OEM 2009 Chevrolet Express 3500 Evaporator

2009 Chevrolet Express 3500 Evaporator Parts Questions & Experts Answers

• Q: How to replace the air conditioning evaporator core on 2009 Chevrolet Express 3500?

  A: The replacement procedure for an air conditioning Evaporator core requires recovering all refrigerant from the a/c system first. Start by removing the coolant recovery reservoir and disconnecting both the Blower Motor assembly electrical connector followed by the low pressure sensor electrical connector and the Blower Motor resistor assembly electrical connector. Prepare the replacement by first removing the retaining nut and then the retaining screw of the inlet tube before extracting both the tube and the o-ring seal. Move onto uninstalling the retaining nut before extracting the accumulator and its o-ring seal from both components. Detach the blower module assembly before removing the Evaporator core from both Evaporator and blower module pieces. Before assembling the Evaporator you need to install the necessary pag oil quantity directly inside the component before adding the blower module assembly which should be fastened with retaining screws. Use new o-ring seals to attach the accumulator to the Evaporator while tightening the accumulator retaining nut to 18 nm (13 lb ft). Secure both pieces of the Evaporator inlet tube using a retaining screw and a retaining nut where torque should reach 16 nm (12 lb ft). Secure all electrical connection points for the Blower Motor resistor assembly electrical connector together with the Blower Motor assembly electrical connector and the low pressure sensor electrical connector. Place the coolant recovery reservoir back and perform an evacuation then recharge of the a/c system. The j 39400-a halogen leak detector should be used to conduct a leak test on the fittings of the components.