How to replace the Heater Core (Delphi) on GMC Sierra 1500?

The Heater Core (Delphi) substitution process starts by uninstalling the HVAC module assembly while detaching the screws on the heater core cover. Proceed to detach the heater core cover from the HVAC module assembly after removing the heater core cowl gasket from the heater core . Remove the heater core by extracting the component from the HVAC module assembly. Begin the install process by placing the heater core inside the HVAC module assembly and then apply the heater core cowl gasket onto the heater core surface. Secure the heater core cover to the HVAC module assembly and fasten its screws into the heater core cover while tightening them to 2 N.m (18 lb in). The installation of the HVAC module assembly should be completed last.

OEM GMC Sierra 1500 Heater Core

HVAC Heater Core

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6 Heater Cores found

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GMC Sierra 1500 Heater Core Part Number: 89018297
$158.42 MSRP: $325.56
You Save: $167.14 (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:
- 1999-2013 GMC Sierra 1500 | Base, C3, Denali, HT, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Heater Core Part Number: 25906908
$137.34 MSRP: $282.24
You Save: $144.90 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core, Heater Core
- Replaces: 15887363
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2013 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Heater Core Part Number: 85108010
$35.78 MSRP: $110.34
You Save: $74.56 (68%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Heater Assembly-.; Heater, Auxiliary Heater
- Replaced by: 87846949
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, AT4X, Base, Denali, Denali Ultimate, Elevation, Pro, SLE, SLT | 4 Cyl 2.7 L GAS, 6 Cyl 3.0 L DIESEL, 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Heater Core Part Number: 84418888
$100.77 MSRP: $207.07
You Save: $106.30 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater Assembly-.; Heater, Auxiliary Heater
- Replaces: 22933441, 23281454
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 GMC Sierra 1500 | AT4, Base, Denali, Elevation, SLE, SLT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Blower Motor Part Number: 84418887
$138.88 MSRP: $285.38
You Save: $146.50 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater Assembly-.; Heater Core; Heater, Auxiliary Heater; Heater, Heater Core
- Replaces: 22808761, 23281453
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2015 GMC Sierra 1500 | Base, Denali, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Heater Core Part Number: 19258989
$154.99 MSRP: $278.00
You Save: $123.01 (45%)
Product Specifications
- Other Name: Core, Heater Core
- Replaces: 88986627
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2007 GMC Sierra 1500 | Base, Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS

GMC Sierra 1500 Heater Core

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GMC Sierra 1500 Heater Core Parts and Q&A

Heater Core
19258989
Q: How to replace the Heater Core (Delphi) on GMC Sierra 1500?
A:
The Heater Core (Delphi) substitution process starts by uninstalling the HVAC module assembly while detaching the screws on the heater core cover. Proceed to detach the heater core cover from the HVAC module assembly after removing the heater core cowl gasket from the heater core . Remove the heater core by extracting the component from the HVAC module assembly. Begin the install process by placing the heater core inside the HVAC module assembly and then apply the heater core cowl gasket onto the heater core surface. Secure the heater core cover to the HVAC module assembly and fasten its screws into the heater core cover while tightening them to 2 N.m (18 lb in). The installation of the HVAC module assembly should be completed last.