NHTSA Complaint #11636906 — 2020 CHEVROLET SILVERADO 3500

SERVICE BRAKES issue reported to NHTSA

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Complaint Details

ODI Number	11636906
Vehicle	2020 CHEVROLET SILVERADO 3500
Component	SERVICE BRAKES
Date of Incident	December 30, 2024
Date Filed	January 19, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	CA

Consumer Description

During operation of the vehicle at approximately 45mph and sudden stopping/ breaking is required, truck fails to do so. It is a partial loss of brake pressure and a loud "whale cry" type sound that appears to be coming from under the hood. I have had it happen twice just recently; I have taken to dealer, and they cannot replicate the issue. I have caught the sound the second time on video. To summarize truck loses partial breaking power, pedal does not bottom out, but it feels like there is not as much pressure being applied to the breaks when needed. Once the sound stops all braking returns to normal.

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