OEM 2008 Chevrolet Trailblazer Evaporator

2008 Chevrolet Trailblazer Evaporator Parts and Q&A

• Q: How to Replace an Evaporator Core in an HVAC Module Assembly on 2008 Chevrolet Trailblazer?

  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.