NHTSA Complaint #11639145 — 2020 CHEVROLET COLORADO

POWER TRAIN issue reported to NHTSA

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Complaint Details

ODI Number	11639145
Vehicle	2020 CHEVROLET COLORADO
Component	POWER TRAIN
Date of Incident	November 1, 2024
Date Filed	January 28, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	AZ

Consumer Description

No warning lights are illuminated but have this consistent violent Engine rattle/shuddering that is getting worse and worse. Also when looking under the hood the Crank pulley wobbles/rattles when truck is idle. Was told it could be the harmonic balancer going out due to there being a gap between that and the Crank. The truck only has 100,000 miles on it. I got it used at 88,000 miles and have barely had the truck for a year now, the steering wheel was intermittently difficult to maneuver and no warning lights illuminate, the truck shifts hard from 1st to second gear now and seriously hesitates to accelerate. This is extremely concerning and apparently an ongoing complaint for this vehicle and something should be done about it. Not only does it cause financial destress on the owners of the vehicles but also a safety hazard to the driver

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#11713350 — January 26, 2026 — My truck has been shuddering and when put into gear it sounds like the bottom is falling out of it. Now when I am dri...

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#11703534 — December 7, 2025 — Torque converter shudder. Had dealer do the recommended flush which cost $800 and still has same issue.

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