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Service Brake Assist Message

Discussion in 'Engine & Drivetrain' started by Rdr854, Apr 12, 2021.

  1. Rdr854

    Rdr854 Full Access Member

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    I periodically get a service brake assist message on the DIC of my 2019 Suburban when starting the motor after fueling. The message is there for a few seconds and then disappears. There is no check engine light and no apparent degradation in brake performance.

    What is going on?
     
  2. Doubeleive

    Doubeleive Supporting Member

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    possibly low brake fluid or brake fluid level sensor if equipped.
     
  3. Doubeleive

    Doubeleive Supporting Member

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    I think on these k2's there is a seal that goes or can go bad on the brake vacuum also
     
  4. Rdr854

    Rdr854 Full Access Member

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    Thank you. Dealership here I come!!!
     
  5. SuperOldSchool

    SuperOldSchool Full Access Member

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    Had this same thing. Was some sensors in the rear . Replaced under warranty .
     

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