CHEVY BULLETIN – ENGINE BLOCK HEATERS
General Motors has identified that Engine Block heaters on the Duramax Diesel engines are NOT designed for full time use. General Motors reminds customers that usage of the engine block heater is for inclement weather conditions specific to assisting with cold weather starts – not for continual usage or usage during non-cold weather conditions”. The Block Heater is “not to be continuously plugged into an “AC” source”.
Cromwell asks that your service people check to make sure you are “not in line” with your shoreline for continuous use. The photo here of Cromwell President Barry Bashkoff, shows the factory female plug (black plug) and a pigtail (yellow receptacle) that would connect the block heater to the vehicles shoreline. If your vehicle is connected, we recommend you disconnect the full time use mode and only use this feature during extreme cold weather.
Although this is a General Motors bulletin, we presume the same holds true for Ford Motor corporation as well.
For more information contact Bryan Tracy @ Cromwell Service 518-373-0807.

Click to read the entire bulletin:  GM Bulletin 117

Engine block heater

 

 

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