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Chevrolet · Service bulletin · issued 2021-11-17

Chevrolet Service bulletin 10205549

NHTSA summary, verbatim

This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp Illuminated and/or Service Brake Assist Message Displayed, with DTC P0557 Stored.

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Where this shows up in our reports

  • 2018 Chevrolet Equinox: Hard brake pedal — vacuum pump / Service Brake Assist — GM's service bulletin (internal 10205549, DTC P0557) ties it to the brake vacuum pump on 2018–2021 cars.
  • 2019 Chevrolet Equinox: Brake pedal goes rock-hard — vacuum pump failure — GM's service bulletin (internal 10205549, diagnostic code P0557) ties it to the brake vacuum pump on 2018–2021 cars; the pump is found 'internally damaged' and replaced.
  • 2020 Chevrolet Equinox: Brake pedal goes rock-hard — vacuum pump failure — GM's service bulletin (internal 10205549, code P0557) points to the brake vacuum pump on 2018–2021 cars; the pump is found internally damaged and replaced.
  • 2018 GMC Terrain: Brake pedal goes rock-hard — vacuum pump failure, and no recall — GM's service bulletin 10205549 ties it to fault code P0557 and a Service Brake Assist message on 2018 to 2021 cars, and diagnostic bulletin 10208020 names "increased brake pedal effort due to vacuum pump failure" outright.
  • 2019 GMC Terrain: Brake pedal goes rock-hard — vacuum pump failure, and still no recall — GM's service bulletin 10205549 covers 2018 to 2021 cars, ties the failure to fault code P0557 and a Service Brake Assist message, and tells dealers to replace a pump found internally damaged.
  • 2020 GMC Terrain: Brake pedal goes rock-hard — the most concentrated year for this failure — GM's service bulletin 10205549 covers 2018 through 2021, ties the failure to fault code P0557 and a Service Brake Assist dashboard message, and instructs dealers to replace a pump found internally damaged.
  • 2021 GMC Terrain: The brake vacuum pump is still on GM's list for this year — Service bulletin 10205549 and diagnostic bulletin 10208020 both cover 2018 through 2021.

Source: NHTSA document 10205549