Which cars report code C055F?

Code C055F is named in 3 US owner complaints. Models: 2, model years 2025–2025. Chevrolet Traverse, Chevrolet Colorado.

C055F code: BSCM/EBBC Hydraulic Unit Performance

Q: What does code C055F mean?

BSCM/EBBC Hydraulic Unit Performance. How to read C055F: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 55F identify the specific fault.

Code C055F is named in 3 US owner complaints. Models: 2, model years 2025–2025.

What the code means

BSCM/EBBC Hydraulic Unit Performance. Generic meaning per SAE J2012 (the same for all makes).

How to read C055F: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 55F identify the specific fault.

ABS/ESC codes: wheel speed sensors, the ABS hydraulic unit and pump, brake booster, pressure and yaw sensors. A hit to a wheel or suspension often damages the wheel speed sensor or its wiring, so on a damaged car this code is a reason to inspect the hub, knuckle and control arms, not just swap the sensor.

Key figures

Complaints with this code: 3
Models: 2
Model years: 2025–2025

Which models and years

Models whose owners name this code (2). Years link to the model year problems page.

Model	Years	Complaints
Chevrolet Traverse	2025	2
Chevrolet Colorado	2025	1

Components named together with the code

Component as the owner filed it (one complaint can list several).

Service brakes 3
Engine 1
Forward collision avoidance 1

What to do if an auction car has this code

Inspect the wheel and suspension on the impact side: the wheel speed sensor is often damaged together with the hub or knuckle.
Check whether the ABS and ESC lights stay on after start-up.
After replacing sensors or the hydraulic unit, bleeding and scan tool adaptation may be required.

What owners report

Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.

A passenger seated in the front passengerâs side seat experienced mental distress. The vehicle was taken to a local dealer, where it was diagnosed, and DTC: P053D, C055F, P25A2, and 25NA240 were retrieved. The vehicle was repaired under warranty; however, the failure persisted.
Chevrolet Traverse 2025 · 2026-10
They read the codes and found a service bulletin. â6721 found service bulletin for code C055F vehicle needs a master cylinder/booster/ebcm parts orderedâ They told me it was safe to drive but I refused to drive given what I found online about this issues. The vehicle took a week to fix.
Chevrolet Colorado 2025 · 2026-06
The dealer was contacted and agreed to have the vehicle towed from the residence to the dealer. The dealer performed a diagnostic and retrieved DTC: C055F, for the brake master cylinder failure. The dealer informed the contact of Technical Service Bulletin: 25-NA-240; and the failure was associated with the failure.
Chevrolet Traverse 2025 · 2026-04

Related codes

Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.