The antilock braking system (ABS) and the brake lights are on ... fault code and an additional fault code C1242 Brake Pressure Modulator Valve (BPMV) Pump Motor Ground Circuit Open.

The problem: in affected vehicles, the bolt which attaches the brake pressure modulator valve assembly may not be adequately tightened, and thus may fail to seal the two sub-assemblies.

If misalignment occurs, eventually the ABS would be non-functional ... Dealers will replace the brake pressure module valve assembly. The manufacturer has reported that owner notification will ...

CT and X-ray scans revealed a gap between the bolt head and brake pressure modulator valve, thus indicating a water leak. How could this happen? Well, both vehicles had been subject to temporary ...

As reported in The Detroit News, the company identified a defective brake-pressure modulator valve after investigating a failed part returned under warranty for a Volt exported to another country.