C0269 GMC – Excessive Dump/Isolation Time

C0269 GMC Possible Symptoms

Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

C0269 GMC Possible Causes

Faulty Brake Pressure Modulator Valve (BPMV),Brake Pressure Modulator Valve (BPMV) harness is open or shorted,Brake Pressure Modulator Valve (BPMV) circuit poor electrical connection

C0269 GMC Description

The Electronic Brake Control Module (EBCM) microprocessor grounds the dump coil to energize and close the dump valve. This will release the excessive brake pressure which was applied by the driver to the wheels. If the EBCM microprocessor generates a dump command on one or more wheel for greater than nine seconds, the DTC will set.