GM Genuine Parts 84631875 DEF Reductant Control Module - OEM Quality For GM Diesel Vehicles

About This Product

Keep your GM diesel running clean with this genuine DEF reductant control module. It’s the real deal—designed, engineered, and tested to GM's strict standards, so you know it’ll fit and work exactly like the original. This is the same part GM uses in production, so you’re getting OEM quality and reliability. Whether you drive a Chevrolet, Buick, GMC, or Cadillac with a diesel engine, this module ensures your exhaust fluid system operates properly. No guessing games or compatibility issues here—just plug-and-play performance backed by General Motors. Perfect for DIYers or pros who want factory-level parts without the dealership markup.