One Stop Solutions 99079 HVAC Heater Core - Front

Reliable HVAC Heater Core for Select GM Vehicles

The One Stop Solutions HVAC Heater Core part number 99079 is designed to restore efficient heating performance in your Cadillac, Chevrolet, GMC, or Hummer vehicle. Engineered to meet OEM specifications, this heater core ensures proper cabin temperature control for a comfortable driving experience.

• Compatible with multiple GM models including Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Hummer H2
• Durable construction for long-lasting heat exchange performance
• Direct replacement part number 99079 for easy identification and fitment
• Designed to maintain optimal coolant flow and prevent leaks
• Precision engineered to match factory HVAC system requirements

Product Details and Compatibility

This HVAC heater core from One Stop Solutions is specifically designed for use in a wide range of General Motors vehicles. It fits popular models such as the Chevrolet Avalanche 1500 and 2500, GMC Sierra 1500 Classic and HD variants, Cadillac Escalade series including ESV and EXT, as well as the Hummer H2. The part number 99079 corresponds to this exact heater core, ensuring compatibility and reliable performance. The heater core plays a critical role in the vehicle’s heating system by transferring heat from the engine coolant to the cabin air, providing warmth during cold weather conditions.

Common Applications and Problem Resolution

• Restores heating functionality in Cadillac Escalade and Chevrolet Silverado 1500 vehicles
• Eliminates coolant leaks that can cause engine overheating
• Resolves insufficient cabin heat issues in GMC Sierra 2500 HD and Hummer H2
• Prevents HVAC system blockages and improves airflow
• Addresses heater core corrosion and internal clogging problems

Installation Notes and Tips

Installation of the One Stop Solutions heater core 99079 requires removal of the dashboard and HVAC housing in most compatible vehicles. It is recommended to drain the cooling system before removal to avoid coolant spillage. Ensure all connections and seals are properly tightened to prevent leaks. Professional installation is advised for those unfamiliar with HVAC system components to maintain system integrity and performance.

Quality Assurance and Warranty

One Stop Solutions manufactures this heater core to meet or exceed OEM standards, providing reliable operation and durability. While specific warranty details are not provided, the product is backed by the brand’s commitment to quality and fitment accuracy for Cadillac, Chevrolet, GMC, and Hummer vehicles. Using the correct part number 99079 helps ensure compatibility and reduces the risk of premature failure.