OEM Chevrolet Venture Evaporator

Chevrolet Venture Evaporator Parts and Q&A

• Evaporator Core
  10323437
  Q: How to replace the air conditioning evaporator core on Chevrolet Venture?

  A:

  First disconnect the Evaporator temperature sensor connector from the air inlet housing before starting replacement of the air conditioning Evaporator core. First detach the air inlet housing screws then remove the airflow component from its position on the hvac module. After securing the bracket screws on the right side hvac module assembly remove the bracket itself including the upper screw which rests underneath the bracket. Start by removing the upper hvac module retaining screw then proceed with taking away the sound barrier seal and heater outlet duct screws before extracting the duct. Follow this order to remove screws from the cover of the Heater Core and then take out the Heater Core followed by the pipe retaining screw. The lower hvac module assembly retaining screw resides beneath the Heater Core so you need to remove it together with all lower retaining screws to separate the upper and lower hvac module halves. Remove the upper hvac module case half Evaporator core while you take off both the Evaporator temperature sensor and txv mounting screws to free the txv from the core before discarding its sealing washers. Install the specified amount of pag oil directly to the new Evaporator core before attaching it to the Evaporator line using correct fasteners at right locations while tightening the screws to 3.2 nm (28 lb in). Mount the Evaporator temperature sensor at a distance of 3.5 centimeters (1.4 inches) from the side while the bottom corner measures 5.0 centimeters (2.0 inches) and direct the wires toward the opening in the upper hvac module case to prevent pinching. Install the upper hvac module case half by inserting the Evaporator core then position the components before tightening the lower hvac module assembly retaining screws to 0.9 nm (8 lb in). This installation process must end with securing the lower retaining screw at the same torque value. The Heater Core requires 0.9 nm (8 lb in) torque for its retaining screw installation alongside the Heater Core cover and screws with the same torque of 0.9 nm (8 lb in). After screwing the heater outlet duct to 0.9 nm (8 lb in), you should install the hvac module assembly to dash panel sound barrier seal and secure the upper retaining screw to 0.9 nm (8 lb in). The hvac module assembly retrieval process ends with the air inlet housing attachment to the module before air inlet retainer screw installation to 0.9 nm (8 lb in) and placement of the Evaporator temperature sensor connector to the inlet housing followed by module assembly installation.
• Evaporator Core
  10318580
  Q: How to service and repair the auxiliary air conditioning evaporator on Chevrolet Venture?

  A:

  The first step to service or repair the auxiliary air conditioning Evaporator requires using the tools including a halogen leak detector (J 39400-A). Start the service by separating the auxiliary hvac module assembly followed by the removal of screws securing the auxiliary txv line clamp and finally separating the clamp from its position. Take off the sealing washers from the a/c lines connected to the auxiliary txv and cap or tape the open lines to stop contamination before removal. Remove the bolts which lock the auxiliary txv to the Evaporator core before detaching the txv device along with any sealing washers. Detach first the screws and the actuator of the auxiliary temperature actuator from the hvac module before removing the screws from the auxiliary blower motor housing. You must first separate the auxiliary hvac module case halves after unscrewing its fasteners to reach the auxiliary Evaporator core. The required amount of pag oil must be added to the new Evaporator core during its installation. Reassemble the two parts of the lower hvac module case by inserting the new auxiliary Evaporator core and tightening all fasteners to their correct positions. Screw the auxiliary hvac module case at 1.6 nm torque before attaching the auxiliary blower motor housing and its screws that should be tightened to 1.6 nm as well. You should install the auxiliary temperature actuator together with its screws before final tightening at 1.6 nm (14 lb in). The auxiliary Evaporator core installation requires new sealing washers followed by removal of a/c line caps or tape. Install the auxiliary txv to the Evaporator core while tightening its mounting bolts to 3.5 nm (31 lb in). The new sealing washers should be installed on the auxiliary txv line block fitting then fasten it to the Evaporator core using a retaining bolt tightened to 11 nm (97 lb in). Reinstall the auxiliary hvac module assembly after you attach the clamp to the assembly and tighten its screws to 1.6 nm (14 lb in). Perform a leak test on each fitting through the halogen leak detector (J 39400-A).