Car Problem Reports

GMC Acadia Brake booster failure due to internally leaking brake master cylinder

GMC Acadia Problem
23 Reports
Me Too

Model Years Affected: 2007, 2008, 2009, 2011, 2012

Average Mileage: 89,201 mi (44,000 mi - 150,000 mi)

  • Visitor, , 78,000 mi

    I got a msg on my dash that read "stabilitrak off", then "check brakes". Took it in & they tell me the master cylinder was leaking brake fluid & it leaked right onto the brake booster (design flaw maybe?) so I had to replace both master cylinder & booster to the tune of $1100! Not too happy with it at all. Definitely won't be purchasing another GM vehicle in the future! Never had any issues with my Honda. Should've stuck with them!

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  •  Rookie

    Internal brake fluid leak. Master cylinder and brake booster to be replaced at a very high price!

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  • Profile_thumbnail

    Service brake system message, sometimes Service Stability, red brake light and TRAC OFF message.
    These are sometimes the result of low brake fluid, but no obvious leaks are noted. Due to the design of the master cylinder and brake booster, the master cylinder can leak from the rear seal and collect inside the booster, leaving no drops on the ground or obvious signs.

    You will need to replace the master cylinder and booster to correct.

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  • bawhalen, , 111,538 mi

    Same scenario stabilizer light off and check brake indicator. Master cylinder leaking in tobrake booster $900 repair bill. Obviously a design issue will not buy another GMC product.

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  • Visitor, , 67,000 mi

    leaking internal brake master cylinder to the booster

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  • Brenb, , 70,000 mi

    Brake fluid leaking toMaster cylinder
    Alarms stabilitrak off & service brake system

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  • Visitor, , 135,000 mi

    stabilitrack off and service brake system light coming on leaking on garage floor from the rear of vechicle.

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  • Visitor, , 58,600 mi

    problem with brake booster full of braks fluid from master cylinder leak $1200.00 repair talked to GM found no satisfaction on repairs even service rep said it is a problem he has seen a lot no help from GM. not buying another GM toyota looking better all the time

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  • Visitor, , 44,000 mi

    At such low mileage it is extremely disappointing to have this same problem (at the tune of $1000), which naturally started just after the warranty period expired. I am also experiencing the steering wheel noise problem($1400)and noises from worn out lower control arm bushings($800). My recommendation is either not buy a GM (government motors)vehicle or unload it before the end of the warranty period. You can also get the 2 year extended warranty for about $3500. I will never buy another GM vehicle again.

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  • Visitor, , 150,000 mi

    Same problem stability light and traction control light. Said master cylinder leaked into booster and both have to be replaced $1100.

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