Universal Air HT400128C HVAC Heater Core - Front

Heater Core for Select GM Compact SUVs

Universal Air HT400128C is an HVAC heater core for front-mounted cabin heating applications. It is listed for the 2020-2021 Buick Encore GX and the 2021 Chevrolet Trailblazer, making it a direct-fit option for those vehicles.

Key Features

• HVAC heater core for front installation
• Fits 2020-2021 Buick Encore GX, front
• Fits 2021 Chevrolet Trailblazer, front
• Universal Air part number HT400128C for application matching
• Heater Core line identification for HVAC service work

Product Details

This heater core is part of Universal Air’s Heater Core line and is cataloged as HT400128C. It is used in the main HVAC unit to transfer heat into the passenger compartment, and it is listed for the Buick Encore GX and Chevrolet Trailblazer in front-position applications. If you are searching for a 2020-2021 Buick Encore GX heater core or a 2021 Chevrolet Trailblazer heater core, HT400128C is the referenced part number.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Replacement Reasons

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Fogging or film on the windshield from HVAC leakage
• Restricted heat output from a clogged heater core
• Coolant seepage at the HVAC core area

Installation Notes

Verify the vehicle year, make, model, and front HVAC application before ordering. Compare the original heater core to HT400128C for inlet and outlet layout, case fit, and connection style before installation. After replacement, refill and bleed the cooling system according to factory service procedures and check the HVAC system for proper heat output and leaks.

Quality Assurance

Universal Air Heater Core HT400128C is cataloged for specific GM applications to support accurate parts selection and service fitment.