Chassis, generic

C0024 Brake Pedal Feedback Pressure Solenoid Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Covers the solenoid that generates brake pedal feedback pressure in an electronic or brake-by-wire braking system. Because the driver is hydraulically decoupled during controlled braking, a pedal-feel simulator uses this solenoid to build a controlled counter-pressure so the pedal feels natural. The module monitors the coil circuit for opens, shorts and out-of-range resistance and checks that feedback pressure tracks the command. GM documents C0024 on 2019-2020 Cadillac XT6, Chevrolet Blazer and GMC Acadia with reduced brake assist, warning messages in the driver display and an altered pedal feel. A fault alters pedal feel and may reduce controlled assist; the brake or ABS warning lamp is set.

Likely causes

Feedback solenoid open or shorted
Harness or connector fault
Internal brake actuation unit fault

Symptoms

  • Changed or abnormal pedal feel
  • Loss of brake assist, driver messages
  • ABS or brake warning lamp on

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€300–2,000
Time1.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

pedal feedback solenoid

Related codes

C0025C0021C0047

References: static.nhtsa.gov, en.wikipedia.org.