Rick's Free Auto Repair Advice

ABS pump runs continuously GM products

Fix ABS pump that runs continuously GM products C0265, C0267

Many GM and GMC trucks may experience a condition where the ABS pump motor runs constantly. The problem affects the following vehicles

Chevrolet Silverado 1500, 2500, 3500
Chevrolet Suburban
Chevrolet Astro Van
Chevrolet Tahoe
Cadillac Escalade
GMC Sierra Denali
GMC Sierra 1500, 2500, 3500
GMC Yukon

The ABS pump motor gets its running instructions from the Electronic Brake Control Module (EBCM). If either the power or ground wires to the EBCM are corroded or the connected has water intrusion, it can run the pump motor continuously. Check the pump motor for excessive current draw. Then listen to it to see if it makes too much noise. If it has either of those issues, you must replace it. Also replace the EBCM and reprogram it with the correct tire size.

© 2012 Rick Muscoplat

Posted on by Rick Muscoplat


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