How to replace the auxiliary evaporator core on GMC Envoy?

The first step to change the auxiliary Evaporator core requires using the halogen leak detector (J 39400-A) to check for leaks in its component fittings. Start by taking off the Heater Core-auxiliary and afterward the inverted torx studs from the Evaporator block-auxiliary. Start the auxiliary processor installation process by removing the screws which secure the blower motor control unit followed by taking out its backing plate. Start by removing the screws belonging to the hvac module-auxiliary case sump followed by its removal. The team needs to remove the hvac module-auxiliary along with the Evaporator core-auxiliary while also removing its foam insulator. The installation process requires both the foam insulator transfer to the new Evaporator core-auxiliary along with the placement of thermal expansion valve-auxiliary on the core. Secure the rear hvac module-auxiliary with its replacement Evaporator core-auxiliary using screws which should be tightened to 2 n.m (18 lb in). You should put back the blower motor control processor-auxiliary along with the backing plate to the Evaporator core-auxiliary. The process continues with installation of the Evaporator block-auxiliary and inverted torx studs while torquing them to 2 n.m (18 lb in) before Heater Core-auxiliary placement.

OEM GMC Envoy Evaporator

A/C Evaporator Core

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GMC Envoy 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:
- 2003-2009 GMC Envoy | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
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GMC Envoy Evaporator Core Part Number: 88892977
Product Specifications
- Other Name: A/C Evaporator Core Repair Kit; A/C Evaporator
- Replaced by: 89023466
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 GMC Envoy | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
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GMC Envoy Evaporator Core Part Number: 89023466
Product Specifications
- Other Name: A/C Evaporator Core Repair Kit; A/C Evaporator Core; A/C Evaporator; Evaporator Kit, A/C Evaporator; Evaporator
- Replaces: 88892977, 89023341
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2007 GMC Envoy | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
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GMC Envoy Evaporator Core Part Number: 52495720
Product Specifications
- Other Name: Evaporator Kit, Air Conditioner Evaporator; A/C Evaporator Core Repair Kit; A/C Evaporator; Evaporator Kit, A/C Evaporator
- Replaces: 52487350
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS

GMC Envoy Evaporator

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The Evaporator of GMC Envoy vehicles is one of the major parts of the vehicles A/C system, it is believed to have the function of cooling the vehicles by absorbing heat and converting the refrigerant from the liquid form to the gaseous state. Mounted below the dashboard, the evaporator is comprised of aluminum tubing in a serpentine configuration accompanied by fins that dissipate heat picked up from the inside of the vehicle to the refrigerant. Also, the evaporator plays the role of the dehumidifier to eliminate moisture in the air when it circulation occurs. Often damaged by leakage on the account of aging, thermal stress or clogging, A/C Evaporator is a very important component functioning in maintaining a proper cabin climate.

GMC Envoy Evaporator Parts Questions & Experts Answers

Evaporator Core
89019026
Q: How to replace the auxiliary evaporator core on GMC Envoy?
A:
The first step to change the auxiliary Evaporator core requires using the halogen leak detector (J 39400-A) to check for leaks in its component fittings. Start by taking off the Heater Core-auxiliary and afterward the inverted torx studs from the Evaporator block-auxiliary. Start the auxiliary processor installation process by removing the screws which secure the blower motor control unit followed by taking out its backing plate. Start by removing the screws belonging to the hvac module-auxiliary case sump followed by its removal. The team needs to remove the hvac module-auxiliary along with the Evaporator core-auxiliary while also removing its foam insulator. The installation process requires both the foam insulator transfer to the new Evaporator core-auxiliary along with the placement of thermal expansion valve-auxiliary on the core. Secure the rear hvac module-auxiliary with its replacement Evaporator core-auxiliary using screws which should be tightened to 2 n.m (18 lb in). You should put back the blower motor control processor-auxiliary along with the backing plate to the Evaporator core-auxiliary. The process continues with installation of the Evaporator block-auxiliary and inverted torx studs while torquing them to 2 n.m (18 lb in) before Heater Core-auxiliary placement.