How to replace the Heater Core on Buick Rainier?

The first step for heater core replacement requires removal of the HVAC module assembly followed by extracting the heater core access cover screws and the access cover. After removing the heater core you must pull it out from the HVAC module assembly. Insert your heater core into the HVAC module assembly after which attach the access cover then fasten the access cover screws until they reach 1.9 N.m (17 lb in). You must reinstall the HVAC module assembly as the last step.

OEM Buick Rainier Heater Core

HVAC Heater Core

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Buick Rainier Heater Core
Part Number: 52498633
Product Specifications
- Other Name: Core, Heater; HVAC Heater Core; Core, Heater Core
- 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 Heater Core

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Buick Rainier Heater Core Parts Questions & Experts Answers

Heater Core
52498633
Q: How to replace the Heater Core on Buick Rainier?
A: The first step for heater core replacement requires removal of the HVAC module assembly followed by extracting the heater core access cover screws and the access cover. After removing the heater core you must pull it out from the HVAC module assembly. Insert your heater core into the HVAC module assembly after which attach the access cover then fasten the access cover screws until they reach 1.9 N.m (17 lb in). You must reinstall the HVAC module assembly as the last step.

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