Tesla Cybertruck 2024–2025 — technical service bulletin
Bulletin SB-26-40-001 · NHTSA communication 11030614 · issued Mar 26, 2026
Technical service bulletin
communication type
Power Train
component
2024–2025
model years
2
vehicle entries
Official summary
On certain Cybertruck vehicles, the halfshaft bolts may lose torque, which may cause a loud grinding noise if the hub and axle facespline teeth become unseated and damaged. If axle grinding noise is present before starting this bulletin, replace the hub, halfshaft, and halfshaft bolt on the impacted corner. Replace the remaining halfshaft bolts on the unaffected halfshaft locations. Then, run a Double Pedal Torque Test to confirm the hub and halfshaft facespline teeth are properly seated. If no axle grinding noise is present before starting this bulletin, replace all 4 halfshaft bolts and run
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.