Overview
- GM recalled a single 2022 lot of ACDelco GMW DOT 3 brake fluid covering 40,440 bottles in the United States, identified as lot 01977 091222.
- NHTSA tests in March on sealed bottles found visible sediment and a failure of the FMVSS No. 116 brake‑fluid standard.
- GM said the particles precipitated from two additives during production or bottling, not from outside contamination.
- The company is offering reimbursement to dealers and ACDelco direct purchasers for verified remaining stock, with dealer notices beginning Wednesday and other direct buyers set for June 8.
- Regulators said the sediment could impair braking under some conditions, and GM reported no crashes, injuries, or warranty claims tied to the lot.