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GM 19258989
Heater Core

2003-2007 GM

Customer Questions & Expert Answers (16)
GM 19258989 Heater Core
GM 19258989 Heater Core
  • Part Description
    Core, Heater Core
  • Replaces
    88986627
  • Manufacturer
    General Motors
Make sure this part fits
$148.98 MSRP: $278.00
You Save: $129.02 (47%)
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  • Vehicle Fitment

    Year Make Model Trim Engine
    2003-2006 Cadillac EscaladeBase8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2003-2006 Cadillac Escalade ESVBase8 Cyl 6.0 L GAS
    2003-2006 Cadillac Escalade EXTBase8 Cyl 6.0 L GAS
    2003-2006 Chevrolet Avalanche 1500Base, LS, LT, North Face, On Road Edition, WBH, Z66, Z718 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2003-2006 Chevrolet Avalanche 2500Base, LS, LT8 Cyl 8.1 L GAS
    2003-2007 Chevrolet Silverado 1500Base, Hybrid, LS, LT, LTZ, SS, WT, Z71 Off-Road6 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
    2007 Chevrolet Silverado 1500 ClassicHybrid, LS, LT, SS, WT6 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
    2005-2006, 2003 Chevrolet Silverado 1500 HDBase, LS, LT8 Cyl 6.0 L GAS
    2007 Chevrolet Silverado 1500 HD ClassicLT8 Cyl 6.0 L GAS
    2003-2004 Chevrolet Silverado 2500Base, LS, LT, WT8 Cyl 6.0 L GAS
    View More
    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Is this 19258989 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 19258989 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the first step to replace the heater core in a Delphi system for the 2003 Cadillac Escalade? Posted by Customer
    A:
    Remove the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What is the final step in the installation process for the 2005 Cadillac Escalade EXT? Posted by Customer
    A:
    Install the screws to the heater core cover and tighten them to 2 Nm (18 lb in), then reinstall the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What is the final step in the process for the 2003 Chevrolet Avalanche 1500? Posted by Customer
    A:
    Reinstall the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What is the final step after installing the heater core cover for the 2006 Chevrolet Silverado 1500? Posted by Customer
    A:
    Reinstall the heater/vent module.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What is the final step in the process for the 2007 Chevrolet Silverado 1500 Classic? Posted by Customer
    A:
    Reinstall the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What is the first step in the installation process for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Place the heater core back into the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    How should the heater core cover screws be secured for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Tighten them to 1.6 N.m (14 lb in).
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What should be done after removing the heater/vent module for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Take out the heater core cover screws and the heater core cover.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What should be reattached after securing the heater core for the 2004 Chevrolet Suburban 1500? Posted by Customer
    A:
    Reattach the auxiliary HVAC module lower cover.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What should be done after placing the new heater core for the 2004 Chevrolet Tahoe? Posted by Customer
    A:
    Reattach the heater core cover and the air temperature actuator.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What should be done after removing the HVAC module assembly for the 2004 GMC Sierra 1500? Posted by Customer
    A:
    Take out the screws from the heater core cover and then remove the heater core cover from the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    How do you install the new heater core for the 2005 GMC Yukon? Posted by Customer
    A:
    Begin by placing the heater core back into the HVAC module assembly, followed by installing the heater core cowl gasket onto the heater core.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    How do you begin the installation of the new heater core for the 2007 GMC Sierra 1500 Classic? Posted by Customer
    A:
    Place the heater core back into the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What is the first step in the installation process for the 2006 GMC Sierra 3500? Posted by Customer
    A:
    Place the heater core back into the HVAC module assembly.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    Q:
    What should be done after removing the auxiliary HVAC module for the 2004 GMC Yukon XL 2500? Posted by Customer
    A:
    Detach the air temperature actuator from the module.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Heater Core
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Heater Core 19258989 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 19258989 Heater Core is available in the market under the name GM Heater Core. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 19258989 Heater Core fits certain Chevrolet Tahoe, Silverado 1500, Silverado 2500 HD models, as well as GMC Sierra 1500, Yukon, Sierra 2500 HD. Additionally, it is compatible with Cadillac Escalade, Escalade ESV, Escalade EXT and Hummer H2 models.
The original GM component designated by manufacturer part number 19258989 maintains top performance when functioning as the Core, Heater Core unit. The component 19258989 is constructed from durable material and its dimensions span 14.1 x 13.8 x 7.1 inches while weighing 2.90 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. The part 19258989 has available replacement options 88986627. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
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