Q: How to replace the air conditioning evaporator core on Chevrolet Colorado?
A: The HVAC module assembly must be removed as the first step to replace the air conditioning evaporator core. Split the HVAC module assembly halves by unscrewing its pieces followed by removing the evaporator temperature sensor control module screw before relocating the sensor module. The HVAC module assembly should be disassembled (1, 4) to enable the removal of the evaporator temperature sensor that connects to the evaporator. To complete the procedure remove the evaporator core from its position in the HVAC module assembly. New evaporator core installations require refrigerant oil according to the specified system capacity information provided in the refrigerant system specifications. The HVAC module assembly halves need their seal installed before inserting the evaporator core into the assembly and attaching the evaporator temperature sensor to the core. Install two screws to unite the HVAC module assembly parts (1, 4) while applying torque of 1.9 Nm (17 lb in) for tightening. Finish the evaporator temperature sensor control module screw installation process by both securing it and tightening it to 1.9 Nm (17 lb in). Reinstall the HVAC module assembly afterwards.
Q: How to Replace an Evaporator Core in an HVAC Module Assembly on Chevrolet Malibu?
A: The first step to replace the air conditioning evaporator core involves removing the HVAC module assembly while being mindful that some screws hide beneath foam insulation. You must remove all screws that hold together the HVAC module assembly before you can separate its two halves after which you need to detach both main parts of the HVAC module assembly. I should now remove the evaporator core from the HVAC module assembly as well as extract the seal that maintains the two halves of the HVAC module assembly. Before installing the new evaporator core you need to add refrigerant oil according to requirement. Insert the seal between the HVAC module assembly halves before placing the evaporator core inside the assembly while being sure the seal remains correctly positioned between the two case sections. The HVAC module assembly parts need to be assembled before screw installation to join the halves while tightening screws to 1.9 N.m (17 lb in). The last step requires HVAC module assembly installation.
Q: How to replace the evaporator core in the auxiliary HVAC module on Chevrolet Tahoe?
A: The initial step for Evaporator core replacement of the auxiliary hvac module requires refrigerant removal from the a/c system and subsequent drainage of engine coolant. The auxiliary hvac module under the vehicle requires disconnecting of heater lines (2,3) and air conditioning lines (2,3). The auxiliary hvac module needs its vehicle securing nuts removed before safety stands can be taken off the vehicle and the platform should be lowered. Afterwards start by removing both the real time damping (RTD) module with its electrical connectors and the right rear quarter trim panel. Then remove the fastener that attaches the upper auxiliary air duct while sliding the duct into place near the headliner. Take out the rear auxiliary hvac module by removing its fasteners and position it on a work surface. Start by removing the air temperature actuator and Heater Core cover as well as Heater Core and lower module cover from the module before removing the Evaporator core from the lower module cover. Put the Evaporator core inside the lower module cover and reassemble everything by inserting the lower module cover, Heater Core, Heater Core cover and air temperature actuator onto the module. Install the auxiliary hvac module assembly back into the vehicle while fastening it using two bolts which should be inside the vehicle body. To finish the installation process, connect the upper auxiliary air duct to the air distributor duct through fastener attachment. After that, reinstall the rtd module and right rear quarter trim panel together with electrical connector reattachment. Reposition the vehicle at its height before installing auxiliary hvac module nuts while twisting them to achieve 9 n.m (80 lb in). Broaden and join (2,3) air conditioning lines with nut to the auxiliary hvac module while using a torque of 16 n.m before linking heater lines to the module. Lower the vehicle and follow the system with correct fluid and then complete a refrigerant recharging process.