Reductant System Malfunction Service Bay Test: Description
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
A Reductant System Malfunction Warning Service Bay Test is required when the Exhaust Fluid Quality Poor message is displayed on the driver information center (DIC). The Reductant System Malfunction Warning Service Bay Test is used to verify proper operation of the reductant system and clear the Diesel Exhaust Fluid Quality warning after the condition causing the warning has been repaired.