How to replace the Heater Core on 2005 Buick Terraza?

The replacement process for the heater core begins with draining the cooling system fluids. You should cut off the heater hose clamps from the heater core using Hose Clamp Pliers (J 38185). Secure the heater core inlet and outlet pipes with caps before separating heater hoses from the core to avert coolant leakage into the vehicle compartment. First remove the heater core cover and after that remove the heater core pipe clamp screw before getting rid of the heater core. Begin heater core installation by gripping the new unit with the heater core pipe clamp screw and tighten it to 1.2 N.m (11 lb in). Follow the heater core cover installation by affixing the heater hoses to the heater core before readjusting and fastening the heater hose clamps with Hose Clamp Pliers (J 38185). Perform the final stage by filling coolant into the system.

OEM 2005 Buick Terraza Heater Core

HVAC Heater Core

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2005 Buick Terraza Heater Core
Part Number: 10362445
$101.43 MSRP: $183.58
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Product Specifications
- Other Name: Heater, Heater; Heater, Auxiliary Heater; Heater, Heater Core
- Item Weight: 1.30 Pounds
- Item Dimensions: 8.3 x 8.2 x 18.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 10362445
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2005 Buick Terraza Submodels:
- CX, CXL | 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
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2005 Buick Terraza Heater Core
Part Number: 15925712
Product Specifications
- Other Name: Heater, Heater; HVAC Heater Core; Heater, Auxiliary Heater; Heater, Heater Core
- Replaces: 10364909
- Item Weight: 2.00 Pounds
- Item Dimensions: 18.0 x 13.3 x 9.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15925712
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2005 Buick Terraza Submodels:
- CX, CXL | 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS

2005 Buick Terraza Heater Core

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2005 Buick Terraza Parts Questions & Experts Answers

Q: How to replace the Heater Core on 2005 Buick Terraza?
A: The replacement process for the heater core begins with draining the cooling system fluids. You should cut off the heater hose clamps from the heater core using Hose Clamp Pliers (J 38185). Secure the heater core inlet and outlet pipes with caps before separating heater hoses from the core to avert coolant leakage into the vehicle compartment. First remove the heater core cover and after that remove the heater core pipe clamp screw before getting rid of the heater core. Begin heater core installation by gripping the new unit with the heater core pipe clamp screw and tighten it to 1.2 N.m (11 lb in). Follow the heater core cover installation by affixing the heater hoses to the heater core before readjusting and fastening the heater hose clamps with Hose Clamp Pliers (J 38185). Perform the final stage by filling coolant into the system.

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2006 Buick Terraza Heater Core