Universal Air HT399294C HVAC Heater Core - Rear

Rear Heater Core for Select GM SUVs

Universal Air HT399294C is a rear HVAC heater core built for specific Cadillac, Chevrolet, and GMC applications. It is listed for rear-position use and is identified as an aluminum heater core for vehicles with a custom floor console where noted.

Key Features

• Rear HVAC heater core for select GM full-size SUVs
• Aluminum construction
• Direct fitment for listed rear applications
• Application-specific coverage for models with custom floor console where noted
• Part number HT399294C for ordering and verification

Fitment Details

• Fits 2006 Cadillac Escalade, rear, with Custom Floor Console; Heater Core Aluminum
• Fits 2003-2004 Cadillac Escalade, rear, with Custom Floor Console; Heater Core Aluminum
• Fits 2005 Cadillac Escalade ESV, rear, with Custom Floor Console; Heater Core Aluminum
• Fits 2003 Cadillac Escalade ESV, rear, with Custom Floor Console; Heater Core Aluminum
• Fits 2003 Cadillac Escalade EXT, rear, with Custom Floor Console; Heater Core Aluminum
• Fits 2004 Chevrolet Suburban 2500, rear, Heater Core Aluminum
• Fits 2002 Chevrolet Suburban 1500, rear, Heater Core Aluminum
• Fits 2006 GMC Yukon XL 2500, rear, Heater Core Aluminum
• Fits 2001-2002 GMC Yukon XL 2500, rear, Heater Core Aluminum
• Fits 2000-2001 GMC Yukon XL 1500, rear, Heater Core Aluminum

What It Helps Address

• Weak or uneven rear cabin heat
• Cool air from the rear HVAC system when heat is selected
• Leaking heater core symptoms in the rear climate circuit
• Restricted coolant flow through the rear heater core
• Loss of rear passenger comfort in cold weather

Installation Notes

Verify rear HVAC configuration, model year, and console setup before ordering. Confirm the part number HT399294C against the vehicle’s rear heater core location and existing unit before installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Universal Air HT399294C is cataloged as a heater core aluminum replacement for the listed rear applications. Use the vehicle fitment details and part number to confirm correct selection for Cadillac Escalade, Chevrolet Suburban, and GMC Yukon XL rear HVAC service.