The Reductant Control Module (RCM) is typically located directly on the Diesel Exhaust Fluid or DEF tank. It receives inputs from a variety of sensors, some hardwired directly to it, while most …

Emission reduction system, 3.0L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors. This is a special order part.

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GM Genuine Parts Diesel Exhaust Fluid (DEF) Modules are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE …

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If programming a control module is not successful, perform the following procedure: Verify the control module, data link connector and programming tool connections are secure and the tool …

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This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors. This is a special order part.