coast when the 2023 Rivian R1T does it — then decide on parts. You'll know quickly if you're on the wrong tree. This is from a 2023 Rivian R1T in Salt Lake City with 30,000 miles. No need to make it theatrical. If this is nothing, great. I want that in data.

I'd want a measurement, not a hunch. Move a coil or plug on the 2023 Rivian R1T if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. Take it or leave it — that's what I'd do. Happens in gear, not in park, for what that's worth.

This is usually cheaper to test than to guess. Move a coil or plug on the 2023 Rivian R1T if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. No need to make it theatrical. This is the version I'd tell a friend.

Log the conditions before you spend. Move a coil or plug on the 2023 Rivian R1T if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. On “buzzing noise only at one engine rpm,” that was the fork that mattered for me. This is from a 2023 Rivian R1T in Salt Lake City with 30,000 miles. A shop burned me once by skipping that step. I'm in no rush to be a hero on it.

OP here — recorded a short video and noted speed, temp, and whether it was in gear. Trying not to diagnose from the couch.