Resetting Chevy caliper

This bulletin applies to 2020 Chevy Corvette and Blazer vehicles (as well as other models equipped with eBoost.) Performing a brake inspection or any repair that requires the caliper piston to be re-seated may cause DTC C05B0 to falsely set for eBoost applications.
Sept. 2, 2025

This bulletin applies to 2020 Chevy Corvette and Blazer vehicles (as well as other models equipped with eBoost.) Performing a brake inspection or any repair that requires the caliper piston to be re-seated may cause DTC C05B0 to falsely set for eBoost applications.

Refer to diagnostic procedures for DTC C05B0 and verify that there are no leaks in any of the brake components before proceeding.

  1. Disconnect the negative battery cable.
  2. Ensure that the brake pads are fully seated to the rotors and that the brake pedal is firm. If the brake pedal is firm and the brake pads are fully seated, continue to Step 3. If the brake pedal is not firm and/or the pads are not fully seated, gradually apply the brake pedal to about 2/3 of its travel distance. Wait 15 seconds and repeat until the brake pedal is form and the pads are fully seated.
  3. Reconnect the negative battery cable.
  4. Clear the DTCs.

About the Author

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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