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Replacement and OEM Parts for 2003 GMC Sierra 3500 Heater Core

2003 GMC Sierra 3500 Heater Core

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2003 GMC Sierra 3500
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A/C & Heating
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3 Products found

8 Q&A for Heater Core Repair
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  • OEM 2003 GMC Sierra 3500 Heater Core Diagram - 89018297
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 3500 Heater Core

    PartNumber: 89018297
    OEM 2003 GMC Sierra 3500 Heater Core - 89018297
    Product Specifications
    • Notes: 2003-07, W/O Center Console
    • Other Names: Heater Core
    • Item Dimensions: 20.2 x 16.7 x 9.0 inches
    • Item Weight: 4.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 52473326, 52473322
    • Part Description: 2003 GMC Sierra 3500 Heater Core
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $164.70 MSRP: $310.78
    You Save: $146.08 (48%)
  • OEM 2003 GMC Sierra 3500 Heater Core Diagram - 19258989
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 3500 Heater Core

    PartNumber: 19258989
    OEM 2003 GMC Sierra 3500 Heater Core - 19258989
    Product Specifications
    • Notes: 2003-07, W/Center Console
    • Other Names: Heater Core
    • Item Dimensions: 14.4 x 13.9 x 6.9 inches
    • Item Weight: 2.80 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 88986627
    • Part Description: 2003 GMC Sierra 3500 Heater Core
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $147.33 MSRP: $278.00
    You Save: $130.67 (48%)
  • Spectra Premium HVAC Heater Core for 2003 GMC Sierra 3500 - 99374

    Spectra Premium® HVAC Heater Core for 2003 GMC Sierra 3500

    PartNumber: 99374
    Product Specifications
    • Notes: w/RPO Code CJ3/D07 Combination Only (HVAC; Manual Temp Control/Custom Front Floor Console)
    • Depth: 1.625
    • Inlet Size (in): 0.75
    • Internet Product Code (IPC): F39383DE255
    • Item has MSDS (SDS): N
    • Material: Aluminum
    • MFG Brand Name: Spectra Premium
    • MFG Model # (Series): 00671607619270
    • MFG Name: Spectra Premium Industries
    • Outlet Size (in): 0.75
    • Package Contents: 1 x Heater 1 x Installation Sheet
    • Supplier Company Name: Spectra Premium Industries
    • UPC: 671607619270
    • Width: 7.4375
    • Part Description: 2003 GMC Sierra 3500 HVAC Heater Core
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 3500 | All Trims | All Engines

FAQ for Heater Core Repair

Q: How to install the heater core-Visteon?
A:
You can install the heater core (1) to the HVAC module assembly, the heater core cowl gasket (1) to the HVAC module assembly, the screws to the heater core cover, and install the HVAC module assembly.
By Bob
GM Specialist
01/11/2022
Q: How to remove the heater core?
A:
You can remove the HVAC module assembly, the screws from the heater core cover, the heater core cover from the HVAC module assembly, the heater core cowl gasket from the heater core, and the heater core from the HVAC module assembly.
By Bob
GM Specialist
01/11/2022
Q: How to install the heater core?
A:
You can install the heater core to the HVAC module assembly, the heater core cowl gasket to the heater core, the heater core cover to the HVAC module assembly, the screws to the heater core cover, and install the HVAC module assembly.
By Bob
GM Specialist
01/11/2022
Q: What is the installation procedure for the heater core-heat only?
A:
The procedure is to install the heater core, the heater core cover, the heater core cover screws, and the heater/vent module.
By Bob
GM Specialist
01/11/2022
Q: How to remove the heater core-Visteon?
A:
You can remove the HVAC module assembly, the screws from the heater core cover, the heater core cover from the HVAC module assembly, the heater core cowl gasket from the heater core, and the heater core from the HVAC module assembly.
By Bob
GM Specialist
01/11/2022
Q: What is the removal procedure for the heater core (heat only)?
A:
The procedure is to remove the heater/vent module, the heater core cover screws, the heater core cover, and the heater core.
By Bob
GM Specialist
01/11/2022
Q: What is the recommended bolt torque for the fuel rail outlet pipe?
A:
The recommended bolt torque is 2 Nm (18 lb in).
By Bob
GM Specialist
01/11/2022
Q: What is the recommended bolt torque for the heater core-heat only?
A:
The recommended bolt torque is 1.6 N.m (14 lb in).
By Bob
GM Specialist
01/11/2022
See more FAQs (3)

FAQ for Other Repair Info

Q: What is the installation procedure for the ambient air temperature sensor?
A:
The procedure is to install the ambient Air Temperature Sensor, and the park/turn signal and connect the electrical connector.
Q: How to install the blower motor resistor?
A:
You can install the Blower Motor Resistor, and the IP sound insulator and connect the electrical connection.
Q: How to remove the heater outlet hose?
A:
You can drain the cooling system, remove the air intake tube, and the heater and surge tank hose from the mounting clip, disconnect the Heater Hose from the heater core outlet, remove the outlet heater hose from the engine, and the outlet heater hose.