OEM 2004 Chevrolet Impala Evaporator

2004 Chevrolet Impala Evaporator Parts Questions & Experts Answers

• Q: How to replace the evaporator core on 2004 Chevrolet Impala?

  A: The procedure for evaporator core replacement begins with removing the HVAC module assembly while disconnecting the recirculation actuator electrical connector and removing the recirculation actuator electrical harness from the housing clips. You should start by taking off the recirculation housing from the HVAC module assembly before disconnecting the mode actuator electrical connector and removing the mode actuator. First disengage the air temperature actuator electric connection then remove the TXV holding bolts from the evaporator core and retrieve the TXV device by removing the old seal washers. The upper case of the HVAC module assembly must be unscrewed from the lower case before using a small chisel to remove the heat stakes. The HVAC device assembly case needs to be set apart before removing the evaporator core from its housing. Refrigerant oil should be applied to the replacement evaporator before installing side, upper, and lower seals to the core unit and finally inserting the evaporator into the lower HVAC module assembly. The 5.5 mm (7/32 in) drill bit should be used through the upper case to pierce the dimples surrounding heat stakes before joining the upper and lower HVAC module assembly case. after which you should reinstall screws which should be tightened to 1.5 N.m (13 lb in). Secure new screws at the locations next to the heat stakes while tightening them to 1.5 N.m (13 lb in). Begin by reconnecting the air temperature electrical connector before you install the mode actuator and secure its screws to 15 N.m (13 lb in). Last step is to connect the mode actuator electrical connector. First reattach the recirculation housing to the HVAC module using screws tightened at 1.5 N.m (13 lb in). Afterward channel the recirculation actuator harness inside the housing clips and connect the recirculation actuator electrical connector. Begin by installing new sealing washers onto the evaporator core then attach the TXV and use 7 N.m (62 lb in) torque when securing its bolts before fixing the HVAC module assembly back in place.