How to replace the evaporator core in the HVAC module assembly on Buick Rainier?

Maintenance professionals should remove the HVAC module assembly as their starting point for evaporator core replacement. Start by unscrewing the HVAC module assembly to detach its halves while keeping in mind that hidden screws might be under foam insulation. The HVAC module assembly requires separation before eliminating the evaporator core then removing the sealing element which connects the halves. First step for installation requires the seal to be positioned between the HVAC module assembly halves. Refrigerant oil needs to be added to the new evaporator core following the refrigerant system capacities. Reinstall the evaporator core to HVAC module assembly before reassembling the components with proper positioning of the two case sections seal. Complete assembly of the HVAC module requires joining its halves first by screw installation followed by torque adjustment to 1.9 N.m (17 lb in) and finally attaching the HVAC module assembly.

OEM Buick Rainier Evaporator

A/C Evaporator Core

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Buick Rainier Evaporator Core Part Number: 89019026
Product Specifications
- Other Name: Evaporator Kit, Air Conditioner Evaporator; A/C Evaporator Core Repair Kit; A/C Evaporator Core; A/C Evaporator; Evaporator Kit, A/C Evaporator; Evaporator
- Replaces: 52498635
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS

Buick Rainier Evaporator

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Buick Rainier Evaporator is a very essential part of the A/C system of Buick Rainier cars in terms of reliability and performance. Thanks to this evaporator being able to cool the cabin by removing heat and turning from the liquid refrigerant into vapor form, the driver and the occupants in the car will enjoy a cozy ride. Situated close to the dashboard of the Buick Rainier is the evaporation unit which has aluminum tubes with fins to boost heat exchange and to function as a dehumidifying unit to get rid of moisture from the car's ambiance. Besides, this makes functioning not only more comfortable but also adds to the safety of a car by avoiding fogging on windows. This evaporator can fit a wide range of Buick Rainier models, and is built to last through thermal stress and the collection of debris, thus ensuring that your A/C system remains in top running condition for quite a long time. The model to be discussed in detail is the 2004-2007 Buick Rainier that offers a lot of power and a rather spacious cabin along with the efficient working of the vehicle's evaporator. Some key qualities of the Buick Rainier Evaporator are; these are performance features such as its ability to maintain the desired temperature in the cabin and the function of improving the efficiency of the automobile. In the present automobile industry, the Buick Rainier Evaporator demonstrates the quality construction and the use of original equipment manufacturer parts to guarantee that Rainier shall continue to be a favorite for clients in their search for a car that is both efficient and comfortable, as well as safe.

Buick Rainier Evaporator Parts and Q&A

Evaporator Core
89019026
Q: How to replace the evaporator core in the HVAC module assembly on Buick Rainier?
A:
Maintenance professionals should remove the HVAC module assembly as their starting point for evaporator core replacement. Start by unscrewing the HVAC module assembly to detach its halves while keeping in mind that hidden screws might be under foam insulation. The HVAC module assembly requires separation before eliminating the evaporator core then removing the sealing element which connects the halves. First step for installation requires the seal to be positioned between the HVAC module assembly halves. Refrigerant oil needs to be added to the new evaporator core following the refrigerant system capacities. Reinstall the evaporator core to HVAC module assembly before reassembling the components with proper positioning of the two case sections seal. Complete assembly of the HVAC module requires joining its halves first by screw installation followed by torque adjustment to 1.9 N.m (17 lb in) and finally attaching the HVAC module assembly.