Uploaded September 2020 | Updated September 2026, 2 weeks ago

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In this video I show a not so common issue involving a symptom of no communication with the ABS ECBM (electronic brake control module) an illuminated ABS, Brake and/or Traction system warning light(s) and/or stored code U0121. The subject vehicle is a 2014 GMC Savanna H1500 (AKA Chevy Express) van equipped with a 5.3L engine. Watch this video for more information.

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