Four Seasons HVAC Heater Core P/N:90004
Help restore warm air to your cabin with the FOUR SEASONS heater core, part number 98608. This aluminum heat exchanger drops in as a direct-fit replacement for many vehicles, among them the 1983-1994 GMC Jimmy, 1991-1993 GMC Sonoma and 1992-1993 GMC Typhoon — see the "Vehicles it fits" section for the full list and engine details.
A heater core works like a small radiator: hot engine coolant flows through its tubes and fins while the blower pushes cabin air across it to warm the interior and help defrost the glass. If a leaking or clogged core is the cause of weak heat, a sweet coolant smell, foggy windows or damp carpet, this heater core replaces it.
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What does a heater core do?
It is a small radiator-style heat exchanger. Hot engine coolant flows through its tubes and fins while the blower pushes cabin air across it to warm the interior and help defrost the windows.
What are the signs my heater core may need replacing?
Common signs include weak or no cabin heat, a sweet coolant smell inside, foggy windows, or damp carpet on the passenger side. Diagnose the cause before replacing, as these can have other sources.
Will this FOUR SEASONS hvac heater core fit my vehicle?
It is a direct-fit replacement for the listed GMC, Chevrolet and Oldsmobile applications. Check the "Vehicles it fits" section to confirm it matches your exact year, make, model and engine.
Is part 98608 the right 1983-1994 GMC Jimmy heater core?
Yes. This unit is listed for the 1983-1994 GMC Jimmy. Verify your year in the "Vehicles it fits" section before ordering.
What is this heater core made of?
It is an aluminum heater core built with heavy-duty construction for durability.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.