2004 CHEVY 2500 HD DURAMAX DIESEL WHAT CAUSES THE P0641 CODE TO APPEAR. WHY DOES THE ENGINE GO INTO REDUCED POWER MODE?
Hi there,
This code indicates an issue with the ECM. Here is some info for you.
P0641 CHEVROLET - 5 Volt Reference Voltage Incorrect Read more: https://www.autocodes.com/p0641_chevrolet.html
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