N222359341 Product Emission Recall DEF Pump May Activate Before Frozen DEF is Sufficiently Thawed – 2022 Chevrolet Silverado 4500HD/500HD/6500HD
NHTSA ID Number: 10222274 Manufacturer Communication Number: N222359341 Summary Population expansion for emission recall. Certain vehicles with a 6.6L diesel engine. In cold ambient temperatures when Diesel Emissions Fluid (DEF) in the DEF tank is frozen, the DEF tank pump may be activated before DEF has been sufficiently thawed by the heater. If this condition occurs, the …
