I am looking at a early 2007 Duramax on a used Chevy lot. It is a 2nd owner with 11000 miles. I talked to the so called owner and he said he to top the coolant a few times . I know on a new vehicle that throws a red flag. He didn`t know of anything wrong with the truck. Has anyone experienced this with diesel.
Appleman.

 

Welcome to the Chevrolet Forum!!!

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Chevrolet Extended Warranty - Are you covered?
Are your other GM vehicles covered with a General Motors Protection Plan (GMPP)?

 

Normally a coolant loss without a visible leak on the Duramax is caused by a faulty EGR cooler, the dealer will know what to do for the repair and it is covered under the new car warranty.


Dave.