GM 12574379
A.I.R. Pump

Begin by raising the vehicle before starting replacement of the secondary air injection (AIR) pump. You must first disconnect both air inlet and outlet pipes from the air reaction pump along with separating the electrical Relay from the bracket and disconnecting the electrical connector from the pump. After you remove the three air pump bracket bolts from the vehicle frame you can extract the air pump. Secure the air pump installation within the vehicle by positioning it correctly before tightening all 3 bolts to the vehicle frame at 20 n.m (15 lb ft). Replace the electrical Relay on the air pump bracket after connecting its electrical connector to the pump. Begin by cleaning up the air inlet and outlet pipes and only then proceed to connect each pipe to the air pump before completion. Finally, lower the vehicle.

The first step for secondary air injection (AIR) pump replacement is to lift up the vehicle. First detach both air pipes from the air reaction pump before removing the Relay from its bracket and breaking the electric connector from the air pump. The installation begins by taking out the air pump from the vehicle after removing its 3 frame securing bolts. After placement of the air pump inside its installation slot position the three bolts on the vehicle frame until torque reaches 20 n.m (15 lb ft). Complete the electrical connector connection to the air pump followed by installing the electrical Relay on the air pump bracket then finalize contact between the air inlet and outlet pipes and the air pump by checking for debris before connection. Finally, lower the vehicle.