Spectra Premium HVAC Heater Core P/N:93057
Keep the rear cabin comfortable with the Spectra Premium HVAC Heater Core 93057, a rear heater core that installs as a direct-fit replacement for the listed applications, including the 2000-2006 Chevrolet Tahoe, 2000-2006 Chevrolet Suburban 1500, 2000-2006 GMC Yukon, 2002-2006 Cadillac Escalade, and more — see the Buyer's Guide tab for the full list. As the rear heat exchanger, it circulates hot engine coolant through its core while the rear HVAC blower pushes cabin air across it to warm the rear seating area.
- Rear position: serves the rear climate system, not the front dash unit.
- Coolant-to-air heat exchanger: engine coolant flows through the core so the blower can transfer that heat to the rear cabin air.
- Direct-fit replacement: designed to install on the listed applications.
Signs the original rear heater core may need replacing include weak or no rear heat, a sweet coolant odor or damp/foggy rear glass, coolant residue on the rear floor, or unexplained coolant loss. If a leaking or clogged rear heater core is the cause, this replaces it; diagnose the cause before ordering.
Interchange: 9010379 · 8404 · 399294 · 52478848 · HTR010102 · 6603614 · 98057 · 2759294 · 90057 · 1811737 · 96049 · HT399294 · Manufacturer part number 93057.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What is the Spectra Premium 93057?
It is a rear HVAC heater core — a coolant-to-air heat exchanger that hot engine coolant flows through so the rear blower can warm the rear cabin air on the listed applications.
Is this a front or rear heater core?
It is cataloged as the rear heater core, serving the rear climate/heating system rather than the front dash unit.
Which vehicles does it fit?
It fits applications such as the 2000-2006 Chevrolet Tahoe, Suburban 1500 and 2500, GMC Yukon and Yukon XL 1500/2500, plus 2002-2006 Cadillac Escalade and Escalade EXT. See the Buyer's Guide tab for the full list.
What are the signs a rear heater core needs replacing?
Weak or no rear heat, a sweet coolant smell, damp or foggy rear glass, coolant on the rear floor, or unexplained coolant loss. Diagnose the cause before replacing.
What numbers does this part interchange with?
9010379, 8404, 399294, 52478848, HTR010102, 6603614, 98057, 2759294, 90057, 1811737, 96049 and HT399294. Its own manufacturer part number is 93057.
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