2009 Chevrolet Avalanche Air Hose

First, locate the leaking area, turn the ignition off and install a scan tool. Next cut/remove the leaking line section and remove the plastic retainer pin from one of the nuts. Tighten the air line tube repair nut to 8 Nm and install the air line tube to the end of the coupling. Finally, install the air line tube to the vehicle and make sure the vehicle is on level ground.