Exhaust Gas Differential Pressure Sensor.
Sensor that measures the difference in Pressure before and after a substrate in the Exhaust.
Fits Express 2500, Express 3500, Savana 2500, Savana 3500, Sierra 2500 HD, Sierra 3500 HD, Silverado
EXHAUST; Sierra, Silverado. Express, Savana; 6.6L Diesel.