How to replace the Heater Core on 2003 Cadillac Seville?

In order to change the heater core, it is necessary to disconnect heater hoses and remove instrument panel assembly. Unscrew the cover of the heater core along with the fasteners and the heater core together with its seals. To install, attach the new core of the heater, fix all in place, install the panel again, and reconnect the hoses.

OEM 2003 Cadillac Seville Heater Core

HVAC Heater Core

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2003 Cadillac Seville Heater Core Part Number: 52471442
Product Specifications
- Other Name: Core, Heater; Core, Heater Core
- Item Weight: 4.60 Pounds
- Item Dimensions: 20.2 x 16.0 x 8.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 52471442
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Cadillac Seville Submodels:
- SLS, STS | 8 Cyl 4.6 L GAS

2003 Cadillac Seville Heater Core

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2003 Cadillac Seville Heater Core Parts and Q&A

Q: How to replace the Heater Core on 2003 Cadillac Seville?
A: In order to change the heater core, it is necessary to disconnect heater hoses and remove instrument panel assembly. Unscrew the cover of the heater core along with the fasteners and the heater core together with its seals. To install, attach the new core of the heater, fix all in place, install the panel again, and reconnect the hoses.