Four Seasons HVAC Heater Core P/N:90003
Move warm coolant through the cabin's heat exchanger with the FOUR SEASONS heater core, part number 98607. This aluminum heater core fits many vehicles as a direct-fit replacement, 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. Inside the HVAC system, the core circulates hot engine coolant through its tubes and fins so the blower can push heated air into the passenger compartment. If a leaking or clogged original core is the cause of weak cabin heat, fogged glass, or a sweet coolant smell inside, this replaces it.
Backed by over 50 years of mobile A/C experience from Four Seasons. Additional GMC, Chevrolet and Oldsmobile applications are listed in the "Vehicles it fits" section.
What does the HVAC heater core do?
It is a small heat exchanger that routes hot engine coolant through its tubes and fins; the blower forces cabin air across it to warm the passenger compartment.
Is this the right Jimmy heater core for a 1983-1994 GMC Jimmy?
Yes. It is listed for the 1983-1994 GMC Jimmy, as well as the 1991-1993 GMC Sonoma and 1992-1993 GMC Typhoon; see the "Vehicles it fits" section for other applications.
What are the signs a heater core may need replacing?
Weak or no cabin heat, fogged-up windows, a sweet coolant odor inside, or coolant residue on the floor. Diagnose the cause before replacing, since other parts can produce these signs.
What is the 98607 heater core made of?
It is an aluminum heater core.
Is coolant or mounting hardware included?
This listing is for the heater core itself. Consult the vehicle service information for coolant refill and the correct install procedure and fasteners.
No reviews yet — be the first to review this product.
Write a Review
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.