APDI 9010035 HVAC Heater Core

APDI 9010035 Heater Core for GM Applications

The APDI 9010035 heater core is a direct-fit HVAC replacement built for GM vehicles that need reliable cabin heat and stable coolant-to-air transfer. With an aluminum core and aluminum tanks, this heater core is sized for compact HVAC housings and supports consistent heat output in the vehicle’s heating system.

Key Features

• Aluminum construction for the core and tanks
• Core dimensions: 8 in. height, 7-1/2 in. width, 1 in. thickness
• Inlet pipe diameter: 3/4 in.
• Outlet pipe diameter: 5/8 in.
• HVAC heater core for GM heater applications
• APDI part number 9010035

Product Details

APDI Heater Core 9010035 is built as an aluminum HVAC heater core for GM platforms, including Chevrolet Blazer, Chevrolet S10, GMC Jimmy, GMC Sonoma, Oldsmobile Bravada, and Isuzu Hombre. The aluminum core and aluminum tank construction help provide efficient heat transfer while keeping the unit lightweight and corrosion-resistant for the heating circuit. This heater core is sized to match the listed HVAC case dimensions and uses 3/4-inch inlet and 5/8-inch outlet pipe diameters for proper hose connection.

This part cross-references Four Seasons 90014 for the same application.

Vehicle Fitment

• Fits 1998-2005 Chevrolet Blazer, Heater Core
• Fits 1998-2005 Chevrolet LUV, Heater Core
• Fits 1998-2005 GMC Jimmy, Heater Core
• Fits 1998-2004 Chevrolet S10, Heater Core
• Fits 1998-2004 GMC Sonoma, Heater Core
• Fits 2000-2001 Chevrolet C1500, Heater Core
• Fits 1998-2001 Oldsmobile Bravada, Heater Core
• Fits 1998-2000 Isuzu Hombre, Heater Core

Common Problems This Part Can Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Moisture on the windshield from heater core leakage
• Loss of heater performance due to a restricted or leaking core
• HVAC system service on GM trucks and SUVs with the listed fitment

Installation Notes and Tips

Verify the inlet and outlet pipe sizes before installation and compare the core dimensions to the original unit. On vehicles such as the Chevrolet Blazer, GMC Jimmy, and Chevrolet S10, access to the heater core is typically through the HVAC case, so confirm hose routing and sealing surfaces during replacement. Flush the cooling system if contamination or debris is present, and inspect hoses and clamps before reconnecting the heater circuit.

Quality Assurance

APDI manufactures HVAC replacement components for service applications, and this heater core is built with aluminum materials to support dependable heat exchange in the listed GM fitments. Part number 9010035 is specified for the applications shown above.