Four Seasons HVAC Heater Core P/N:90050

Bring cabin heat back to your truck or SUV with the Four Seasons Heater Core 90050, a direct-fit FOUR SEASONS heater core that circulates hot engine coolant so the blower can push warm air into the passenger compartment. It mounts in the front heater case and drops in for the 1999-2013 Chevrolet Silverado 1500, 1999-2013 GMC Sierra 1500, 2000-2014 Chevrolet Tahoe, 2000-2014 Chevrolet Suburban 1500, 2000-2014 GMC Yukon, 2002-2014 Cadillac Escalade and 2008-2009 Hummer H2 — see the Buyer's Guide tab for the full list of 51 applications.

• Aluminum core: heavy-duty construction for durability.
• O.E. fit, form and function: quality engineering to match the original.
• Independently tested for proven quality and performance.
• Backed by Four Seasons: over 50 years of mobile A/C experience.

A heater core works like a small radiator: coolant from the engine flows through the aluminum tubes while cabin air passes over the fins, transferring heat into the interior. Signs the original may need replacing include weak or no heat, a sweet coolant odor inside, fogged glass, or coolant loss with no external leak. If a failed heater core is the cause, this front unit for the listed applications replaces it.