Chevy ABS and Brake Dash Light fix

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• published: 22 Dec 2012
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This is how to fix intermittent ABS and Brake dash lights on all Chevrolet vehicles with the Kelsey-Hayes 325 EBCM module. You may have code C0265 "Electronic Brake Control Module Motor Relay Circuit." The fault is usually due to corrupted solder joints on the circuit board to which the motor relay circuit is connected and is easily repaired with additional solder. The warning lights are intermittent whereas the poor solder joints result in brief communication interruptions with the relay circuit. The warnings will extinguish when reset (turning the vehicle off/on) and will illuminate again once the circuit loses its communications path. *To address comments/concerns: In the video I use 100% silicone inside the module instead of silicone heat transfer paste. Thermal transfer paste IS a silicone product with a wide range of operating temperatures, low corrosive properties (neutral curing) and conductive fillers. The conditions inside the module would not remotely exceed the limits of 100% silicone and the thermal paste makes contact with the INSULATED PORTIONS OF THE BOARD. Therefore it would not be effectively transferring an inordinate amount of heat anyway. (An insulator, as the name suggests, insulates AGAINST the transfer of heat.) I made a reasonable determination that regular silicone would suffice whereas the insulated portions of the board used as the contact points transfer heat far less effectively than regular silicone. That board is rather robust and is installed external to the vehicle in a location that sits above asphalt roads. That asphalt gets 50°C higher than outside temperatures. Employ a rational thought process and you will realize that heat dissipation from the board will not occur when the outside conditions are hotter than internal component conditions. (Some modules are even installed in a hot engine compartment.) That heat sink will transfer those higher temperatures INTO the module. How important do you think the transfer paste is now? Credit is given to "personalfunfest" for his video describing the issue (see link below). My video describes how to repair the problem in depth. I was consuming cough drops while filming so please excuse the sounds and inability to breathe through my nose. :( personalfunfest's video: http://www.youtube.com/watch?v=P_6Sk7-fm0I