How to replace the heater core in a Delphi system on Chevrolet Avalanche 1500?

The Delphi heater core replacement process should begin with HVAC module assembly extraction. First detach the screws that hold the heater core cover before removing the cover away from the HVAC module assembly. You should detach the heater core cowl gasket from the heater core and then extract the heater core from the HVAC module assembly. The procedure starts with heater core placement into the HVAC module assembly before applying the heater core cowl gasket to the heater core. Fasten the heater core cover to the HVAC module assembly while using the screws that require a torque of 2 Nm (18 lb in). Install the HVAC module assembly as the last step of the replacement.

OEM Chevrolet Avalanche 1500 Heater Core

HVAC Heater Core

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Chevrolet Avalanche 1500 Heater Core
Part Number: 89018297
$155.32 MSRP: $319.18
You Save: $163.86 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core, Heater Core; HVAC Heater Core
- Replaces: 52473326, 52473322
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Avalanche 1500 | Base, LS, LT, North Face, On Road Edition, WBH, Z66, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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Chevrolet Avalanche 1500 Heater Core
Part Number: 19258989
$135.28 MSRP: $278.00
You Save: $142.72 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Core, Heater Core
- Replaces: 88986627
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 Chevrolet Avalanche 1500 | Base, LS, LT, North Face, On Road Edition, WBH, Z66, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS

Chevrolet Avalanche 1500 Heater Core

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Chevrolet Avalanche 1500 Heater Core Parts Questions & Experts Answers

Heater Core
19258989
Q: How to replace the heater core in a Delphi system on Chevrolet Avalanche 1500?
A: The Delphi heater core replacement process should begin with HVAC module assembly extraction. First detach the screws that hold the heater core cover before removing the cover away from the HVAC module assembly. You should detach the heater core cowl gasket from the heater core and then extract the heater core from the HVAC module assembly. The procedure starts with heater core placement into the HVAC module assembly before applying the heater core cowl gasket to the heater core. Fasten the heater core cover to the HVAC module assembly while using the screws that require a torque of 2 Nm (18 lb in). Install the HVAC module assembly as the last step of the replacement.

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