There may be a rattle sound heard from the brake pedal area on some 2025 HUMMER EV models. The sound may be caused by excess body seam sealer extending under the brake pedal housing. (Fig. 13)
If the sound is present in the vehicle interior, verify the brake pedal rattle. Next, check the brake pedal housing near the sky bolt (the single bolt on top of the housing) for excess body seam sealer. It will be necessary to trim back the excess seam sealer.
Fig. 13
To trim the excess sealer, remove the brake pedal assembly. (Fig. 14) Refer to Brake Pedal Assembly Replacement in the appropriate Service Information.
Fig. 14
Locate the excess sealer and remove the section of sealer that is contacting the brake pedal using an appropriate scraping tool. (Fig. 15)
Fig. 15
Once repairs are complete and the brake pedal assembly is reinstalled, be sure to calibrate the Brake Pedal Position Sensor.
Refer to Bulletin #25-NA-003 for more details.
– Thanks to Kurtis Hoezee
