Chassis, generic

C0616 Park Brake Control Module Control Circuit Performance

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C0616 is the one code in this range that GM really uses. Its 2025 EBCM tables file over twenty parking brake self-tests under it, all Type C without MIL: the left and right H-bridge supplies may not differ by more than 12 % at 8–20 V, the current measuring path must read 10.5–17 A in its self-test, the motor voltage must stay between 7 and 18 V for 700 ms, plus watchdog, ASIC and rollaway checks. The 2019 tables for the L3B engine list C0616 for an ADC reference fault in the EBCM as Type A with MIL. Bulletin 24-NA-122 traces a parking brake warning on 2024 Silverado and Sierra HD trucks to EBCM software; the fix is reprogramming, not a new module. Mitsubishi reports similar faults as C10B3.

Likely causes

Software anomaly in the brake module (GM 2024 HD trucks, fixed by reprogramming)
Weak battery, poor ground or charging fault pushing motor voltage outside its window
Internal hardware fault in the parking brake ASIC, bridge or measuring path
Parking brake assembly check not completed after module replacement

Symptoms

  • Service Parking Brake message in the driver information center
  • Parking brake warning lamp; parking brake may be inhibited
  • Check engine lamp on some GM models

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,200
Time0.3–2 h

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

Parts involved

epb control moduleabs control module

Related codes

C0615C0617C0618C0680C0609

References: gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov, mitsubishitechinfo.com.