On October 23, 2026 at about 7:25 AM, while my wife was driving our leased 2025 GMC Acadia (20,773 miles) with our son in the car, the vehicle displayed 'Brake assist failure. Press hard to brake. Speed limited.' The ABS and traction control warning lights came on and the brake pedal became very hard to press due to loss of brake assist. No crash or injuries occurred. This failure matches the eBoost electronic brake control module issue under the federal safety agency Engineering Analysis EA26006 covering 2024-2026 GMC Acadia. My wife is afraid to drive the vehicle. The vehicle is currently at the dealer for repair. I am requesting that the federal safety agency record this incident and that GM be required to remedy this safety defect and release us from the lease.
GMC Acadia abs comes on
63 of the 5,598 owner complaints about the GMC Acadia describe aBS light or ABS activating, most of them for the 2025 model year.
- owner complaints
- 63
- worst model year
- 2025
- typical repair cost reported
- $1,760
- typical mileage
- 62,000
By model year
Often reported together
Check engine light 13Brake failure 7Loss of power 5Jerking 5Adaptive cruise 5Power steering loss 4Airbag light 4Warning lights 2
Trouble codes mentioned
U0101 1P2138 1P1682 1P0014 1C0800 1C0561 1
What owners say
While driving my 2025 GMC Acadia, the vehicle experienced a sudden and severe failure of the brake master cylinder assembly, causing a significant loss of hydraulic pressure and braking assistance. Multiple dashboard warnings illuminated simultaneously, including ABS and brake system alerts. The brake pedal feel altered abruptly, drastically increasing the required stopping distance and creating an immediate collision hazard. The vehicle is currently grounded at a certified GM dealership awaiting a total replacement of the defective master cylinder assembly under factory warranty. Mileage at the time of failure was 19,000.
While driving my 2020 GMC Acadia SLT AWD Turbo with my young daughters in the vehicle, the brake pedal suddenly and sporadically lost all hydraulic pressure and sank nearly all the way to the floorboard. The vehicle would only gradually roll to a slow stop. Simultaneously, the dashboard illuminated with ABS and Service ESC notifications. After turning the vehicle completely off and restarting it, the braking system temporarily reverted to normal function before randomly failing again on a subsequent drive. The vehicle was brought to a local brake shop where it was dangerously misdiagnosed, and it is currently at a GMC dealership for an emergency teardown. Previously, without any warning, the vehicle would also experience a brake failure upon backing out of my garage. Once the brake was immediately pressed again, it would work. This intermittent loss of total stopping power constitutes a severe, life-threatening manufacturing defect.
Dropping my children off at school, 4 lights came on on the dash. Two messages came across my dash as well. Service esc service abs. EBCM master cylinder needed to be replaced at local GMC dealership.My brakes were failing…This is a known safety issue by GMC and there’s no recall!
My Acadia went into limp Mode displaying low power mode on the screen and wouldn’t start for a couple days after. Lights started illuminating on the dash as abs, traction control, and stanilitrack, then check engine light came on and my gmc app displayed code p2138. I have had since low power and extremely high gas consumption.
It has the ABS lights on and tire traction light on check engine light on and given signs of failed transmission Slow to takeoff shuttering of transmission
My 2014 GMC Acadia constantly displays “Service Stabilitrak,” “Service Traction Control,” ABS, brake, and check-engine warning lights. The vehicle will not accelerate past 40 mph under normal driving. Recently, the vehicle began showing “Engine Power Reduced” randomly without any warning, and the vehicle loses power suddenly. The OBD2 code P1682 (Ignition 1 Circuit/Relay failure) appears every time. This issue has caused the vehicle to jerk, lose acceleration, and even stall in the middle of an intersection during rush-hour traffic while my children were in the car, creating a serious safety hazard. These warnings and symptoms are constant, and the power-reduction events occur unpredictably. No official inspection has been completed by the manufacturer. The failed component is still in the vehicle and available for inspection. The malfunction affects traction control, stability control, braking systems, and engine power, putting occupants and other drivers at risk.
ABS Modulator failed leaking oil. Loss of braking Repair service found the same problem. Part was scrapped.
The vehicle brake system completely failed. The brake pedal was depressed and several warning lights were illuminated on the dash, yet the vehicle would not come to a complete stop. At the time of failure, the abs light, parking brake light, traction control light, and collision light illuminated on the driver display. Additionally, the dash displayed a message requesting the driver to depress brake pedal hard and to “service ESC”. The brake pedal felt soft and would go all the way towards the floor. The vehicle had very limited braking and would not come to a complete stop. The vehicle was taken to a GM dealership for diagnosis and repair. The dealership confirmed that the brake system had failed and there was inadequate stopping force being produced. The entire master cylinder assembly which includes the hydraulic valve block and electric motor were replaced under warranty. The vehicle had 24,638 miles at the time of failure. Prior to the failure, there were zero indications that there were any issues with the brake system. Fortunately when the brake system failed the vehicle had just backed away from a parking spot and pulled forward towards a stop sign at low speed. The potential concern was that pedestrians, fellow motorists or the driver of the vehicle could have experienced significant injury or death due to the vehicle’s brakes failing.
While driving vehicle, multiple warning codes appeared including: service traction control, ABS, service brake system and others. More importantly, the power brakes failed and a code was thrown to press hard on brakes to stop vehicle.
Related recalls
Service brakes, hydraulic: foundation components: disc: caliper
- What is wrong
- General Motors LLC (GM) is recalling certain model year 2017 Cadillac XT5 vehicles manufactured April 16, 2016, to May 9, 2016, and 2017 GMC Acadia vehicles manufactured April 19, 2016, to April 22, 2016. The front brake calipers may have a torn or misaligned caliper piston seal which may allow brake fluid to leak.
- Risk
- If there is a brake fluid leak, braking performance may be reduced, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will inspect the front brake calipers, replacing the brake caliper assemblies, as necessary, free of charge. The recall began on December 12, 2016. Owners may contact GM customer service at 1‑800‑458‑8006 (Cadillac), or 1‑800‑462‑8782 (GMC). GM's number for this recall is 16096.
Recall number 16V802000 · Recall details
Questions about the GMC Acadia abs
Why does the abs come on in the GMC Acadia?
Owners who report it most often also describe check engine light, brake failure and sudden loss of power, and the codes they mention most are U0101, P2138 and P1682.
Which GMC Acadia years have aBS light or ABS activating problems?
The model years with the most reports are 2025 (16 complaints), 2008 (8 complaints) and 2010 (6 complaints).
How much does it cost to fix ABS light or ABS activating on the GMC Acadia?
Owners who mentioned a price put the repair at about $1,760 (median of 6 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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