Universal Air
Heater Core Aluminum

Universal Air HT400006C HVAC Heater Core - Front

Brand Universal Air HT400006C
Position Front
Product line Heater Core Aluminum
Fits Chevrolet, Buick, Cadillac, and GMC · 47 vehicles

Aluminum construction. Lightweight material helps promote efficient heat transfer.

Heater core. Delivers warm air through the HVAC system.

$53.34Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $53.34
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Heater Core Aluminum for Select GM Vehicles

Universal Air HT400006C is an aluminum HVAC heater core for select Chevrolet, Buick, Cadillac, and GMC applications. It is listed for front or N/A positions depending on the vehicle and configuration, with fitment covering 2016-2021 models.

Key Features

  • Aluminum heater core construction
  • Direct-fit HVAC heater core application
  • Fits select front and N/A position installations
  • Application-specific coverage for 2nd design and non-tri-zone systems where noted
  • Part number HT400006C for ordering and catalog lookup

Detailed Description

Universal Air Heater Core Aluminum, part number HT400006C, is cataloged for HVAC systems in select Chevrolet Blazer, Traverse, Cruze, Volt, Buick Enclave, Cascada, Cadillac XT5, XT6, and GMC Acadia models. This heater core is specified for vehicles such as the 2018-2020 Chevrolet Traverse front main unit HVAC heater core application, the 2018-2020 GMC Acadia front application, and the 2018-2020 Buick Enclave front application. It also covers select Chevrolet Cruze, Chevrolet Volt, and Buick Cascada configurations with 2nd design or without tri-zone notes where listed.

Heater core aluminum construction supports heat transfer within the HVAC system and is used to restore cabin heat performance when the original core is restricted, leaking, or no longer functioning correctly. HT400006C is a fitment-specific replacement, so vehicle configuration and notes should be matched carefully before installation.

What This Part Helps Address

  • Weak or inconsistent cabin heat
  • Coolant odor inside the vehicle
  • Fogging from an HVAC heater core leak
  • Loss of heat output from a restricted core
  • HVAC performance issues tied to a damaged heater core

Installation Notes and Tips

Verify the year, make, model, position, and notes before ordering. Fitment includes front and N/A applications, plus specific notes such as 2nd design, without tri-zone, and vehicles equipped with a 2nd design A/C receiver drier. On vehicles like Chevrolet Blazer, Chevrolet Traverse, Buick Enclave, Cadillac XT5, Cadillac XT6, and GMC Acadia, confirm the exact HVAC configuration to ensure the correct match. Part number HT400006C should be cross-checked against the original unit before service.

Quality Assurance

Universal Air catalogs this heater core as a dedicated HVAC replacement component for the listed applications. The part number HT400006C is provided for accurate identification and fitment verification.

This part fits 47 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2021ChevroletBlazerPremier3.6LV6N/AHeater Core Aluminum
2021ChevroletBlazerLT3.6LV6N/AHeater Core Aluminum
2021ChevroletBlazerRS3.6LV6N/AHeater Core Aluminum
2021ChevroletBlazerLT2.0LL4N/AHeater Core Aluminum
2021ChevroletBlazerTrue North2.0LL4N/AHeater Core Aluminum
2021ChevroletBlazerTrue North3.6LV6N/AHeater Core Aluminum
2021ChevroletBlazerL2.5LL4N/AHeater Core Aluminum
2021ChevroletBlazerLT2.5LL4N/AHeater Core Aluminum
2021ChevroletTraverseFrontHeater Core Aluminum
2020BuickEnclaveFrontHeater Core Aluminum
2020CadillacXT5N/AHeater Core Aluminum
2020CadillacXT6FrontHeater Core Aluminum
2020ChevroletBlazerN/AHeater Core Aluminum
2020ChevroletTraverseFrontMain Unit HVAC Heater Core; Heater Core Aluminum
2020GMCAcadiaFrontHeater Core Aluminum
2019BuickCascadaN/AFitment: Compatible with vehicles equipped with 2nd design A/C receiver drier.; Heater Core Aluminum
2019BuickEnclaveFrontHeater Core Aluminum
2019CadillacXT5FrontHeater Core Aluminum
2019ChevroletBlazerN/AHeater Core Aluminum
2019ChevroletCruzeFrontHeater Core Aluminum
2019ChevroletTraverseFrontMain Unit HVAC Heater Core; Heater Core Aluminum
2019GMCAcadiaFrontHeater Core Aluminum
2018BuickCascadaN/AHeater Core Aluminum
2018BuickEnclaveFrontHeater Core Aluminum
2018CadillacXT5FrontHeater Core Aluminum
2018ChevroletCruzeN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2018ChevroletTraverseFrontMain Unit HVAC Heater Core; Heater Core Aluminum
2018ChevroletVoltN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2018GMCAcadiaFrontHeater Core Aluminum
2017BuickCascadaN/AFitment: Compatible with vehicles equipped with 2nd design A/C receiver drier.; Heater Core Aluminum
2017CadillacXT5Front2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletCruzeLS1.4LL4GASN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletCruzeL1.4LL4GASN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletCruzePremier1.4LL4GASN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletCruzeLT1.4LL4GASN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletCruzeLT1.6LL4DIESELN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletCruzeDiesel1.6LL4DIESELN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017ChevroletVoltN/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2017GMCAcadiaFront2nd Design; Without Tri-Zone; Heater Core Aluminum
2016BuickCascadaN/AFitment: Compatible with vehicles equipped with 2nd design A/C receiver drier.; Heater Core Aluminum
2016ChevroletCruzeLS1.8LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2016ChevroletCruzeL1.4LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2016ChevroletCruzePremier1.4LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2016ChevroletCruzeLT1.8LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2016ChevroletCruzeLT1.4LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2016ChevroletCruzeLTZ1.4LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum
2016ChevroletCruzeLS1.4LL4N/A2nd Design; Without Tri-Zone; Heater Core Aluminum